boost StoredXssATM (automatically with tb boost)

.codeqlmanifest.json

@@ -6,7 +6,6 @@
         "*/ql/examples/qlpack.yml",
         "cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/tainted/qlpack.yml",
         "javascript/ql/experimental/adaptivethreatmodeling/lib/qlpack.yml",
-        "javascript/ql/experimental/adaptivethreatmodeling/modelbuilding/qlpack.yml",
         "javascript/ql/experimental/adaptivethreatmodeling/src/qlpack.yml",
         "csharp/ql/campaigns/Solorigate/lib/qlpack.yml",
         "csharp/ql/campaigns/Solorigate/src/qlpack.yml",

.github/workflows/mad_modelDiff.yml

@@ -1,103 +0,0 @@
-name: Models as Data - Diff
-
-on:
-  workflow_dispatch:
-    inputs:
-      projects:
-        description: "The projects to generate models for"
-        required: true
-        default: '["netty/netty"]'
-  pull_request:
-    branches:
-      - main
-    paths:
-      - "java/ql/src/utils/model-generator/**/*.*"
-      - ".github/workflows/mad_modelDiff.yml"
-
-permissions:
-  contents: read
-
-jobs:
-  model-diff:
-    name: Model Difference
-    runs-on: ubuntu-latest
-    if: github.repository == 'github/codeql'
-    strategy:
-      matrix:
-        slug: ${{fromJson(github.event.inputs.projects || '["apache/commons-codec", "apache/commons-io", "apache/commons-beanutils", "apache/commons-logging", "apache/commons-fileupload", "apache/commons-lang", "apache/commons-validator", "apache/commons-csv", "apache/dubbo"]' )}}
-    steps:
-      - name: Clone github/codeql from PR
-        uses: actions/checkout@v2
-        if: github.event.pull_request
-        with:
-          path: codeql-pr
-      - name: Clone github/codeql from main
-        uses: actions/checkout@v2
-        with:
-          path: codeql-main
-          ref: main
-      - uses: ./codeql-main/.github/actions/fetch-codeql
-      - name: Download database
-        env:
-          SLUG: ${{ matrix.slug }}
-        run: |
-          set -x
-          mkdir lib-dbs
-          SHORTNAME=${SLUG//[^a-zA-Z0-9_]/}
-          projectId=`curl -s https://lgtm.com/api/v1.0/projects/g/${SLUG} | jq .id`
-          curl -L "https://lgtm.com/api/v1.0/snapshots/$projectId/java" -o "$SHORTNAME.zip"
-          unzip -q -d "${SHORTNAME}-db" "${SHORTNAME}.zip"
-          mkdir "lib-dbs/$SHORTNAME/"
-          mv "${SHORTNAME}-db/"$(ls -1 "${SHORTNAME}"-db)/* "lib-dbs/${SHORTNAME}/"
-      - name: Generate Models (PR and main)
-        run: |
-          set -x
-          mkdir tmp-models
-          MODELS=`pwd`/tmp-models
-          DATABASES=`pwd`/lib-dbs
-
-          analyzeDatabaseWithCheckout() {
-            QL_VARIANT=$1
-            DATABASE=$2
-            cd codeql-$QL_VARIANT
-            SHORTNAME=`basename $DATABASE`
-            python java/ql/src/utils/model-generator/GenerateFlowModel.py $DATABASE $MODELS/${SHORTNAME}.qll
-            mv $MODELS/${SHORTNAME}.qll $MODELS/${SHORTNAME}Generated_${QL_VARIANT}.qll
-            cd ..
-          }
-
-          for d in $DATABASES/*/ ; do
-            ls -1 "$d"
-
-            analyzeDatabaseWithCheckout "main" $d
-            if [[ "$GITHUB_EVENT_NAME" == "pull_request" ]]
-            then
-              analyzeDatabaseWithCheckout "pr" $d
-            fi
-          done
-      - name: Install diff2html
-        if: github.event.pull_request
-        run: |
-          npm install -g diff2html-cli
-      - name: Generate Model Diff
-        if: github.event.pull_request
-        run: |
-          set -x
-          MODELS=`pwd`/tmp-models
-          ls -1 tmp-models/
-          for m in $MODELS/*_main.qll ; do
-            t="${m/main/"pr"}"
-            basename=`basename $m`
-            name="diff_${basename/_main.qll/""}"
-            (diff -w -u $m $t | diff2html -i stdin -F $MODELS/$name.html) || true
-          done
-      - uses: actions/upload-artifact@v2
-        with:
-          name: models
-          path: tmp-models/*.qll
-          retention-days: 20
-      - uses: actions/upload-artifact@v2
-        with:
-          name: diffs
-          path: tmp-models/*.html
-          retention-days: 20

.github/workflows/ql-for-ql-dataset_measure.yml

@@ -17,7 +17,7 @@ jobs:
       CODEQL_THREADS: 4 # TODO: remove this once it's set by the CLI
     strategy:
       matrix:
-        repo:
+        repo: 
           - github/codeql
           - github/codeql-go
     runs-on: ubuntu-latest
@@ -35,7 +35,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ql/target
-          key: ${{ runner.os }}-qltest-cargo-${{ hashFiles('ql/**/Cargo.lock') }}
+          key: ${{ runner.os }}-qltest-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Build Extractor
         run: cd ql; env "PATH=$PATH:`dirname ${CODEQL}`" ./create-extractor-pack.sh
         env:

.github/workflows/ql-for-ql-tests.yml

@@ -29,24 +29,24 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ql/target
-          key: ${{ runner.os }}-qltest-cargo-${{ hashFiles('ql/**/Cargo.lock') }}
+          key: ${{ runner.os }}-qltest-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Build extractor
         run: |
           cd ql;
           codeqlpath=$(dirname ${{ steps.find-codeql.outputs.codeql-path }});
           env "PATH=$PATH:$codeqlpath" ./create-extractor-pack.sh
       - name: Run QL tests
-        run: |
+        run: | 
           "${CODEQL}" test run --check-databases --check-unused-labels --check-repeated-labels --check-redefined-labels --check-use-before-definition --search-path "${{ github.workspace }}/ql/extractor-pack" --consistency-queries ql/ql/consistency-queries ql/ql/test
         env:
           CODEQL: ${{ steps.find-codeql.outputs.codeql-path }}
       - name: Check QL formatting
-        run: |
+        run: | 
           find ql/ql "(" -name "*.ql" -or -name "*.qll" ")" -print0 | xargs -0 "${CODEQL}" query format --check-only
         env:
           CODEQL: ${{ steps.find-codeql.outputs.codeql-path }}
       - name: Check QL compilation
-        run: |
+        run: | 
           "${CODEQL}" query compile --check-only --threads=4 --warnings=error --search-path "${{ github.workspace }}/ql/extractor-pack" "ql/ql/src" "ql/ql/examples"
         env:
           CODEQL: ${{ steps.find-codeql.outputs.codeql-path }}

.github/workflows/ruby-build.yml

@@ -50,7 +50,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ruby/target
-          key: ${{ runner.os }}-ruby-rust-cargo-${{ hashFiles('ruby/**/Cargo.lock') }}
+          key: ${{ runner.os }}-rust-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Check formatting
         run: cargo fmt --all -- --check
       - name: Build

.github/workflows/ruby-qltest.yml

@@ -24,45 +24,27 @@ defaults:
     working-directory: ruby
 
 jobs:
-  qlformat:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: ./.github/actions/fetch-codeql
-      - name: Check QL formatting
-        run: find ql "(" -name "*.ql" -or -name "*.qll" ")" -print0 | xargs -0 codeql query format --check-only
-  qlcompile:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: ./.github/actions/fetch-codeql
-      - name: Check QL compilation
-        run: |
-          codeql query compile --check-only --threads=0 --ram 5000 --warnings=error "ql/src" "ql/examples"
-        env:
-          GITHUB_TOKEN: ${{ github.token }}
-  qlupgrade:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: ./.github/actions/fetch-codeql
-      - name: Check DB upgrade scripts
-        run: |
-          echo >empty.trap
-          codeql dataset import -S ql/lib/upgrades/initial/ruby.dbscheme testdb empty.trap
-          codeql dataset upgrade testdb --additional-packs ql/lib
-          diff -q testdb/ruby.dbscheme ql/lib/ruby.dbscheme
   qltest:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        slice: ["1/2", "2/2"]
     steps:
       - uses: actions/checkout@v2
       - uses: ./.github/actions/fetch-codeql
       - uses: ./ruby/actions/create-extractor-pack
       - name: Run QL tests
         run: |
-          codeql test run --threads=0 --ram 5000 --slice ${{ matrix.slice }} --search-path "${{ github.workspace }}/ruby/extractor-pack" --check-databases --check-unused-labels --check-repeated-labels --check-redefined-labels --check-use-before-definition --consistency-queries ql/consistency-queries ql/test
+          codeql test run --search-path "${{ github.workspace }}/ruby/extractor-pack" --check-databases --check-unused-labels --check-repeated-labels --check-redefined-labels --check-use-before-definition --consistency-queries ql/consistency-queries ql/test
         env:
           GITHUB_TOKEN: ${{ github.token }}
+      - name: Check QL formatting
+        run: find ql "(" -name "*.ql" -or -name "*.qll" ")" -print0 | xargs -0 codeql query format --check-only
+      - name: Check QL compilation
+        run: |
+          codeql query compile --check-only --threads=4 --warnings=error "ql/src" "ql/examples"
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+      - name: Check DB upgrade scripts
+        run: |
+          echo >empty.trap
+          codeql dataset import -S ql/lib/upgrades/initial/ruby.dbscheme testdb empty.trap
+          codeql dataset upgrade testdb --additional-packs ql/lib
+          diff -q testdb/ruby.dbscheme ql/lib/ruby.dbscheme

config/identical-files.json

@@ -7,7 +7,6 @@
     "java/ql/lib/semmle/code/java/dataflow/internal/DataFlowImpl5.qll",
     "java/ql/lib/semmle/code/java/dataflow/internal/DataFlowImpl6.qll",
     "java/ql/lib/semmle/code/java/dataflow/internal/DataFlowImplForSerializability.qll",
-    "java/ql/lib/semmle/code/java/dataflow/internal/DataFlowImplForOnActivityResult.qll",
     "cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowImpl.qll",
     "cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowImpl2.qll",
     "cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowImpl3.qll",

cpp/ql/examples/qlpack.yml

@@ -1,6 +1,4 @@
 name: codeql/cpp-examples
-groups: 
-  - cpp
-  - examples
+version: 0.0.2
 dependencies:
   codeql/cpp-all: "*"

cpp/ql/lib/CHANGELOG.md

@@ -1,5 +1,3 @@
-## 0.0.7
-
 ## 0.0.6
 
 ## 0.0.5

cpp/ql/lib/change-notes/2022-03-03-template-implicit-copy.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The `Class::hasImplicitCopyConstructor` and `Class::hasImplicitCopyAssignmentOperator` methods now handle template instantiations more accurately. This should improve results for the `cpp/rule-of-two` query.

cpp/ql/lib/change-notes/released/0.0.7.md

@@ -1 +0,0 @@
-## 0.0.7

cpp/ql/lib/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 0.0.7
+lastReleaseVersion: 0.0.6

cpp/ql/lib/qlpack.yml

@@ -1,5 +1,5 @@
 name: codeql/cpp-all
-version: 0.0.8-dev
+version: 0.0.7-dev
 groups: cpp
 dbscheme: semmlecode.cpp.dbscheme
 extractor: cpp

cpp/ql/lib/semmle/code/cpp/Class.qll

@@ -206,7 +206,9 @@ class Class extends UserType {
    * it is callable by a particular caller. For C++11, there's also a question
    * of whether to include members that are defaulted or deleted.
    */
-  deprecated predicate hasCopyConstructor() { this.getAMemberFunction() instanceof CopyConstructor }
+  deprecated predicate hasCopyConstructor() {
+    exists(CopyConstructor cc | cc = this.getAMemberFunction())
+  }
 
   /**
    * Holds if this class has a copy assignment operator that is either
@@ -222,7 +224,7 @@ class Class extends UserType {
    * or deleted.
    */
   deprecated predicate hasCopyAssignmentOperator() {
-    this.getAMemberFunction() instanceof CopyAssignmentOperator
+    exists(CopyAssignmentOperator coa | coa = this.getAMemberFunction())
   }
 
   /**
@@ -285,17 +287,7 @@ class Class extends UserType {
   predicate hasImplicitCopyConstructor() {
     not this.implicitCopyConstructorDeleted() and
     forall(CopyConstructor cc | cc = this.getAMemberFunction() |
-      cc.isCompilerGenerated() and not cc.isDeleted() and not cc.isDefaulted()
-    ) and
-    (
-      not this instanceof ClassTemplateInstantiation
-      or
-      this.(ClassTemplateInstantiation).getTemplate().hasImplicitCopyConstructor()
-    ) and
-    (
-      not this instanceof PartialClassTemplateSpecialization
-      or
-      this.(PartialClassTemplateSpecialization).getPrimaryTemplate().hasImplicitCopyConstructor()
+      cc.isCompilerGenerated() and not cc.isDeleted()
     )
   }
 
@@ -310,19 +302,7 @@ class Class extends UserType {
   predicate hasImplicitCopyAssignmentOperator() {
     not this.implicitCopyAssignmentOperatorDeleted() and
     forall(CopyAssignmentOperator ca | ca = this.getAMemberFunction() |
-      ca.isCompilerGenerated() and not ca.isDeleted() and not ca.isDefaulted()
-    ) and
-    (
-      not this instanceof ClassTemplateInstantiation
-      or
-      this.(ClassTemplateInstantiation).getTemplate().hasImplicitCopyAssignmentOperator()
-    ) and
-    (
-      not this instanceof PartialClassTemplateSpecialization
-      or
-      this.(PartialClassTemplateSpecialization)
-          .getPrimaryTemplate()
-          .hasImplicitCopyAssignmentOperator()
+      ca.isCompilerGenerated() and not ca.isDeleted()
     )
   }
 
@@ -333,12 +313,6 @@ class Class extends UserType {
    * http://en.cppreference.com/w/cpp/language/copy_constructor#Deleted_implicitly-declared_copy_constructor
    */
   predicate implicitCopyConstructorDeleted() {
-    forex(CopyConstructor cc | cc = this.getAConstructor() |
-      cc.isDeleted()
-      or
-      not cc.isCompilerGenerated()
-    )
-    or
     // - T has non-static data members that cannot be copied (have deleted,
     //   inaccessible, or ambiguous copy constructors);
     exists(Type t | t = this.getAFieldSubobjectType().getUnspecifiedType() |
@@ -346,6 +320,34 @@ class Class extends UserType {
       // constructors are considered equal.
       this.cannotAccessCopyConstructorOnAny(t)
     )
+    or
+    // - T has direct or virtual base class that cannot be copied (has deleted,
+    //   inaccessible, or ambiguous copy constructors);
+    exists(Class c | c = this.getADirectOrVirtualBase() |
+      // Note: Overload resolution is not implemented -- all copy
+      // constructors are considered equal.
+      this.cannotAccessCopyConstructorOnThis(c)
+    )
+    or
+    // - T has direct or virtual base class with a deleted or inaccessible
+    //   destructor;
+    exists(Class base | base = this.getADirectOrVirtualBase() |
+      this.cannotAccessDestructor(base, this)
+    )
+    or
+    // - T has a user-defined move constructor or move assignment operator;
+    exists(MoveConstructor mc | mc = this.getAMemberFunction() | not mc.isCompilerGenerated())
+    or
+    exists(MoveAssignmentOperator ma | ma = this.getAMemberFunction() |
+      not ma.isCompilerGenerated()
+    )
+    or
+    // - T is a union and has a variant member with non-trivial copy
+    //   constructor (since C++11)
+    none() // Not implemented
+    or
+    // - T has a data member of rvalue reference type.
+    exists(Type t | t = this.getAFieldSubobjectType() | t instanceof RValueReferenceType)
   }
 
   /**
@@ -355,12 +357,34 @@ class Class extends UserType {
    * http://en.cppreference.com/w/cpp/language/copy_assignment#Deleted_implicitly-declared_copy_assignment_operator
    */
   predicate implicitCopyAssignmentOperatorDeleted() {
-    forex(CopyAssignmentOperator ca | ca = this.getAMemberFunction() |
-      ca.isDeleted()
-      or
-      not ca.isCompilerGenerated()
+    // - T has a user-declared move constructor;
+    exists(MoveConstructor mc | mc = this.getAMemberFunction() | not mc.isCompilerGenerated())
+    or
+    // - T has a user-declared move assignment operator.
+    exists(MoveAssignmentOperator ma | ma = this.getAMemberFunction() |
+      not ma.isCompilerGenerated()
     )
     or
+    // - T has a non-static data member of non-class type (or array thereof)
+    //   that is const;
+    exists(Type t | t = this.getAFieldSubobjectType() |
+      // The rule for this case refers only to non-class types only, but our
+      // implementation extends it to cover class types too. Class types are
+      // supposed to be covered by the rule below on data members that
+      // cannot be copy-assigned. Copy-assigning a const class-typed member
+      // would call an overload of type
+      // `const C& operator=(const C&) const;`. Such an overload is unlikely
+      // to exist because it contradicts the intention of "const": it allows
+      // assigning to a const object. But since we have not implemented the
+      // ability to distinguish between overloads, we cannot distinguish that
+      // overload from the ordinary `C& operator=(const C&);`. Instead, we
+      // require class types to be non-const in this clause.
+      /* not t instanceof Class and */ t.isConst()
+    )
+    or
+    // - T has a non-static data member of a reference type;
+    exists(Type t | t = this.getAFieldSubobjectType() | t instanceof ReferenceType)
+    or
     // - T has a non-static data member or a direct or virtual base class that
     //   cannot be copy-assigned (overload resolution for the copy assignment
     //   fails, or selects a deleted or inaccessible function);
@@ -369,6 +393,15 @@ class Class extends UserType {
       // operators are considered equal.
       this.cannotAccessCopyAssignmentOperatorOnAny(t)
     )
+    or
+    exists(Class c | c = this.getADirectOrVirtualBase() |
+      // Note: Overload resolution is not implemented -- all copy assignment
+      // operators are considered equal.
+      this.cannotAccessCopyAssignmentOperatorOnThis(c)
+    )
+    // - T is a union-like class, and has a variant member whose corresponding
+    //   assignment operator is non-trivial.
+    // Not implemented
   }
 
   /** Gets the destructor of this class, struct or union, if any. */
@@ -854,7 +887,7 @@ class NestedClass extends Class {
  * pure virtual function.
  */
 class AbstractClass extends Class {
-  AbstractClass() { this.getAMemberFunction() instanceof PureVirtualFunction }
+  AbstractClass() { exists(PureVirtualFunction f | this.getAMemberFunction() = f) }
 
   override string getAPrimaryQlClass() { result = "AbstractClass" }
 }

cpp/ql/lib/semmle/code/cpp/Specifier.qll

@@ -286,13 +286,13 @@ class AttributeArgument extends Element, @attribute_arg {
   override Location getLocation() { attribute_args(underlyingElement(this), _, _, _, result) }
 
   override string toString() {
-    if underlyingElement(this) instanceof @attribute_arg_empty
+    if exists(@attribute_arg_empty self | self = underlyingElement(this))
     then result = "empty argument"
     else
       exists(string prefix, string tail |
         (if exists(this.getName()) then prefix = this.getName() + "=" else prefix = "") and
         (
-          if underlyingElement(this) instanceof @attribute_arg_type
+          if exists(@attribute_arg_type self | self = underlyingElement(this))
           then tail = this.getValueType().getName()
           else tail = this.getValueText()
         ) and

cpp/ql/lib/semmle/code/cpp/XML.qll

@@ -233,7 +233,7 @@ class XMLElement extends @xmlelement, XMLParent, XMLLocatable {
   XMLAttribute getAttribute(string name) { result.getElement() = this and result.getName() = name }
 
   /** Holds if this XML element has an attribute with the specified `name`. */
-  predicate hasAttribute(string name) { exists(this.getAttribute(name)) }
+  predicate hasAttribute(string name) { exists(XMLAttribute a | a = this.getAttribute(name)) }
 
   /** Gets the value of the attribute with the specified `name`, if any. */
   string getAttributeValue(string name) { result = this.getAttribute(name).getValue() }

cpp/ql/lib/semmle/code/cpp/commons/Printf.qll

@@ -1122,7 +1122,7 @@ class FormatLiteral extends Literal {
    * conversion specifier of this format string; has no result if this cannot
    * be determined.
    */
-  int getMaxConvertedLength(int n) { result = max(this.getMaxConvertedLength(n, _)) }
+  int getMaxConvertedLength(int n) { result = max(getMaxConvertedLength(n, _)) }
 
   /**
    * Gets the maximum length of the string that can be produced by the nth
@@ -1353,7 +1353,7 @@ class FormatLiteral extends Literal {
    * determining whether a buffer overflow is caused by long float to string
    * conversions.
    */
-  int getMaxConvertedLengthLimited(int n) { result = max(this.getMaxConvertedLengthLimited(n, _)) }
+  int getMaxConvertedLengthLimited(int n) { result = max(getMaxConvertedLengthLimited(n, _)) }
 
   /**
    * Gets the maximum length of the string that can be produced by the nth

cpp/ql/lib/semmle/code/cpp/controlflow/IRGuards.qll

@@ -29,7 +29,7 @@ class GuardCondition extends Expr {
     exists(IRGuardCondition ir | this = ir.getUnconvertedResultExpression())
     or
     // no binary operators in the IR
-    this.(BinaryLogicalOperation).getAnOperand() instanceof GuardCondition
+    exists(GuardCondition gc | this.(BinaryLogicalOperation).getAnOperand() = gc)
     or
     // the IR short-circuits if(!x)
     // don't produce a guard condition for `y = !x` and other non-short-circuited cases
@@ -98,7 +98,7 @@ class GuardCondition extends Expr {
  */
 private class GuardConditionFromBinaryLogicalOperator extends GuardCondition {
   GuardConditionFromBinaryLogicalOperator() {
-    this.(BinaryLogicalOperation).getAnOperand() instanceof GuardCondition
+    exists(GuardCondition gc | this.(BinaryLogicalOperation).getAnOperand() = gc)
   }
 
   override predicate controls(BasicBlock controlled, boolean testIsTrue) {

cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowImplCommon.qll

@@ -1290,7 +1290,7 @@ class DataFlowCallOption extends TDataFlowCallOption {
   }
 }
 
-/** A `Content` tagged with the type of a containing object. */
+/** Content tagged with the type of a containing object. */
 class TypedContent extends MkTypedContent {
   private Content c;
   private DataFlowType t;

cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowPrivate.qll

@@ -48,7 +48,7 @@ private class Argument extends Expr {
  */
 class ArgumentNode extends Node {
   ArgumentNode() {
-    this.asExpr() instanceof Argument or
+    exists(Argument arg | this.asExpr() = arg) or
     this = getInstanceArgument(_)
   }
 

cpp/ql/lib/semmle/code/cpp/exprs/Access.qll

@@ -84,8 +84,8 @@ class VariableAccess extends Access, @varaccess {
     exists(Assignment a | a.getLValue() = this) or
     exists(CrementOperation c | c.getOperand() = this) or
     exists(AddressOfExpr addof | addof.getOperand() = this) or
-    this.getConversion() instanceof ReferenceToExpr or
-    this.getConversion() instanceof ArrayToPointerConversion
+    exists(ReferenceToExpr rte | this.getConversion() = rte) or
+    exists(ArrayToPointerConversion atpc | this.getConversion() = atpc)
   }
 
   /**
@@ -104,8 +104,8 @@ class VariableAccess extends Access, @varaccess {
   predicate isRValue() {
     not exists(AssignExpr ae | ae.getLValue() = this) and
     not exists(AddressOfExpr addof | addof.getOperand() = this) and
-    not this.getConversion() instanceof ReferenceToExpr and
-    not this.getConversion() instanceof ArrayToPointerConversion
+    not exists(ReferenceToExpr rte | this.getConversion() = rte) and
+    not exists(ArrayToPointerConversion atpc | this.getConversion() = atpc)
   }
 
   /**
@@ -218,7 +218,9 @@ class PointerFieldAccess extends FieldAccess {
 class DotFieldAccess extends FieldAccess {
   override string getAPrimaryQlClass() { result = "DotFieldAccess" }
 
-  DotFieldAccess() { this.getQualifier().getFullyConverted().getUnspecifiedType() instanceof Class }
+  DotFieldAccess() {
+    exists(Class c | c = this.getQualifier().getFullyConverted().getUnspecifiedType())
+  }
 }
 
 /**

cpp/ql/lib/semmle/code/cpp/exprs/Call.qll

@@ -35,7 +35,7 @@ class Call extends Expr, NameQualifiableElement, TCall {
    *
    * For example, `ptr->f()` has a qualifier, whereas plain `f()` does not.
    */
-  predicate hasQualifier() { exists(this.getChild(-1)) }
+  predicate hasQualifier() { exists(Expr e | this.getChild(-1) = e) }
 
   /**
    * Gets the expression to the left of the function name or function pointer variable name.

cpp/ql/lib/semmle/code/cpp/exprs/Cast.qll

@@ -724,7 +724,7 @@ class SizeofOperator extends Expr, @runtime_sizeof {
  * ```
  */
 class SizeofExprOperator extends SizeofOperator {
-  SizeofExprOperator() { exists(this.getChild(0)) }
+  SizeofExprOperator() { exists(Expr e | this.getChild(0) = e) }
 
   override string getAPrimaryQlClass() { result = "SizeofExprOperator" }
 
@@ -787,7 +787,7 @@ class AlignofOperator extends Expr, @runtime_alignof {
  * ```
  */
 class AlignofExprOperator extends AlignofOperator {
-  AlignofExprOperator() { exists(this.getChild(0)) }
+  AlignofExprOperator() { exists(Expr e | this.getChild(0) = e) }
 
   /**
    * Gets the contained expression.

cpp/ql/lib/semmle/code/cpp/ir/dataflow/DefaultTaintTracking.qll

@@ -1,8 +1,3 @@
-/**
- * An IR taint tracking library that uses an IR DataFlow configuration to track
- * taint from user inputs as defined by `semmle.code.cpp.security.Security`.
- */
-
 import cpp
 import semmle.code.cpp.security.Security
 private import semmle.code.cpp.ir.dataflow.DataFlow

cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/DataFlowImplCommon.qll

@@ -1290,7 +1290,7 @@ class DataFlowCallOption extends TDataFlowCallOption {
   }
 }
 
-/** A `Content` tagged with the type of a containing object. */
+/** Content tagged with the type of a containing object. */
 class TypedContent extends MkTypedContent {
   private Content c;
   private DataFlowType t;

cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/SideEffects.qll

@@ -111,45 +111,6 @@ private predicate hasDefaultSideEffect(Call call, ParameterIndex i, boolean buff
   )
 }
 
-/**
- * A `Call` or `NewOrNewArrayExpr`.
- *
- * Both kinds of expression invoke a function as part of their evaluation. This class provides a
- * way to treat both kinds of function similarly, and to get the invoked `Function`.
- */
-class CallOrAllocationExpr extends Expr {
-  CallOrAllocationExpr() {
-    this instanceof Call
-    or
-    this instanceof NewOrNewArrayExpr
-  }
-
-  /** Gets the `Function` invoked by this expression, if known. */
-  final Function getTarget() {
-    result = this.(Call).getTarget()
-    or
-    result = this.(NewOrNewArrayExpr).getAllocator()
-  }
-}
-
-/**
- * Returns the side effect opcode, if any, that represents any side effects not specifically modeled
- * by an argument side effect.
- */
-Opcode getCallSideEffectOpcode(CallOrAllocationExpr expr) {
-  not exists(expr.getTarget().(SideEffectFunction)) and result instanceof Opcode::CallSideEffect
-  or
-  exists(SideEffectFunction sideEffectFunction |
-    sideEffectFunction = expr.getTarget() and
-    if not sideEffectFunction.hasOnlySpecificWriteSideEffects()
-    then result instanceof Opcode::CallSideEffect
-    else (
-      not sideEffectFunction.hasOnlySpecificReadSideEffects() and
-      result instanceof Opcode::CallReadSideEffect
-    )
-  )
-}
-
 /**
  * Returns a side effect opcode for parameter index `i` of the specified call.
  *

cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/TranslatedCall.qll

@@ -49,6 +49,19 @@ abstract class TranslatedCall extends TranslatedExpr {
     tag = CallTag() and
     opcode instanceof Opcode::Call and
     resultType = getTypeForPRValue(getCallResultType())
+    or
+    hasSideEffect() and
+    tag = CallSideEffectTag() and
+    (
+      if hasWriteSideEffect()
+      then (
+        opcode instanceof Opcode::CallSideEffect and
+        resultType = getUnknownType()
+      ) else (
+        opcode instanceof Opcode::CallReadSideEffect and
+        resultType = getVoidType()
+      )
+    )
   }
 
   override Instruction getChildSuccessor(TranslatedElement child) {
@@ -71,8 +84,25 @@ abstract class TranslatedCall extends TranslatedExpr {
 
   override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) {
     kind instanceof GotoEdge and
-    tag = CallTag() and
-    result = getSideEffects().getFirstInstruction()
+    (
+      (
+        tag = CallTag() and
+        if hasSideEffect()
+        then result = getInstruction(CallSideEffectTag())
+        else
+          if hasPreciseSideEffect()
+          then result = getSideEffects().getFirstInstruction()
+          else result = getParent().getChildSuccessor(this)
+      )
+      or
+      (
+        hasSideEffect() and
+        tag = CallSideEffectTag() and
+        if hasPreciseSideEffect()
+        then result = getSideEffects().getFirstInstruction()
+        else result = getParent().getChildSuccessor(this)
+      )
+    )
   }
 
   override Instruction getInstructionRegisterOperand(InstructionTag tag, OperandTag operandTag) {
@@ -91,6 +121,15 @@ abstract class TranslatedCall extends TranslatedExpr {
     )
   }
 
+  final override CppType getInstructionMemoryOperandType(
+    InstructionTag tag, TypedOperandTag operandTag
+  ) {
+    tag = CallSideEffectTag() and
+    hasSideEffect() and
+    operandTag instanceof SideEffectOperandTag and
+    result = getUnknownType()
+  }
+
   final override Instruction getResult() { result = getInstruction(CallTag()) }
 
   /**
@@ -161,31 +200,40 @@ abstract class TranslatedCall extends TranslatedExpr {
    */
   abstract predicate hasArguments();
 
+  predicate hasReadSideEffect() { any() }
+
+  predicate hasWriteSideEffect() { any() }
+
+  private predicate hasSideEffect() { hasReadSideEffect() or hasWriteSideEffect() }
+
+  override Instruction getPrimaryInstructionForSideEffect(InstructionTag tag) {
+    hasSideEffect() and
+    tag = CallSideEffectTag() and
+    result = getResult()
+  }
+
+  predicate hasPreciseSideEffect() { exists(getSideEffects()) }
+
   final TranslatedSideEffects getSideEffects() { result.getExpr() = expr }
 }
 
-/**
- * The IR translation of the side effects of the parent `TranslatedElement`.
- *
- * This object does not itself generate the side effect instructions. Instead, its children provide
- * the actual side effects, with this object acting as a placeholder so the parent only needs to
- * insert this one element at the point where all the side effects are supposed to occur.
- */
 abstract class TranslatedSideEffects extends TranslatedElement {
-  /** Gets the expression whose side effects are being modeled. */
   abstract Expr getExpr();
 
   final override Locatable getAST() { result = getExpr() }
 
   final override Function getFunction() { result = getExpr().getEnclosingFunction() }
 
-  final override TranslatedElement getChild(int i) {
+  override TranslatedElement getChild(int i) {
     result =
-      rank[i + 1](TranslatedSideEffect tse, int group, int indexInGroup |
-        tse.getPrimaryExpr() = getExpr() and
-        tse.sortOrder(group, indexInGroup)
+      rank[i + 1](TranslatedSideEffect tse, int isWrite, int index |
+        (
+          tse.getCall() = getExpr() and
+          tse.getArgumentIndex() = index and
+          if tse.isWrite() then isWrite = 1 else isWrite = 0
+        )
       |
-        tse order by group, indexInGroup
+        tse order by isWrite, index
       )
   }
 
@@ -198,21 +246,12 @@ abstract class TranslatedSideEffects extends TranslatedElement {
     )
   }
 
-  final override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType type) {
-    none()
+  /**
+   * Gets the `TranslatedFunction` containing this expression.
+   */
+  final TranslatedFunction getEnclosingFunction() {
+    result = getTranslatedFunction(getExpr().getEnclosingFunction())
   }
-
-  final override Instruction getFirstInstruction() {
-    result = getChild(0).getFirstInstruction()
-    or
-    // Some functions, like `std::move()`, have no side effects whatsoever.
-    not exists(getChild(0)) and result = getParent().getChildSuccessor(this)
-  }
-
-  final override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) { none() }
-
-  /** Gets the primary instruction to be associated with each side effect instruction. */
-  abstract Instruction getPrimaryInstruction();
 }
 
 /**
@@ -286,6 +325,14 @@ class TranslatedFunctionCall extends TranslatedCallExpr, TranslatedDirectCall {
     tag = CallTargetTag() and result = expr.getTarget()
   }
 
+  override predicate hasReadSideEffect() {
+    not expr.getTarget().(SideEffectFunction).hasOnlySpecificReadSideEffects()
+  }
+
+  override predicate hasWriteSideEffect() {
+    not expr.getTarget().(SideEffectFunction).hasOnlySpecificWriteSideEffects()
+  }
+
   override Instruction getQualifierResult() {
     hasQualifier() and
     result = getQualifier().getResult()
@@ -316,116 +363,209 @@ class TranslatedStructorCall extends TranslatedFunctionCall {
   override predicate hasQualifier() { any() }
 }
 
-/**
- * The IR translation of the side effects of a function call, including the implicit allocator
- * call in a `new` or `new[]` expression.
- */
+class TranslatedAllocationSideEffects extends TranslatedSideEffects,
+  TTranslatedAllocationSideEffects {
+  AllocationExpr expr;
+
+  TranslatedAllocationSideEffects() { this = TTranslatedAllocationSideEffects(expr) }
+
+  final override AllocationExpr getExpr() { result = expr }
+
+  override string toString() { result = "(allocation side effects for " + expr.toString() + ")" }
+
+  override Instruction getFirstInstruction() { result = getInstruction(OnlyInstructionTag()) }
+
+  override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType type) {
+    opcode instanceof Opcode::InitializeDynamicAllocation and
+    tag = OnlyInstructionTag() and
+    type = getUnknownType()
+  }
+
+  override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) {
+    tag = OnlyInstructionTag() and
+    kind = EdgeKind::gotoEdge() and
+    if exists(getChild(0))
+    then result = getChild(0).getFirstInstruction()
+    else result = getParent().getChildSuccessor(this)
+  }
+
+  override Instruction getInstructionRegisterOperand(InstructionTag tag, OperandTag operandTag) {
+    tag = OnlyInstructionTag() and
+    operandTag = addressOperand() and
+    result = getPrimaryInstructionForSideEffect(OnlyInstructionTag())
+  }
+
+  override Instruction getPrimaryInstructionForSideEffect(InstructionTag tag) {
+    tag = OnlyInstructionTag() and
+    if expr instanceof NewOrNewArrayExpr
+    then result = getTranslatedAllocatorCall(expr).getInstruction(CallTag())
+    else result = getTranslatedCallInstruction(expr)
+  }
+}
+
 class TranslatedCallSideEffects extends TranslatedSideEffects, TTranslatedCallSideEffects {
-  Expr expr;
+  Call expr;
 
   TranslatedCallSideEffects() { this = TTranslatedCallSideEffects(expr) }
 
-  final override string toString() { result = "(side effects  for " + expr.toString() + ")" }
+  override string toString() { result = "(side effects  for " + expr.toString() + ")" }
 
-  final override Expr getExpr() { result = expr }
+  override Call getExpr() { result = expr }
 
-  final override Instruction getPrimaryInstruction() {
-    expr instanceof Call and result = getTranslatedCallInstruction(expr)
-    or
-    expr instanceof NewOrNewArrayExpr and
-    result = getTranslatedAllocatorCall(expr).getInstruction(CallTag())
-  }
-}
+  override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType type) { none() }
 
-/** Returns the sort group index for argument read side effects. */
-private int argumentReadGroup() { result = 1 }
+  override Instruction getFirstInstruction() { result = getChild(0).getFirstInstruction() }
 
-/** Returns the sort group index for conservative call side effects. */
-private int callSideEffectGroup() {
-  result = 0 // Make this group first for now to preserve the existing ordering
-}
+  override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) { none() }
 
-/** Returns the sort group index for argument write side effects. */
-private int argumentWriteGroup() { result = 2 }
-
-/** Returns the sort group index for dynamic allocation side effects. */
-private int initializeAllocationGroup() { result = 3 }
-
-/**
- * The IR translation of a single side effect of a call.
- */
-abstract class TranslatedSideEffect extends TranslatedElement {
-  final override TranslatedElement getChild(int n) { none() }
-
-  final override Instruction getChildSuccessor(TranslatedElement child) { none() }
-
-  final override Instruction getFirstInstruction() { result = getInstruction(OnlyInstructionTag()) }
-
-  final override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType type) {
+  override Instruction getPrimaryInstructionForSideEffect(InstructionTag tag) {
     tag = OnlyInstructionTag() and
-    sideEffectInstruction(opcode, type)
+    result = getTranslatedCallInstruction(expr)
+  }
+}
+
+class TranslatedStructorCallSideEffects extends TranslatedCallSideEffects {
+  TranslatedStructorCallSideEffects() {
+    getParent().(TranslatedStructorCall).hasQualifier() and
+    getASideEffectOpcode(expr, -1) instanceof WriteSideEffectOpcode
   }
 
-  final override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) {
+  override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType t) {
+    tag instanceof OnlyInstructionTag and
+    t = getTypeForPRValue(expr.getTarget().getDeclaringType()) and
+    opcode = getASideEffectOpcode(expr, -1).(WriteSideEffectOpcode)
+  }
+
+  override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) {
+    (
+      if exists(getChild(0))
+      then result = getChild(0).getFirstInstruction()
+      else result = getParent().getChildSuccessor(this)
+    ) and
+    tag = OnlyInstructionTag() and
+    kind instanceof GotoEdge
+  }
+
+  override Instruction getFirstInstruction() { result = getInstruction(OnlyInstructionTag()) }
+
+  override Instruction getInstructionRegisterOperand(InstructionTag tag, OperandTag operandTag) {
+    tag instanceof OnlyInstructionTag and
+    operandTag instanceof AddressOperandTag and
+    result = getParent().(TranslatedStructorCall).getQualifierResult()
+  }
+
+  final override int getInstructionIndex(InstructionTag tag) {
+    tag = OnlyInstructionTag() and
+    result = -1
+  }
+}
+
+class TranslatedSideEffect extends TranslatedElement, TTranslatedArgumentSideEffect {
+  Call call;
+  Expr arg;
+  int index;
+  SideEffectOpcode sideEffectOpcode;
+
+  TranslatedSideEffect() {
+    this = TTranslatedArgumentSideEffect(call, arg, index, sideEffectOpcode)
+  }
+
+  override Locatable getAST() { result = arg }
+
+  Expr getExpr() { result = arg }
+
+  Call getCall() { result = call }
+
+  int getArgumentIndex() { result = index }
+
+  predicate isWrite() { sideEffectOpcode instanceof WriteSideEffectOpcode }
+
+  override string toString() {
+    isWrite() and
+    result = "(write side effect for " + arg.toString() + ")"
+    or
+    not isWrite() and
+    result = "(read side effect for " + arg.toString() + ")"
+  }
+
+  override TranslatedElement getChild(int n) { none() }
+
+  override Instruction getChildSuccessor(TranslatedElement child) { none() }
+
+  override Instruction getFirstInstruction() { result = getInstruction(OnlyInstructionTag()) }
+
+  override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType type) {
+    tag = OnlyInstructionTag() and
+    opcode = sideEffectOpcode and
+    (
+      isWrite() and
+      (
+        opcode instanceof BufferAccessOpcode and
+        type = getUnknownType()
+        or
+        not opcode instanceof BufferAccessOpcode and
+        exists(Type baseType | baseType = arg.getUnspecifiedType().(DerivedType).getBaseType() |
+          if baseType instanceof VoidType
+          then type = getUnknownType()
+          else type = getTypeForPRValueOrUnknown(baseType)
+        )
+        or
+        index = -1 and
+        not arg.getUnspecifiedType() instanceof DerivedType and
+        type = getTypeForPRValueOrUnknown(arg.getUnspecifiedType())
+      )
+      or
+      not isWrite() and
+      type = getVoidType()
+    )
+  }
+
+  override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) {
     result = getParent().getChildSuccessor(this) and
     tag = OnlyInstructionTag() and
     kind instanceof GotoEdge
   }
 
-  final override Function getFunction() { result = getParent().getFunction() }
-
-  final override Instruction getPrimaryInstructionForSideEffect(InstructionTag tag) {
-    tag = OnlyInstructionTag() and
-    result = getParent().(TranslatedSideEffects).getPrimaryInstruction()
-  }
-
-  /**
-   * Gets the expression that caused this side effect.
-   *
-   * All side effects with the same `getPrimaryExpr()` will appear in the same contiguous sequence
-   * in the IR.
-   */
-  abstract Expr getPrimaryExpr();
-
-  /**
-   * Gets the order in which this side effect should be sorted with respect to other side effects
-   * for the same expression.
-   *
-   * Side effects are sorted first by `group`, and then by `indexInGroup`.
-   */
-  abstract predicate sortOrder(int group, int indexInGroup);
-
-  /**
-   * Gets the opcode and result type for the side effect instruction.
-   */
-  abstract predicate sideEffectInstruction(Opcode opcode, CppType type);
-}
-
-/**
- * The IR translation of a single argument side effect for a call.
- */
-abstract class TranslatedArgumentSideEffect extends TranslatedSideEffect {
-  Call call;
-  int index;
-  SideEffectOpcode sideEffectOpcode;
-
-  // All subclass charpreds must bind the `index` field.
-  bindingset[index]
-  TranslatedArgumentSideEffect() { any() }
-
-  override string toString() {
-    isWrite() and
-    result = "(write side effect for " + getArgString() + ")"
+  override Instruction getInstructionRegisterOperand(InstructionTag tag, OperandTag operandTag) {
+    tag instanceof OnlyInstructionTag and
+    operandTag instanceof AddressOperandTag and
+    result = getTranslatedExpr(arg).getResult()
     or
-    not isWrite() and
-    result = "(read side effect for " + getArgString() + ")"
+    tag instanceof OnlyInstructionTag and
+    operandTag instanceof BufferSizeOperandTag and
+    result =
+      getTranslatedExpr(call.getArgument(call.getTarget()
+              .(SideEffectFunction)
+              .getParameterSizeIndex(index)).getFullyConverted()).getResult()
   }
 
-  override Call getPrimaryExpr() { result = call }
+  override CppType getInstructionMemoryOperandType(InstructionTag tag, TypedOperandTag operandTag) {
+    not isWrite() and
+    if sideEffectOpcode instanceof BufferAccessOpcode
+    then
+      result = getUnknownType() and
+      tag instanceof OnlyInstructionTag and
+      operandTag instanceof SideEffectOperandTag
+    else
+      exists(Type operandType |
+        tag instanceof OnlyInstructionTag and
+        operandType = arg.getType().getUnspecifiedType().(DerivedType).getBaseType() and
+        operandTag instanceof SideEffectOperandTag
+        or
+        tag instanceof OnlyInstructionTag and
+        operandType = arg.getType().getUnspecifiedType() and
+        not operandType instanceof DerivedType and
+        operandTag instanceof SideEffectOperandTag
+      |
+        // If the type we select is an incomplete type (e.g. a forward-declared `struct`), there will
+        // not be a `CppType` that represents that type. In that case, fall back to `UnknownCppType`.
+        result = getTypeForPRValueOrUnknown(operandType)
+      )
+  }
 
-  override predicate sortOrder(int group, int indexInGroup) {
-    indexInGroup = index and
-    if isWrite() then group = argumentWriteGroup() else group = argumentReadGroup()
+  override Instruction getPrimaryInstructionForSideEffect(InstructionTag tag) {
+    tag = OnlyInstructionTag() and
+    result = getTranslatedCallInstruction(call)
   }
 
   final override int getInstructionIndex(InstructionTag tag) {
@@ -437,199 +577,11 @@ abstract class TranslatedArgumentSideEffect extends TranslatedSideEffect {
    * Gets the `TranslatedFunction` containing this expression.
    */
   final TranslatedFunction getEnclosingFunction() {
-    result = getTranslatedFunction(call.getEnclosingFunction())
+    result = getTranslatedFunction(arg.getEnclosingFunction())
   }
 
-  final override predicate sideEffectInstruction(Opcode opcode, CppType type) {
-    opcode = sideEffectOpcode and
-    (
-      isWrite() and
-      (
-        opcode instanceof BufferAccessOpcode and
-        type = getUnknownType()
-        or
-        not opcode instanceof BufferAccessOpcode and
-        exists(Type indirectionType | indirectionType = getIndirectionType() |
-          if indirectionType instanceof VoidType
-          then type = getUnknownType()
-          else type = getTypeForPRValueOrUnknown(indirectionType)
-        )
-      )
-      or
-      not isWrite() and
-      type = getVoidType()
-    )
-  }
-
-  final override CppType getInstructionMemoryOperandType(
-    InstructionTag tag, TypedOperandTag operandTag
-  ) {
-    not isWrite() and
-    if sideEffectOpcode instanceof BufferAccessOpcode
-    then
-      result = getUnknownType() and
-      tag instanceof OnlyInstructionTag and
-      operandTag instanceof SideEffectOperandTag
-    else
-      exists(Type operandType |
-        tag instanceof OnlyInstructionTag and
-        operandType = getIndirectionType() and
-        operandTag instanceof SideEffectOperandTag
-      |
-        // If the type we select is an incomplete type (e.g. a forward-declared `struct`), there will
-        // not be a `CppType` that represents that type. In that case, fall back to `UnknownCppType`.
-        result = getTypeForPRValueOrUnknown(operandType)
-      )
-  }
-
-  final override Instruction getInstructionRegisterOperand(InstructionTag tag, OperandTag operandTag) {
-    tag instanceof OnlyInstructionTag and
-    operandTag instanceof AddressOperandTag and
-    result = getArgInstruction()
-    or
-    tag instanceof OnlyInstructionTag and
-    operandTag instanceof BufferSizeOperandTag and
-    result =
-      getTranslatedExpr(call.getArgument(call.getTarget()
-              .(SideEffectFunction)
-              .getParameterSizeIndex(index)).getFullyConverted()).getResult()
-  }
-
-  /** Holds if this side effect is a write side effect, rather than a read side effect. */
-  final predicate isWrite() { sideEffectOpcode instanceof WriteSideEffectOpcode }
-
-  /** Gets a text representation of the argument. */
-  abstract string getArgString();
-
-  /** Gets the `Instruction` whose result is the value of the argument. */
-  abstract Instruction getArgInstruction();
-
-  /** Gets the type pointed to by the argument. */
-  abstract Type getIndirectionType();
-}
-
-/**
- * The IR translation of an argument side effect where the argument has an `Expr` object in the AST.
- *
- * This generally applies to all positional arguments, as well as qualifier (`this`) arguments for
- * calls other than constructor calls.
- */
-class TranslatedArgumentExprSideEffect extends TranslatedArgumentSideEffect,
-  TTranslatedArgumentExprSideEffect {
-  Expr arg;
-
-  TranslatedArgumentExprSideEffect() {
-    this = TTranslatedArgumentExprSideEffect(call, arg, index, sideEffectOpcode)
-  }
-
-  final override Locatable getAST() { result = arg }
-
-  final override Type getIndirectionType() {
-    result = arg.getUnspecifiedType().(DerivedType).getBaseType()
-    or
-    // Sometimes the qualifier type gets the type of the class itself, rather than a pointer to the
-    // class.
-    index = -1 and
-    not arg.getUnspecifiedType() instanceof DerivedType and
-    result = arg.getUnspecifiedType()
-  }
-
-  final override string getArgString() { result = arg.toString() }
-
-  final override Instruction getArgInstruction() { result = getTranslatedExpr(arg).getResult() }
-}
-
-/**
- * The IR translation of an argument side effect for `*this` on a call, where there is no `Expr`
- * object that represents the `this` argument.
- *
- * The applies only to constructor calls, as the AST has explioit qualifier `Expr`s for all other
- * calls to non-static member functions.
- */
-class TranslatedStructorQualifierSideEffect extends TranslatedArgumentSideEffect,
-  TTranslatedStructorQualifierSideEffect {
-  TranslatedStructorQualifierSideEffect() {
-    this = TTranslatedStructorQualifierSideEffect(call, sideEffectOpcode) and
-    index = -1
-  }
-
-  final override Locatable getAST() { result = call }
-
-  final override Type getIndirectionType() { result = call.getTarget().getDeclaringType() }
-
-  final override string getArgString() { result = "this" }
-
-  final override Instruction getArgInstruction() {
-    exists(TranslatedStructorCall structorCall |
-      structorCall.getExpr() = call and
-      result = structorCall.getQualifierResult()
-    )
-  }
-}
-
-/** The IR translation of the non-argument-specific side effect of a call. */
-class TranslatedCallSideEffect extends TranslatedSideEffect, TTranslatedCallSideEffect {
-  Expr expr;
-  SideEffectOpcode sideEffectOpcode;
-
-  TranslatedCallSideEffect() { this = TTranslatedCallSideEffect(expr, sideEffectOpcode) }
-
-  override Locatable getAST() { result = expr }
-
-  override Expr getPrimaryExpr() { result = expr }
-
-  override predicate sortOrder(int group, int indexInGroup) {
-    group = callSideEffectGroup() and indexInGroup = 0
-  }
-
-  override string toString() { result = "(call side effect for '" + expr.toString() + "')" }
-
-  override predicate sideEffectInstruction(Opcode opcode, CppType type) {
-    opcode = sideEffectOpcode and
-    (
-      opcode instanceof Opcode::CallSideEffect and
-      type = getUnknownType()
-      or
-      opcode instanceof Opcode::CallReadSideEffect and
-      type = getVoidType()
-    )
-  }
-
-  override CppType getInstructionMemoryOperandType(InstructionTag tag, TypedOperandTag operandTag) {
-    tag instanceof OnlyInstructionTag and
-    operandTag instanceof SideEffectOperandTag and
-    result = getUnknownType()
-  }
-}
-
-/**
- * The IR translation of the allocation side effect of a call to a memory allocation function.
- *
- * This side effect provides a definition for the newly-allocated memory.
- */
-class TranslatedAllocationSideEffect extends TranslatedSideEffect, TTranslatedAllocationSideEffect {
-  AllocationExpr expr;
-
-  TranslatedAllocationSideEffect() { this = TTranslatedAllocationSideEffect(expr) }
-
-  override Locatable getAST() { result = expr }
-
-  override Expr getPrimaryExpr() { result = expr }
-
-  override predicate sortOrder(int group, int indexInGroup) {
-    group = initializeAllocationGroup() and indexInGroup = 0
-  }
-
-  override string toString() { result = "(allocation side effect for '" + expr.toString() + "')" }
-
-  override Instruction getInstructionRegisterOperand(InstructionTag tag, OperandTag operandTag) {
-    tag = OnlyInstructionTag() and
-    operandTag = addressOperand() and
-    result = getPrimaryInstructionForSideEffect(OnlyInstructionTag())
-  }
-
-  override predicate sideEffectInstruction(Opcode opcode, CppType type) {
-    opcode instanceof Opcode::InitializeDynamicAllocation and
-    type = getUnknownType()
-  }
+  /**
+   * Gets the `Function` containing this expression.
+   */
+  override Function getFunction() { result = arg.getEnclosingFunction() }
 }

cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/TranslatedElement.qll

@@ -135,20 +135,6 @@ private predicate ignoreExpr(Expr expr) {
   ignoreExprAndDescendants(expr)
 }
 
-/**
- * Holds if the side effects of `expr` should be ignoredf for the purposes of IR generation.
- *
- * In cases involving `constexpr`, a call can wind up as a constant expression. `ignoreExpr()` will
- * not hold for such a call, since we do need to translate the call (as a constant), but we need to
- * ignore all of the side effects of that call, since we will not actually be generating a `Call`
- * instruction.
- */
-private predicate ignoreSideEffects(Expr expr) {
-  ignoreExpr(expr)
-  or
-  isIRConstant(expr)
-}
-
 /**
  * Holds if `func` contains an AST that cannot be translated into IR. This is mostly used to work
  * around extractor bugs. Once the relevant extractor bugs are fixed, this predicate can be removed.
@@ -635,34 +621,32 @@ newtype TTranslatedElement =
   // The declaration/initialization part of a `ConditionDeclExpr`
   TTranslatedConditionDecl(ConditionDeclExpr expr) { not ignoreExpr(expr) } or
   // The side effects of a `Call`
-  TTranslatedCallSideEffects(CallOrAllocationExpr expr) { not ignoreSideEffects(expr) } or
-  // The non-argument-specific side effect of a `Call`
-  TTranslatedCallSideEffect(Expr expr, SideEffectOpcode opcode) {
-    not ignoreSideEffects(expr) and
-    opcode = getCallSideEffectOpcode(expr)
+  TTranslatedCallSideEffects(Call expr) {
+    // Exclude allocations such as `malloc` (which happen to also be function calls).
+    // Both `TranslatedCallSideEffects` and `TranslatedAllocationSideEffects` generate
+    // the same side effects for its children as they both extend the `TranslatedSideEffects`
+    // class.
+    // Note: We can separate allocation side effects and call side effects into two
+    // translated elements as no call can be both a `ConstructorCall` and an `AllocationExpr`.
+    not expr instanceof AllocationExpr and
+    (
+      exists(TTranslatedArgumentSideEffect(expr, _, _, _)) or
+      expr instanceof ConstructorCall
+    )
   } or
+  // The side effects of an allocation, i.e. `new`, `new[]` or `malloc`
+  TTranslatedAllocationSideEffects(AllocationExpr expr) { not ignoreExpr(expr) } or
   // A precise side effect of an argument to a `Call`
-  TTranslatedArgumentExprSideEffect(Call call, Expr expr, int n, SideEffectOpcode opcode) {
+  TTranslatedArgumentSideEffect(Call call, Expr expr, int n, SideEffectOpcode opcode) {
     not ignoreExpr(expr) and
-    not ignoreSideEffects(call) and
+    not ignoreExpr(call) and
     (
       n >= 0 and expr = call.getArgument(n).getFullyConverted()
       or
       n = -1 and expr = call.getQualifier().getFullyConverted()
     ) and
     opcode = getASideEffectOpcode(call, n)
-  } or
-  // Constructor calls lack a qualifier (`this`) expression, so we need to handle the side effects
-  // on `*this` without an `Expr`.
-  TTranslatedStructorQualifierSideEffect(Call call, SideEffectOpcode opcode) {
-    not ignoreSideEffects(call) and
-    // Don't bother with destructor calls for now, since we won't see very many of them in the IR
-    // until we start injecting implicit destructor calls.
-    call instanceof ConstructorCall and
-    opcode = getASideEffectOpcode(call, -1)
-  } or
-  // The side effect that initializes newly-allocated memory.
-  TTranslatedAllocationSideEffect(AllocationExpr expr) { not ignoreSideEffects(expr) }
+  }
 
 /**
  * Gets the index of the first explicitly initialized element in `initList`

cpp/ql/lib/semmle/code/cpp/metrics/MetricClass.qll

@@ -308,45 +308,45 @@ class MetricClass extends Class {
   }
 
   private string getAUsedHalsteadN1Operator() {
-    this.getAnEnclosedExpression() instanceof CommaExpr and result = "comma"
+    exists(CommaExpr e | e = this.getAnEnclosedExpression()) and result = "comma"
     or
-    this.getAnEnclosedExpression() instanceof ReferenceToExpr and result = "refTo"
+    exists(ReferenceToExpr e | e = this.getAnEnclosedExpression()) and result = "refTo"
     or
-    this.getAnEnclosedExpression() instanceof PointerDereferenceExpr and result = "dereference"
+    exists(PointerDereferenceExpr e | e = this.getAnEnclosedExpression()) and result = "dereference"
     or
-    this.getAnEnclosedExpression() instanceof CStyleCast and result = "cCast"
+    exists(CStyleCast e | e = this.getAnEnclosedExpression()) and result = "cCast"
     or
-    this.getAnEnclosedExpression() instanceof StaticCast and result = "staticCast"
+    exists(StaticCast e | e = this.getAnEnclosedExpression()) and result = "staticCast"
     or
-    this.getAnEnclosedExpression() instanceof ConstCast and result = "constCast"
+    exists(ConstCast e | e = this.getAnEnclosedExpression()) and result = "constCast"
     or
-    this.getAnEnclosedExpression() instanceof ReinterpretCast and result = "reinterpretCast"
+    exists(ReinterpretCast e | e = this.getAnEnclosedExpression()) and result = "reinterpretCast"
     or
-    this.getAnEnclosedExpression() instanceof DynamicCast and result = "dynamicCast"
+    exists(DynamicCast e | e = this.getAnEnclosedExpression()) and result = "dynamicCast"
     or
-    this.getAnEnclosedExpression() instanceof SizeofExprOperator and result = "sizeofExpr"
+    exists(SizeofExprOperator e | e = this.getAnEnclosedExpression()) and result = "sizeofExpr"
     or
-    this.getAnEnclosedExpression() instanceof SizeofTypeOperator and result = "sizeofType"
+    exists(SizeofTypeOperator e | e = this.getAnEnclosedExpression()) and result = "sizeofType"
     or
-    this.getAnEnclosedStmt() instanceof IfStmt and result = "ifVal"
+    exists(IfStmt e | e = this.getAnEnclosedStmt()) and result = "ifVal"
     or
-    this.getAnEnclosedStmt() instanceof SwitchStmt and result = "switchVal"
+    exists(SwitchStmt e | e = this.getAnEnclosedStmt()) and result = "switchVal"
     or
-    this.getAnEnclosedStmt() instanceof ForStmt and result = "forVal"
+    exists(ForStmt e | e = this.getAnEnclosedStmt()) and result = "forVal"
     or
-    this.getAnEnclosedStmt() instanceof DoStmt and result = "doVal"
+    exists(DoStmt e | e = this.getAnEnclosedStmt()) and result = "doVal"
     or
-    this.getAnEnclosedStmt() instanceof WhileStmt and result = "whileVal"
+    exists(WhileStmt e | e = this.getAnEnclosedStmt()) and result = "whileVal"
     or
-    this.getAnEnclosedStmt() instanceof GotoStmt and result = "gotoVal"
+    exists(GotoStmt e | e = this.getAnEnclosedStmt()) and result = "gotoVal"
     or
-    this.getAnEnclosedStmt() instanceof ContinueStmt and result = "continueVal"
+    exists(ContinueStmt e | e = this.getAnEnclosedStmt()) and result = "continueVal"
     or
-    this.getAnEnclosedStmt() instanceof BreakStmt and result = "breakVal"
+    exists(BreakStmt e | e = this.getAnEnclosedStmt()) and result = "breakVal"
     or
-    this.getAnEnclosedStmt() instanceof ReturnStmt and result = "returnVal"
+    exists(ReturnStmt e | e = this.getAnEnclosedStmt()) and result = "returnVal"
     or
-    this.getAnEnclosedStmt() instanceof SwitchCase and result = "caseVal"
+    exists(SwitchCase e | e = this.getAnEnclosedStmt()) and result = "caseVal"
     or
     exists(IfStmt s | s = this.getAnEnclosedStmt() and s.hasElse()) and
     result = "elseVal"

cpp/ql/lib/semmle/code/cpp/models/implementations/Gets.qll

@@ -11,14 +11,15 @@ import semmle.code.cpp.models.interfaces.SideEffect
 import semmle.code.cpp.models.interfaces.FlowSource
 
 /**
- * The standard functions `fgets` and `fgetws`.
+ * The standard functions `gets` and `fgets`.
  */
-private class FgetsFunction extends DataFlowFunction, TaintFunction, ArrayFunction, AliasFunction,
+private class GetsFunction extends DataFlowFunction, TaintFunction, ArrayFunction, AliasFunction,
   SideEffectFunction, RemoteFlowSourceFunction {
-  FgetsFunction() {
+  GetsFunction() {
+    // gets(str)
     // fgets(str, num, stream)
     // fgetws(wstr, num, stream)
-    this.hasGlobalOrStdOrBslName(["fgets", "fgetws"])
+    this.hasGlobalOrStdOrBslName(["gets", "fgets", "fgetws"])
   }
 
   override predicate hasDataFlow(FunctionInput input, FunctionOutput output) {
@@ -50,61 +51,18 @@ private class FgetsFunction extends DataFlowFunction, TaintFunction, ArrayFuncti
   override predicate hasRemoteFlowSource(FunctionOutput output, string description) {
     output.isParameterDeref(0) and
     description = "String read by " + this.getName()
-    or
-    output.isReturnValue() and
-    description = "String read by " + this.getName()
   }
 
   override predicate hasArrayWithVariableSize(int bufParam, int countParam) {
+    not this.hasName("gets") and
     bufParam = 0 and
     countParam = 1
   }
 
-  override predicate hasArrayOutput(int bufParam) { bufParam = 0 }
-
-  override predicate hasSocketInput(FunctionInput input) { input.isParameterDeref(2) }
-}
-
-/**
- * The standard functions `gets`.
- */
-private class GetsFunction extends DataFlowFunction, ArrayFunction, AliasFunction,
-  SideEffectFunction, LocalFlowSourceFunction {
-  GetsFunction() {
-    // gets(str)
-    this.hasGlobalOrStdOrBslName("gets")
+  override predicate hasArrayWithUnknownSize(int bufParam) {
+    this.hasName("gets") and
+    bufParam = 0
   }
 
-  override predicate hasDataFlow(FunctionInput input, FunctionOutput output) {
-    input.isParameter(0) and
-    output.isReturnValue()
-  }
-
-  override predicate parameterNeverEscapes(int index) { none() }
-
-  override predicate parameterEscapesOnlyViaReturn(int index) { index = 0 }
-
-  override predicate parameterIsAlwaysReturned(int index) { index = 0 }
-
-  override predicate hasOnlySpecificReadSideEffects() { any() }
-
-  override predicate hasOnlySpecificWriteSideEffects() { any() }
-
-  override predicate hasSpecificWriteSideEffect(ParameterIndex i, boolean buffer, boolean mustWrite) {
-    i = 0 and
-    buffer = true and
-    mustWrite = true
-  }
-
-  override predicate hasLocalFlowSource(FunctionOutput output, string description) {
-    output.isParameterDeref(0) and
-    description = "String read by " + this.getName()
-    or
-    output.isReturnValue() and
-    description = "String read by " + this.getName()
-  }
-
-  override predicate hasArrayWithUnknownSize(int bufParam) { bufParam = 0 }
-
   override predicate hasArrayOutput(int bufParam) { bufParam = 0 }
 }

cpp/ql/lib/semmle/code/cpp/models/interfaces/FlowSource.qll

@@ -20,9 +20,8 @@ abstract class RemoteFlowSourceFunction extends Function {
   abstract predicate hasRemoteFlowSource(FunctionOutput output, string description);
 
   /**
-   * Holds if remote data from this source comes from a socket or stream
-   * described by `input`. There is no result if none is specified by a
-   * parameter.
+   * Holds if remote data from this source comes from a socket described by
+   * `input`. There is no result if a socket is not specified.
    */
   predicate hasSocketInput(FunctionInput input) { none() }
 }
@@ -60,9 +59,8 @@ abstract class RemoteFlowSinkFunction extends Function {
   abstract predicate hasRemoteFlowSink(FunctionInput input, string description);
 
   /**
-   * Holds if data put into this sink is transmitted through a socket or stream
-   * described by `input`. There is no result if none is specified by a
-   * parameter.
+   * Holds if data put into this sink is transmitted through a socket described
+   * by `input`. There is no result if a socket is not specified.
    */
   predicate hasSocketInput(FunctionInput input) { none() }
 }

cpp/ql/lib/semmle/code/cpp/padding/Padding.qll

@@ -397,7 +397,7 @@ class PaddedType extends Class {
     // Support only single inheritance for now. If multiple inheritance is
     // supported, be sure to fix up the calls to getABaseClass*() to correctly
     // handle the presence of multiple base class subojects with the same type.
-    not exists(this.getDerivation(1))
+    not exists(ClassDerivation cd | cd = this.getDerivation(1))
   }
 
   /**

cpp/ql/lib/semmle/code/cpp/pointsto/PointsTo.qll

@@ -72,7 +72,7 @@ predicate lvalue(Element e) {
   or
   exists(Cast c | lvalue(c) and e.(Expr).getConversion() = c)
   or
-  e.(Expr).getConversion() instanceof ReferenceToExpr
+  exists(ReferenceToExpr toref | e.(Expr).getConversion() = toref)
   or
   // If f is a function-pointer, then the following two
   // calls are equivalent:  f()  and  (*f)()

cpp/ql/lib/semmle/code/cpp/security/BufferWrite.qll

@@ -76,7 +76,7 @@ abstract class BufferWrite extends Expr {
    * can be found), specifying the reason for the estimation.
    */
   int getMaxData(BufferWriteEstimationReason reason) {
-    reason instanceof UnspecifiedEstimateReason and result = this.getMaxData()
+    reason instanceof UnspecifiedEstimateReason and result = getMaxData()
   }
 
   /**
@@ -85,7 +85,7 @@ abstract class BufferWrite extends Expr {
    * much smaller (8 bytes) than their true maximum length.  This can be
    * helpful in determining the cause of a buffer overflow issue.
    */
-  int getMaxDataLimited() { result = this.getMaxData() }
+  int getMaxDataLimited() { result = getMaxData() }
 
   /**
    * Gets an upper bound to the amount of data that's being written (if one
@@ -94,7 +94,7 @@ abstract class BufferWrite extends Expr {
    * than their true maximum length.  This can be helpful in determining the
    * cause of a buffer overflow issue.
    */
-  int getMaxDataLimited(BufferWriteEstimationReason reason) { result = this.getMaxData(reason) }
+  int getMaxDataLimited(BufferWriteEstimationReason reason) { result = getMaxData(reason) }
 
   /**
    * Gets the size of a single character of the type this
@@ -159,11 +159,9 @@ class StrCopyBW extends BufferWriteCall {
       this.getArgument(this.getParamSrc()).(AnalysedString).getMaxLength() * this.getCharSize()
   }
 
-  override int getMaxData(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataImpl(reason)
-  }
+  override int getMaxData(BufferWriteEstimationReason reason) { result = getMaxDataImpl(reason) }
 
-  override int getMaxData() { result = max(this.getMaxDataImpl(_)) }
+  override int getMaxData() { result = max(getMaxDataImpl(_)) }
 }
 
 /**
@@ -205,11 +203,9 @@ class StrCatBW extends BufferWriteCall {
       this.getArgument(this.getParamSrc()).(AnalysedString).getMaxLength() * this.getCharSize()
   }
 
-  override int getMaxData(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataImpl(reason)
-  }
+  override int getMaxData(BufferWriteEstimationReason reason) { result = getMaxDataImpl(reason) }
 
-  override int getMaxData() { result = max(this.getMaxDataImpl(_)) }
+  override int getMaxData() { result = max(getMaxDataImpl(_)) }
 }
 
 /**
@@ -273,11 +269,9 @@ class SprintfBW extends BufferWriteCall {
     )
   }
 
-  override int getMaxData(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataImpl(reason)
-  }
+  override int getMaxData(BufferWriteEstimationReason reason) { result = getMaxDataImpl(reason) }
 
-  override int getMaxData() { result = max(this.getMaxDataImpl(_)) }
+  override int getMaxData() { result = max(getMaxDataImpl(_)) }
 
   private int getMaxDataLimitedImpl(BufferWriteEstimationReason reason) {
     exists(FormatLiteral fl |
@@ -287,10 +281,10 @@ class SprintfBW extends BufferWriteCall {
   }
 
   override int getMaxDataLimited(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataLimitedImpl(reason)
+    result = getMaxDataLimitedImpl(reason)
   }
 
-  override int getMaxDataLimited() { result = max(this.getMaxDataLimitedImpl(_)) }
+  override int getMaxDataLimited() { result = max(getMaxDataLimitedImpl(_)) }
 }
 
 /**
@@ -388,11 +382,9 @@ class SnprintfBW extends BufferWriteCall {
     )
   }
 
-  override int getMaxData(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataImpl(reason)
-  }
+  override int getMaxData(BufferWriteEstimationReason reason) { result = getMaxDataImpl(reason) }
 
-  override int getMaxData() { result = max(this.getMaxDataImpl(_)) }
+  override int getMaxData() { result = max(getMaxDataImpl(_)) }
 
   private int getMaxDataLimitedImpl(BufferWriteEstimationReason reason) {
     exists(FormatLiteral fl |
@@ -402,10 +394,10 @@ class SnprintfBW extends BufferWriteCall {
   }
 
   override int getMaxDataLimited(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataLimitedImpl(reason)
+    result = getMaxDataLimitedImpl(reason)
   }
 
-  override int getMaxDataLimited() { result = max(this.getMaxDataLimitedImpl(_)) }
+  override int getMaxDataLimited() { result = max(getMaxDataLimitedImpl(_)) }
 }
 
 /**
@@ -503,11 +495,9 @@ class ScanfBW extends BufferWrite {
     )
   }
 
-  override int getMaxData(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataImpl(reason)
-  }
+  override int getMaxData(BufferWriteEstimationReason reason) { result = getMaxDataImpl(reason) }
 
-  override int getMaxData() { result = max(this.getMaxDataImpl(_)) }
+  override int getMaxData() { result = max(getMaxDataImpl(_)) }
 
   override string getBWDesc() {
     exists(FunctionCall fc |
@@ -546,9 +536,7 @@ class RealpathBW extends BufferWriteCall {
     this = this // Suppress a compiler warning
   }
 
-  override int getMaxData(BufferWriteEstimationReason reason) {
-    result = this.getMaxDataImpl(reason)
-  }
+  override int getMaxData(BufferWriteEstimationReason reason) { result = getMaxDataImpl(reason) }
 
-  override int getMaxData() { result = max(this.getMaxDataImpl(_)) }
+  override int getMaxData() { result = max(getMaxDataImpl(_)) }
 }

cpp/ql/lib/semmle/code/cpp/security/TaintTracking.qll

@@ -1,10 +1,7 @@
 /*
- * Support for tracking tainted data through the program. This is an alias for
- * `semmle.code.cpp.ir.dataflow.DefaultTaintTracking` provided for backwards
- * compatibility.
+ * Support for tracking tainted data through the program.
  *
- * Prefer to use `semmle.code.cpp.dataflow.TaintTracking` or
- * `semmle.code.cpp.ir.dataflow.TaintTracking` when designing new queries.
+ * Prefer to use `semmle.code.cpp.dataflow.TaintTracking` when designing new queries.
  */
 
 import semmle.code.cpp.ir.dataflow.DefaultTaintTracking

cpp/ql/lib/semmle/code/cpp/security/TaintTrackingImpl.qll

@@ -258,7 +258,7 @@ private predicate insideFunctionValueMoveTo(Element src, Element dest) {
           format.getConversionChar(sourceArg - ffc.getTarget().getNumberOfParameters()) = ["s", "S"]
         )
         or
-        not c.(FormattingFunctionCall).getFormat() instanceof FormatLiteral
+        not exists(FormatLiteral fl | fl = c.(FormattingFunctionCall).getFormat())
         or
         not c instanceof FormattingFunctionCall
       ) and

cpp/ql/lib/semmle/code/cpp/stmts/Stmt.qll

@@ -271,7 +271,7 @@ class IfStmt extends ConditionalStmt, @stmt_if {
    * if (b) { x = 1; }
    * ```
    */
-  predicate hasElse() { exists(this.getElse()) }
+  predicate hasElse() { exists(Stmt s | this.getElse() = s) }
 
   override string toString() { result = "if (...) ... " }
 
@@ -357,7 +357,7 @@ class ConstexprIfStmt extends ConditionalStmt, @stmt_constexpr_if {
    * if constexpr (b) { x = 1; }
    * ```
    */
-  predicate hasElse() { exists(this.getElse()) }
+  predicate hasElse() { exists(Stmt s | this.getElse() = s) }
 
   override string toString() { result = "if constexpr (...) ... " }
 

cpp/ql/lib/tutorial.qll

@@ -6,22 +6,122 @@
  */
 class Person extends string {
   Person() {
-    this =
-      [
-        "Ronil", "Dina", "Ravi", "Bruce", "Jo", "Aida", "Esme", "Charlie", "Fred", "Meera", "Maya",
-        "Chad", "Tiana", "Laura", "George", "Will", "Mary", "Almira", "Susannah", "Rhoda",
-        "Cynthia", "Eunice", "Olive", "Virginia", "Angeline", "Helen", "Cornelia", "Harriet",
-        "Mahala", "Abby", "Margaret", "Deb", "Minerva", "Severus", "Lavina", "Adeline", "Cath",
-        "Elisa", "Lucretia", "Anne", "Eleanor", "Joanna", "Adam", "Agnes", "Rosanna", "Clara",
-        "Melissa", "Amy", "Isabel", "Jemima", "Cordelia", "Melinda", "Delila", "Jeremiah", "Elijah",
-        "Hester", "Walter", "Oliver", "Hugh", "Aaron", "Reuben", "Eli", "Amos", "Augustus",
-        "Theodore", "Ira", "Timothy", "Cyrus", "Horace", "Simon", "Asa", "Frank", "Nelson",
-        "Leonard", "Harrison", "Anthony", "Louis", "Milton", "Noah", "Cornelius", "Abdul", "Warren",
-        "Harvey", "Dennis", "Wesley", "Sylvester", "Gilbert", "Sullivan", "Edmund", "Wilson",
-        "Perry", "Matthew", "Simba", "Nala", "Rafiki", "Shenzi", "Ernest", "Gertrude", "Oscar",
-        "Lilian", "Raymond", "Elgar", "Elmer", "Herbert", "Maude", "Mae", "Otto", "Edwin",
-        "Ophelia", "Parsley", "Sage", "Rosemary", "Thyme", "Garfunkel", "King Basil", "Stephen"
-      ]
+    this = "Ronil" or
+    this = "Dina" or
+    this = "Ravi" or
+    this = "Bruce" or
+    this = "Jo" or
+    this = "Aida" or
+    this = "Esme" or
+    this = "Charlie" or
+    this = "Fred" or
+    this = "Meera" or
+    this = "Maya" or
+    this = "Chad" or
+    this = "Tiana" or
+    this = "Laura" or
+    this = "George" or
+    this = "Will" or
+    this = "Mary" or
+    this = "Almira" or
+    this = "Susannah" or
+    this = "Rhoda" or
+    this = "Cynthia" or
+    this = "Eunice" or
+    this = "Olive" or
+    this = "Virginia" or
+    this = "Angeline" or
+    this = "Helen" or
+    this = "Cornelia" or
+    this = "Harriet" or
+    this = "Mahala" or
+    this = "Abby" or
+    this = "Margaret" or
+    this = "Deb" or
+    this = "Minerva" or
+    this = "Severus" or
+    this = "Lavina" or
+    this = "Adeline" or
+    this = "Cath" or
+    this = "Elisa" or
+    this = "Lucretia" or
+    this = "Anne" or
+    this = "Eleanor" or
+    this = "Joanna" or
+    this = "Adam" or
+    this = "Agnes" or
+    this = "Rosanna" or
+    this = "Clara" or
+    this = "Melissa" or
+    this = "Amy" or
+    this = "Isabel" or
+    this = "Jemima" or
+    this = "Cordelia" or
+    this = "Melinda" or
+    this = "Delila" or
+    this = "Jeremiah" or
+    this = "Elijah" or
+    this = "Hester" or
+    this = "Walter" or
+    this = "Oliver" or
+    this = "Hugh" or
+    this = "Aaron" or
+    this = "Reuben" or
+    this = "Eli" or
+    this = "Amos" or
+    this = "Augustus" or
+    this = "Theodore" or
+    this = "Ira" or
+    this = "Timothy" or
+    this = "Cyrus" or
+    this = "Horace" or
+    this = "Simon" or
+    this = "Asa" or
+    this = "Frank" or
+    this = "Nelson" or
+    this = "Leonard" or
+    this = "Harrison" or
+    this = "Anthony" or
+    this = "Louis" or
+    this = "Milton" or
+    this = "Noah" or
+    this = "Cornelius" or
+    this = "Abdul" or
+    this = "Warren" or
+    this = "Harvey" or
+    this = "Dennis" or
+    this = "Wesley" or
+    this = "Sylvester" or
+    this = "Gilbert" or
+    this = "Sullivan" or
+    this = "Edmund" or
+    this = "Wilson" or
+    this = "Perry" or
+    this = "Matthew" or
+    this = "Simba" or
+    this = "Nala" or
+    this = "Rafiki" or
+    this = "Shenzi" or
+    this = "Ernest" or
+    this = "Gertrude" or
+    this = "Oscar" or
+    this = "Lilian" or
+    this = "Raymond" or
+    this = "Elgar" or
+    this = "Elmer" or
+    this = "Herbert" or
+    this = "Maude" or
+    this = "Mae" or
+    this = "Otto" or
+    this = "Edwin" or
+    this = "Ophelia" or
+    this = "Parsley" or
+    this = "Sage" or
+    this = "Rosemary" or
+    this = "Thyme" or
+    this = "Garfunkel" or
+    this = "King Basil" or
+    this = "Stephen"
   }
 
   /** Gets the hair color of the person. If the person is bald, there is no result. */
@@ -836,12 +936,25 @@ class Person extends string {
 
   /** Holds if the person is deceased. */
   predicate isDeceased() {
-    this =
-      [
-        "Ernest", "Gertrude", "Oscar", "Lilian", "Edwin", "Raymond", "Elgar", "Elmer", "Herbert",
-        "Maude", "Mae", "Otto", "Ophelia", "Parsley", "Sage", "Rosemary", "Thyme", "Garfunkel",
-        "King Basil"
-      ]
+    this = "Ernest" or
+    this = "Gertrude" or
+    this = "Oscar" or
+    this = "Lilian" or
+    this = "Edwin" or
+    this = "Raymond" or
+    this = "Elgar" or
+    this = "Elmer" or
+    this = "Herbert" or
+    this = "Maude" or
+    this = "Mae" or
+    this = "Otto" or
+    this = "Ophelia" or
+    this = "Parsley" or
+    this = "Sage" or
+    this = "Rosemary" or
+    this = "Thyme" or
+    this = "Garfunkel" or
+    this = "King Basil"
   }
 
   /** Gets a parent of the person (alive or deceased). */
@@ -1082,7 +1195,12 @@ class Person extends string {
   }
 
   /** Holds if the person is allowed in the region. Initially, all villagers are allowed in every region. */
-  predicate isAllowedIn(string region) { region = ["north", "south", "east", "west"] }
+  predicate isAllowedIn(string region) {
+    region = "north" or
+    region = "south" or
+    region = "east" or
+    region = "west"
+  }
 }
 
 /** Returns a parent of the person. */

cpp/ql/src/Best Practices/Hiding/DeclarationHidesVariable.ql

@@ -18,7 +18,6 @@ where
   not lv1.isCompilerGenerated() and
   not lv2.isCompilerGenerated() and
   not lv1.getParentScope().(BlockStmt).isInMacroExpansion() and
-  not lv2.getParentScope().(BlockStmt).isInMacroExpansion() and
-  not lv1.getName() = "(unnamed local variable)"
+  not lv2.getParentScope().(BlockStmt).isInMacroExpansion()
 select lv1, "Variable " + lv1.getName() + " hides another variable of the same name (on $@).", lv2,
   "line " + lv2.getLocation().getStartLine().toString()

cpp/ql/src/CHANGELOG.md

@@ -1,5 +1,3 @@
-## 0.0.7
-
 ## 0.0.6
 
 ## 0.0.5

cpp/ql/src/Critical/DeadCodeGoto.ql

@@ -30,8 +30,8 @@ where
   // the next statement isn't breaking out of a switch
   not s.(BreakStmt).getBreakable() instanceof SwitchStmt and
   // the next statement isn't a loop that can be jumped into
-  not s.(Loop).getStmt().getAChild*() instanceof LabelStmt and
-  not s.(Loop).getStmt().getAChild*() instanceof SwitchCase and
+  not exists(LabelStmt ls | s.(Loop).getStmt().getAChild*() = ls) and
+  not exists(SwitchCase sc | s.(Loop).getStmt().getAChild*() = sc) and
   // no preprocessor logic applies
   not functionContainsPreprocCode(js.getEnclosingFunction())
 select js, "This statement makes $@ unreachable.", s, s.toString()

cpp/ql/src/Likely Bugs/Leap Year/LeapYear.qll

@@ -55,7 +55,7 @@ abstract class LeapYearFieldAccess extends YearFieldAccess {
       op.getAnOperand() = this and
       (
         op instanceof AssignArithmeticOperation or
-        op.getAnOperand() instanceof BinaryArithmeticOperation or
+        exists(BinaryArithmeticOperation bao | bao = op.getAnOperand()) or
         op instanceof CrementOperation
       )
     )
@@ -212,7 +212,9 @@ class ChecksForLeapYearFunctionCall extends FunctionCall {
 class LeapYearCheckConfiguration extends DataFlow::Configuration {
   LeapYearCheckConfiguration() { this = "LeapYearCheckConfiguration" }
 
-  override predicate isSource(DataFlow::Node source) { source.asExpr() instanceof VariableAccess }
+  override predicate isSource(DataFlow::Node source) {
+    exists(VariableAccess va | va = source.asExpr())
+  }
 
   override predicate isSink(DataFlow::Node sink) {
     exists(ChecksForLeapYearFunctionCall fc | sink.asExpr() = fc.getAnArgument())

cpp/ql/src/Likely Bugs/Memory Management/ReturnStackAllocatedMemory.cpp

@@ -4,4 +4,4 @@ Record* fixRecord(Record* r) {
 
 	myRecord.fix();
 	return &myRecord; //returns reference to myRecord, which is a stack-allocated object
-}
+}

cpp/ql/src/Likely Bugs/Memory Management/ReturnStackAllocatedMemory.ql

@@ -3,169 +3,68 @@
  * @description A function returns a pointer to a stack-allocated region of
  *              memory. This memory is deallocated at the end of the function,
  *              which may lead the caller to dereference a dangling pointer.
- * @kind path-problem
+ * @kind problem
  * @id cpp/return-stack-allocated-memory
  * @problem.severity warning
- * @security-severity 9.3
  * @precision high
  * @tags reliability
- *       security
  *       external/cwe/cwe-825
  */
 
 import cpp
-import semmle.code.cpp.ir.IR
-import semmle.code.cpp.ir.dataflow.DataFlow::DataFlow
+import semmle.code.cpp.dataflow.EscapesTree
+import semmle.code.cpp.models.interfaces.PointerWrapper
+import semmle.code.cpp.dataflow.DataFlow
 
-/** Holds if `f` has a name that we intrepret as evidence of intentionally returning the value of the stack pointer. */
-predicate intentionallyReturnsStackPointer(Function f) {
-  f.getName().toLowerCase().matches(["%stack%", "%sp%"])
+/**
+ * Holds if `n1` may flow to `n2`, ignoring flow through fields because these
+ * are currently modeled as an overapproximation that assumes all objects may
+ * alias.
+ */
+predicate conservativeDataFlowStep(DataFlow::Node n1, DataFlow::Node n2) {
+  DataFlow::localFlowStep(n1, n2) and
+  not n2.asExpr() instanceof FieldAccess and
+  not hasNontrivialConversion(n2.asExpr())
 }
 
 /**
- * Holds if `source` is a node that represents the use of a stack variable
+ * Holds if `e` has a conversion that changes it from lvalue to pointer or
+ * back. As the data-flow library does not support conversions, we cannot track
+ * data flow through such expressions.
  */
-predicate isSource(Node source) {
-  exists(VariableAddressInstruction var, Function func |
-    var = source.asInstruction() and
-    func = var.getEnclosingFunction() and
-    var.getASTVariable() instanceof StackVariable and
-    // Pointer-to-member types aren't properly handled in the dbscheme.
-    not var.getResultType() instanceof PointerToMemberType and
-    // Rule out FPs caused by extraction errors.
-    not any(ErrorExpr e).getEnclosingFunction() = func and
-    not intentionallyReturnsStackPointer(func)
-  )
-}
-
-/**
- * Holds if `sink` is a node that represents the `StoreInstruction` that is subsequently used in
- * a `ReturnValueInstruction`. We use the `StoreInstruction` instead of the instruction that defines the
- * `ReturnValueInstruction`'s source value oprand because the former has better location information.
- */
-predicate isSink(Node sink) {
-  exists(StoreInstruction store |
-    store.getDestinationAddress().(VariableAddressInstruction).getIRVariable() instanceof
-      IRReturnVariable and
-    sink.asOperand() = store.getSourceValueOperand()
-  )
-}
-
-/** Holds if `node1` _must_ flow to `node2`. */
-predicate step(Node node1, Node node2) {
-  instructionToOperandStep(node1.asInstruction(), node2.asOperand())
-  or
-  operandToInstructionStep(node1.asOperand(), node2.asInstruction())
-}
-
-predicate instructionToOperandStep(Instruction instr, Operand operand) { operand.getDef() = instr }
-
-/**
- * Holds if `operand` flows to the result of `instr`.
- *
- * This predicate ignores flow through `PhiInstruction`s to create a 'must flow' relation. It also
- * intentionally conflates addresses of fields and their object, and pointer offsets with their
- * base pointer as this allows us to detect cases where an object's address flows to a return statement
- * via a field. For example:
- *
- * ```cpp
- * struct S { int x, y };
- * int* test() {
- *   S s;
- *   return &s.x; // BAD: &s.x is an address of a variable on the stack.
- * }
- * ```
- */
-predicate operandToInstructionStep(Operand operand, Instruction instr) {
-  instr.(CopyInstruction).getSourceValueOperand() = operand
-  or
-  instr.(ConvertInstruction).getUnaryOperand() = operand
-  or
-  instr.(CheckedConvertOrNullInstruction).getUnaryOperand() = operand
-  or
-  instr.(InheritanceConversionInstruction).getUnaryOperand() = operand
-  or
-  instr.(FieldAddressInstruction).getObjectAddressOperand() = operand
-  or
-  instr.(PointerOffsetInstruction).getLeftOperand() = operand
-}
-
-/** Holds if a source node flows to `n`. */
-predicate branchlessLocalFlow0(Node n) {
-  isSource(n)
-  or
-  exists(Node mid |
-    branchlessLocalFlow0(mid) and
-    step(mid, n)
-  )
-}
-
-/** Holds if `n` is reachable through some source node, and `n` also eventually reaches a sink. */
-predicate branchlessLocalFlow1(Node n) {
-  branchlessLocalFlow0(n) and
-  (
-    isSink(n)
+predicate hasNontrivialConversion(Expr e) {
+  e instanceof Conversion and
+  not (
+    e instanceof Cast
     or
-    exists(Node mid |
-      branchlessLocalFlow1(mid) and
-      step(n, mid)
+    e instanceof ParenthesisExpr
+  )
+  or
+  // A smart pointer can be stack-allocated while the data it points to is heap-allocated.
+  // So we exclude such "conversions" from this predicate.
+  e = any(PointerWrapper wrapper).getAnUnwrapperFunction().getACallToThisFunction()
+  or
+  hasNontrivialConversion(e.getConversion())
+}
+
+from StackVariable var, VariableAccess va, ReturnStmt r
+where
+  not var.getUnspecifiedType() instanceof ReferenceType and
+  not r.isFromUninstantiatedTemplate(_) and
+  va = var.getAnAccess() and
+  (
+    // To check if the address escapes directly from `e` in `return e`, we need
+    // to check the fully-converted `e` in case there are implicit
+    // array-to-pointer conversions or reference conversions.
+    variableAddressEscapesTree(va, r.getExpr().getFullyConverted())
+    or
+    // The data flow library doesn't support conversions, so here we check that
+    // the address escapes into some expression `pointerToLocal`, which flows
+    // in one or more steps to a returned expression.
+    exists(Expr pointerToLocal |
+      variableAddressEscapesTree(va, pointerToLocal.getFullyConverted()) and
+      not hasNontrivialConversion(pointerToLocal) and
+      conservativeDataFlowStep+(DataFlow::exprNode(pointerToLocal), DataFlow::exprNode(r.getExpr()))
     )
   )
-}
-
-newtype TLocalPathNode =
-  TLocalPathNodeMid(Node n) {
-    branchlessLocalFlow1(n) and
-    (
-      isSource(n) or
-      exists(LocalPathNodeMid mid | step(mid.getNode(), n))
-    )
-  }
-
-abstract class LocalPathNode extends TLocalPathNode {
-  Node n;
-
-  /** Gets the underlying node. */
-  Node getNode() { result = n }
-
-  /** Gets a textual representation of this node. */
-  string toString() { result = n.toString() }
-
-  /** Gets the location of this element. */
-  Location getLocation() { result = n.getLocation() }
-
-  /** Gets a successor `LocalPathNode`, if any. */
-  LocalPathNode getASuccessor() { step(this.getNode(), result.getNode()) }
-}
-
-class LocalPathNodeMid extends LocalPathNode, TLocalPathNodeMid {
-  LocalPathNodeMid() { this = TLocalPathNodeMid(n) }
-}
-
-class LocalPathNodeSink extends LocalPathNodeMid {
-  LocalPathNodeSink() { isSink(this.getNode()) }
-}
-
-/**
- * Holds if `source` is a source node, `sink` is a sink node, and there's flow
- * from `source` to `sink` using `step` relation.
- */
-predicate hasFlow(LocalPathNode source, LocalPathNodeSink sink) {
-  isSource(source.getNode()) and
-  source.getASuccessor+() = sink
-}
-
-predicate reach(LocalPathNode n) { n instanceof LocalPathNodeSink or reach(n.getASuccessor()) }
-
-query predicate edges(LocalPathNode a, LocalPathNode b) { a.getASuccessor() = b and reach(b) }
-
-query predicate nodes(LocalPathNode n, string key, string val) {
-  reach(n) and key = "semmle.label" and val = n.toString()
-}
-
-from LocalPathNode source, LocalPathNodeSink sink, VariableAddressInstruction var
-where
-  hasFlow(source, sink) and
-  source.getNode().asInstruction() = var
-select sink.getNode(), source, sink, "May return stack-allocated memory from $@.", var.getAST(),
-  var.getAST().toString()
+select r, "May return stack-allocated memory from $@.", va, va.toString()

cpp/ql/src/Security/CWE/CWE-311/CleartextBufferWrite.ql

@@ -12,33 +12,23 @@
  */
 
 import cpp
-import semmle.code.cpp.security.BufferWrite as BufferWrite
+import semmle.code.cpp.security.BufferWrite
+import semmle.code.cpp.security.TaintTracking
 import semmle.code.cpp.security.SensitiveExprs
-import semmle.code.cpp.security.FlowSources
-import semmle.code.cpp.ir.dataflow.TaintTracking
-import DataFlow::PathGraph
+import TaintedWithPath
 
-/**
- * Taint flow from user input to a buffer write.
- */
-class ToBufferConfiguration extends TaintTracking::Configuration {
-  ToBufferConfiguration() { this = "ToBufferConfiguration" }
-
-  override predicate isSource(DataFlow::Node source) { source instanceof FlowSource }
-
-  override predicate isSink(DataFlow::Node sink) {
-    exists(BufferWrite::BufferWrite w | w.getASource() = sink.asExpr())
-  }
+class Configuration extends TaintTrackingConfiguration {
+  override predicate isSink(Element tainted) { exists(BufferWrite w | w.getASource() = tainted) }
 }
 
 from
-  ToBufferConfiguration config, BufferWrite::BufferWrite w, DataFlow::PathNode sourceNode,
-  DataFlow::PathNode sinkNode, FlowSource source, SensitiveExpr dest
+  BufferWrite w, Expr taintedArg, Expr taintSource, PathNode sourceNode, PathNode sinkNode,
+  string taintCause, SensitiveExpr dest
 where
-  config.hasFlowPath(sourceNode, sinkNode) and
-  sourceNode.getNode() = source and
-  w.getASource() = sinkNode.getNode().asExpr() and
+  taintedWithPath(taintSource, taintedArg, sourceNode, sinkNode) and
+  isUserInput(taintSource, taintCause) and
+  w.getASource() = taintedArg and
   dest = w.getDest()
 select w, sourceNode, sinkNode,
-  "This write into buffer '" + dest.toString() + "' may contain unencrypted data from $@", source,
-  "user input (" + source.getSourceType() + ")"
+  "This write into buffer '" + dest.toString() + "' may contain unencrypted data from $@",
+  taintSource, "user input (" + taintCause + ")"

cpp/ql/src/Security/CWE/CWE-311/CleartextFileWrite.ql

@@ -2,7 +2,7 @@
  * @name Cleartext storage of sensitive information in file
  * @description Storing sensitive information in cleartext can expose it
  *              to an attacker.
- * @kind path-problem
+ * @kind problem
  * @problem.severity warning
  * @security-severity 7.5
  * @precision high
@@ -17,19 +17,6 @@ import semmle.code.cpp.security.SensitiveExprs
 import semmle.code.cpp.security.FileWrite
 import semmle.code.cpp.dataflow.DataFlow
 import semmle.code.cpp.valuenumbering.GlobalValueNumbering
-import semmle.code.cpp.dataflow.TaintTracking
-import DataFlow::PathGraph
-
-/**
- * Taint flow from a sensitive expression to a `FileWrite` sink.
- */
-class FromSensitiveConfiguration extends TaintTracking::Configuration {
-  FromSensitiveConfiguration() { this = "FromSensitiveConfiguration" }
-
-  override predicate isSource(DataFlow::Node source) { source.asExpr() instanceof SensitiveExpr }
-
-  override predicate isSink(DataFlow::Node sink) { any(FileWrite w).getASource() = sink.asExpr() }
-}
 
 /**
  * An operation on a filename.
@@ -56,18 +43,12 @@ predicate isFileName(GVN gvn) {
   )
 }
 
-from
-  FromSensitiveConfiguration config, SensitiveExpr source, DataFlow::PathNode sourceNode, Expr mid,
-  DataFlow::PathNode midNode, FileWrite w, Expr dest
+from FileWrite w, SensitiveExpr source, Expr mid, Expr dest
 where
-  config.hasFlowPath(sourceNode, midNode) and
-  sourceNode.getNode().asExpr() = source and
-  midNode.getNode().asExpr() = mid and
+  DataFlow::localFlow(DataFlow::exprNode(source), DataFlow::exprNode(mid)) and
   mid = w.getASource() and
   dest = w.getDest() and
-  not dest.(VariableAccess).getTarget().getName() = ["stdin", "stdout", "stderr"] and // exclude calls with standard streams
   not isFileName(globalValueNumber(source)) and // file names are not passwords
   not exists(string convChar | convChar = w.getSourceConvChar(mid) | not convChar = ["s", "S"]) // ignore things written with other conversion characters
-select w, sourceNode, midNode,
-  "This write into file '" + dest.toString() + "' may contain unencrypted data from $@", source,
-  "this source."
+select w, "This write into file '" + dest.toString() + "' may contain unencrypted data from $@",
+  source, "this source."

cpp/ql/src/Security/CWE/CWE-311/CleartextTransmission.ql

@@ -27,7 +27,6 @@ class SensitiveNode extends DataFlow::Node {
     this.asExpr() = any(SensitiveVariable sv).getInitializer().getExpr() or
     this.asExpr().(VariableAccess).getTarget() =
       any(SensitiveVariable sv).(GlobalOrNamespaceVariable) or
-    this.asExpr().(VariableAccess).getTarget() = any(SensitiveVariable v | v instanceof Field) or
     this.asUninitialized() instanceof SensitiveVariable or
     this.asParameter() instanceof SensitiveVariable or
     this.asExpr().(FunctionCall).getTarget() instanceof SensitiveFunction
@@ -59,10 +58,7 @@ class Send extends SendRecv instanceof RemoteFlowSinkFunction {
     call.getTarget() = this and
     exists(FunctionInput input, int arg |
       super.hasSocketInput(input) and
-      (
-        input.isParameter(arg) or
-        input.isParameterDeref(arg)
-      ) and
+      input.isParameter(arg) and
       result = call.getArgument(arg)
     )
   }
@@ -85,10 +81,7 @@ class Recv extends SendRecv instanceof RemoteFlowSourceFunction {
     call.getTarget() = this and
     exists(FunctionInput input, int arg |
       super.hasSocketInput(input) and
-      (
-        input.isParameter(arg) or
-        input.isParameterDeref(arg)
-      ) and
+      input.isParameter(arg) and
       result = call.getArgument(arg)
     )
   }
@@ -112,8 +105,8 @@ class Recv extends SendRecv instanceof RemoteFlowSourceFunction {
  * practice it usually isn't very important which query reports a result as
  * long as its reported exactly once.
  *
- * We do exclude function calls that specify an apparently constant socket,
- * which is likely to mean standard input, standard output or a similar channel.
+ * We do exclude function calls that specify a constant socket, which is
+ * likely to mean standard input, standard output or a similar channel.
  */
 abstract class NetworkSendRecv extends FunctionCall {
   SendRecv target;
@@ -132,13 +125,6 @@ abstract class NetworkSendRecv extends FunctionCall {
           v.getInitializer().getExpr() instanceof Literal and
           g = globalValueNumber(v.getAnAccess())
         )
-        or
-        // result of a function call with literal inputs (likely constant)
-        exists(FunctionCall fc |
-          forex(Expr arg | arg = fc.getAnArgument() | arg instanceof Literal) and
-          g = globalValueNumber(fc)
-        )
-        // (this is far from exhaustive)
       )
     )
   }
@@ -161,28 +147,18 @@ class NetworkRecv extends NetworkSendRecv {
 }
 
 /**
- * An expression that is an argument or return value from an encryption /
- * decryption call. This is quite inclusive to minimize false positives, for
- * example `SecureZeroMemory` is not an encryption routine but a clue that
- * encryption may be present.
+ * An expression that is an argument or return value from an encryption or
+ * decryption call.
  */
 class Encrypted extends Expr {
   Encrypted() {
     exists(FunctionCall fc |
-      fc.getTarget()
-          .getName()
-          .toLowerCase()
-          .regexpMatch(".*(crypt|encode|decode|hash|securezero).*") and
+      fc.getTarget().getName().toLowerCase().regexpMatch(".*(crypt|encode|decode).*") and
       (
         this = fc or
         this = fc.getAnArgument()
       )
     )
-    or
-    exists(Type t |
-      this.getType().refersTo(t) and
-      t.getName().toLowerCase().regexpMatch(".*(crypt|encode|decode|hash|securezero).*")
-    )
   }
 }
 

cpp/ql/src/Security/CWE/CWE-732/UnsafeDaclSecurityDescriptor.ql

@@ -34,7 +34,9 @@ class SetSecurityDescriptorDaclFunctionCall extends FunctionCall {
 class NullDaclConfig extends DataFlow::Configuration {
   NullDaclConfig() { this = "NullDaclConfig" }
 
-  override predicate isSource(DataFlow::Node source) { source.asExpr() instanceof NullValue }
+  override predicate isSource(DataFlow::Node source) {
+    exists(NullValue nullExpr | source.asExpr() = nullExpr)
+  }
 
   override predicate isSink(DataFlow::Node sink) {
     exists(SetSecurityDescriptorDaclFunctionCall call, VariableAccess val | val = sink.asExpr() |

cpp/ql/src/change-notes/2022-01-19-cleartext-transmission.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The "Cleartext transmission of sensitive information" (`cpp/cleartext-transmission`) query has been improved in several ways to reduce false positive results.

cpp/ql/src/change-notes/2022-01-20-return-stack-allocated-memory.md

@@ -1,5 +0,0 @@
----
-category: minorAnalysis
----
-* The `cpp/return-stack-allocated-memory` query has been improved to produce fewer false positives. The
-  query has also been converted to a `path-problem` query.

cpp/ql/src/change-notes/2022-01-22-cleartext-transmission.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The "Cleartext transmission of sensitive information" (`cpp/cleartext-transmission`) query now finds more results, where a password is stored in a struct field or class member variable.

cpp/ql/src/change-notes/2022-01-24-cleartext-storage-file.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The `cpp/cleartext-storage-file` query has been upgraded with non-local taint flow and has been converted to a `path-problem` query.

cpp/ql/src/change-notes/2022-01-24-return-stack-allocated-memory.md

@@ -1,4 +0,0 @@
----
-category: newQuery
----
-* The `security` tag has been added to the `cpp/return-stack-allocated-memory` query. As a result, its results will now appear by default.

cpp/ql/src/change-notes/2022-01-25-cleartext-storage-buffer.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The `cpp/cleartext-storage-buffer` query has been updated to use the `semmle.code.cpp.dataflow.TaintTracking` library.

cpp/ql/src/change-notes/2022-01-26-unnamed-variable-declaration-hiding.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* Fix an issue with the `cpp/declaration-hides-variable` query where it would report variables that are unnamed in a database.

cpp/ql/src/change-notes/2022-01-28-cleartext-storage-file.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The `cpp/cleartext-storage-file` query has been improved, removing false positives where data is written to a standard output stream.

cpp/ql/src/change-notes/released/0.0.7.md

@@ -1 +0,0 @@
-## 0.0.7

cpp/ql/src/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 0.0.7
+lastReleaseVersion: 0.0.6

cpp/ql/src/experimental/Best Practices/UselessTest.cpp

@@ -1,9 +0,0 @@
-void test(){
-    int a = 8;
-    int b = 9;
-
-    //Useless NonEquals
-    if(a==8 && a != 7) {}
-
-    while(a==8 && a!=7){}
-}

cpp/ql/src/experimental/Best Practices/UselessTest.qhelp

@@ -1,18 +0,0 @@
-<!DOCTYPE qhelp PUBLIC
-  "-//Semmle//qhelp//EN"
-  "qhelp.dtd">
-<qhelp>
-
-<overview>
-<p>Comparison operations like <code>a==8 &amp;&amp; a!=7</code> contain a useless part : the non-equal part. This rule finds tests of this kind within an <code>if</code> or a <code>while</code> statement</p>
-</overview>
-
-<recommendation>
-<p>Remove the useless comparisons</p>
-</recommendation>
-
-<example>
-<sample src="UselessTest.cpp" />
-</example>
-
-</qhelp>

cpp/ql/src/experimental/Best Practices/UselessTest.ql

@@ -1,43 +0,0 @@
-/**
- * @name Useless Test
- * @description A boolean condition that is guaranteed to never be evaluated should be deleted.
- * @kind problem
- * @problem.severity warning
- * @id cpp/uselesstest
- * @tags reliability
- *       readability
- */
-
-import cpp
-import semmle.code.cpp.valuenumbering.GlobalValueNumbering
-
-predicate sameExpr(Expr e1, Expr e2) { globalValueNumber(e1).getAnExpr() = e2 }
-
-Element nearestParent(Expr e) {
-  if
-    e.getParent().(Expr).getConversion*() instanceof ParenthesisExpr or
-    e.getParent() instanceof IfStmt or
-    e.getParent() instanceof WhileStmt
-  then result = e.getParent()
-  else result = nearestParent(e.getParent())
-}
-
-from LogicalAndExpr b, EQExpr eq, NEExpr ne
-where
-  (
-    b.getAChild*() = eq and
-    b.getAChild*() = ne and
-    eq.getParent() instanceof LogicalAndExpr and
-    ne.getParent() instanceof LogicalAndExpr
-  ) and
-  (
-    eq.getLeftOperand() instanceof VariableAccess and ne.getLeftOperand() instanceof VariableAccess
-    or
-    eq.getLeftOperand() instanceof PointerDereferenceExpr and
-    ne.getLeftOperand() instanceof PointerDereferenceExpr
-  ) and
-  eq.getRightOperand() instanceof Literal and
-  ne.getRightOperand() instanceof Literal and
-  nearestParent(eq) = nearestParent(ne) and
-  sameExpr(eq.getLeftOperand(), ne.getLeftOperand())
-select ne, "Useless Test"

cpp/ql/src/experimental/Security/CWE/CWE-1041/FindWrapperFunctions.ql

@@ -24,10 +24,10 @@ class CallUsedToHandleErrors extends FunctionCall {
     not exists(this.(ControlFlowNode).getASuccessor())
     or
     // call throwing an exception
-    this.(ControlFlowNode).getASuccessor() instanceof ThrowExpr
+    exists(ThrowExpr tex | tex = this.(ControlFlowNode).getASuccessor())
     or
     // call logging a message, possibly an error
-    this.(ControlFlowNode).getASuccessor() instanceof FormattingFunction
+    exists(FormattingFunction ff | ff = this.(ControlFlowNode).getASuccessor())
     or
     // enabling recursive search
     exists(CallUsedToHandleErrors fr | getTarget() = fr.getEnclosingFunction())
@@ -37,9 +37,9 @@ class CallUsedToHandleErrors extends FunctionCall {
 /** Holds if the conditions for a call outside the wrapper function are met. */
 predicate conditionsOutsideWrapper(FunctionCall fcp) {
   fcp.getNumberOfArguments() > 0 and
-  not fcp.getEnclosingStmt().getParentStmt*() instanceof ConditionalStmt and
-  not fcp.getEnclosingStmt().getParentStmt*() instanceof Loop and
-  not fcp.getEnclosingStmt().getParentStmt*() instanceof ReturnStmt and
+  not exists(ConditionalStmt cdtmp | fcp.getEnclosingStmt().getParentStmt*() = cdtmp) and
+  not exists(Loop lptmp | fcp.getEnclosingStmt().getParentStmt*() = lptmp) and
+  not exists(ReturnStmt rttmp | fcp.getEnclosingStmt().getParentStmt*() = rttmp) and
   not exists(FunctionCall fctmp2 | fcp = fctmp2.getAnArgument().getAChild*()) and
   not exists(Assignment astmp | fcp = astmp.getRValue().getAChild*()) and
   not exists(Initializer intmp | fcp = intmp.getExpr().getAChild*()) and

cpp/ql/src/experimental/Security/CWE/CWE-377/InsecureTemporaryFile.ql

@@ -92,7 +92,7 @@ where
     ) and
     exists(Variable vrtmp |
       vrtmp = fc.getArgument(0).(VariableAccess).getTarget() and
-      vrtmp = fctmp.getArgument(0).(AddressOfExpr).getAddressable() and
+      vrtmp = fctmp.getArgument(0).(AddressOfExpr).getAddressable().(Variable) and
       not vrtmp instanceof Field
     )
   ) and

cpp/ql/src/experimental/Security/CWE/CWE-675/DoubleRelease.ql

@@ -26,7 +26,7 @@ class CallMayNotReturn extends FunctionCall {
     // call to another function that may not return
     exists(CallMayNotReturn exit | getTarget() = exit.getEnclosingFunction())
     or
-    this.(ControlFlowNode).getASuccessor() instanceof ThrowExpr
+    exists(ThrowExpr tex | tex = this.(ControlFlowNode).getASuccessor())
   }
 }
 
@@ -127,7 +127,7 @@ predicate similarArguments(FunctionCall fc, FunctionCall fc1) {
 
 from FunctionCall fc, FunctionCall fc1
 where
-  not fc.getASuccessor*() instanceof CallMayNotReturn and
+  not exists(CallMayNotReturn fctmp | fctmp = fc.getASuccessor*()) and
   not exists(IfStmt ifs | ifs.getCondition().getAChild*() = fc) and
   (
     // detecting a repeated call situation within one function

cpp/ql/src/jsf/4.10 Classes/AV Rule 97.1.ql

@@ -15,6 +15,6 @@ from EqualityOperation e, PointerToMemberType t, Class c
 where
   e.getAnOperand().getType() = t and
   t.getClass() = c and
-  c.getAMemberFunction() instanceof VirtualFunction
+  exists(VirtualFunction f | c.getAMemberFunction() = f)
 select e,
   "AV Rule 97.1: Neither operand of an equality operator shall be a pointer to a virtual member function."

cpp/ql/src/qlpack.yml

@@ -1,8 +1,6 @@
 name: codeql/cpp-queries
-version: 0.0.8-dev
-groups: 
-  - cpp
-  - queries
+version: 0.0.7-dev
+groups: cpp
 dependencies:
     codeql/cpp-all: "*"
     codeql/suite-helpers: "*"

cpp/ql/test/TestUtilities/InlineExpectationsTest.qll

@@ -93,7 +93,7 @@
 private import InlineExpectationsTestPrivate
 
 /**
- * The base class for tests with inline expectations. The test extends this class to provide the actual
+ * Base class for tests with inline expectations. The test extends this class to provide the actual
  * results of the query, which are then compared with the expected results in comments to produce a
  * list of failure messages that point out where the actual results differ from the expected
  * results.

cpp/ql/test/library-tests/ir/ir/operand_locations.expected

@@ -2665,7 +2665,7 @@
 | ir.cpp:617:15:617:21 | Unary | r617_4 |
 | ir.cpp:617:15:617:22 | CallTarget | func:r617_3 |
 | ir.cpp:617:15:617:22 | ChiPartial | partial:m617_7 |
-| ir.cpp:617:15:617:22 | ChiPartial | partial:m617_10 |
+| ir.cpp:617:15:617:22 | ChiPartial | partial:m617_9 |
 | ir.cpp:617:15:617:22 | ChiTotal | total:m616_6 |
 | ir.cpp:617:15:617:22 | ChiTotal | total:m617_2 |
 | ir.cpp:617:15:617:22 | SideEffect | ~m616_6 |
@@ -2680,7 +2680,7 @@
 | ir.cpp:619:12:619:13 | Arg(this) | this:r619_1 |
 | ir.cpp:619:16:619:30 | CallTarget | func:r619_3 |
 | ir.cpp:619:16:619:30 | ChiPartial | partial:m619_7 |
-| ir.cpp:619:16:619:30 | ChiPartial | partial:m619_10 |
+| ir.cpp:619:16:619:30 | ChiPartial | partial:m619_9 |
 | ir.cpp:619:16:619:30 | ChiTotal | total:m618_5 |
 | ir.cpp:619:16:619:30 | ChiTotal | total:m619_2 |
 | ir.cpp:619:16:619:30 | SideEffect | ~m618_5 |
@@ -2906,7 +2906,7 @@
 | ir.cpp:658:5:658:5 | ChiPartial | partial:m658_3 |
 | ir.cpp:658:5:658:5 | ChiTotal | total:m658_2 |
 | ir.cpp:658:5:658:5 | Load | m658_6 |
-| ir.cpp:658:5:658:5 | SideEffect | m662_10 |
+| ir.cpp:658:5:658:5 | SideEffect | m662_9 |
 | ir.cpp:658:5:658:5 | SideEffect | ~m662_7 |
 | ir.cpp:658:5:658:5 | Unary | m658_6 |
 | ir.cpp:658:5:658:5 | Unary | m658_6 |
@@ -2929,7 +2929,7 @@
 | ir.cpp:662:9:662:19 | Arg(this) | this:r662_1 |
 | ir.cpp:662:9:662:19 | CallTarget | func:r662_2 |
 | ir.cpp:662:9:662:19 | ChiPartial | partial:m662_6 |
-| ir.cpp:662:9:662:19 | ChiPartial | partial:m662_9 |
+| ir.cpp:662:9:662:19 | ChiPartial | partial:m662_8 |
 | ir.cpp:662:9:662:19 | ChiTotal | total:m661_4 |
 | ir.cpp:662:9:662:19 | ChiTotal | total:m663_5 |
 | ir.cpp:662:9:662:19 | SideEffect | ~m663_5 |
@@ -3147,10 +3147,10 @@
 | ir.cpp:736:5:736:19 | Arg(this) | this:r736_1 |
 | ir.cpp:736:5:736:19 | CallTarget | func:r736_3 |
 | ir.cpp:736:5:736:19 | ChiPartial | partial:m736_7 |
-| ir.cpp:736:5:736:19 | ChiPartial | partial:m736_10 |
+| ir.cpp:736:5:736:19 | ChiPartial | partial:m736_9 |
 | ir.cpp:736:5:736:19 | ChiTotal | total:m724_4 |
 | ir.cpp:736:5:736:19 | ChiTotal | total:m736_2 |
-| ir.cpp:736:5:736:19 | Load | m736_11 |
+| ir.cpp:736:5:736:19 | Load | m736_10 |
 | ir.cpp:736:5:736:19 | SideEffect | ~m724_4 |
 | ir.cpp:736:18:736:18 | Address | &:r736_4 |
 | ir.cpp:736:18:736:18 | Address | &:r736_5 |
@@ -3673,11 +3673,11 @@
 | ir.cpp:809:7:809:13 | Arg(this) | this:r809_3 |
 | ir.cpp:809:7:809:13 | CallTarget | func:r809_5 |
 | ir.cpp:809:7:809:13 | ChiPartial | partial:m809_10 |
-| ir.cpp:809:7:809:13 | ChiPartial | partial:m809_13 |
+| ir.cpp:809:7:809:13 | ChiPartial | partial:m809_12 |
 | ir.cpp:809:7:809:13 | ChiTotal | total:m808_8 |
 | ir.cpp:809:7:809:13 | ChiTotal | total:m809_4 |
 | ir.cpp:809:7:809:13 | SideEffect | ~m808_8 |
-| ir.cpp:809:7:809:13 | SideEffect | ~m809_14 |
+| ir.cpp:809:7:809:13 | SideEffect | ~m809_13 |
 | ir.cpp:809:7:809:13 | Unary | r809_3 |
 | ir.cpp:809:7:809:13 | Unary | r809_15 |
 | ir.cpp:809:13:809:13 | Address | &:r809_8 |
@@ -3703,11 +3703,11 @@
 | ir.cpp:810:7:810:26 | Arg(this) | this:r810_3 |
 | ir.cpp:810:7:810:26 | CallTarget | func:r810_5 |
 | ir.cpp:810:7:810:26 | ChiPartial | partial:m810_10 |
-| ir.cpp:810:7:810:26 | ChiPartial | partial:m810_13 |
+| ir.cpp:810:7:810:26 | ChiPartial | partial:m810_12 |
 | ir.cpp:810:7:810:26 | ChiTotal | total:m809_19 |
 | ir.cpp:810:7:810:26 | ChiTotal | total:m810_4 |
 | ir.cpp:810:7:810:26 | SideEffect | ~m809_19 |
-| ir.cpp:810:7:810:26 | SideEffect | ~m810_14 |
+| ir.cpp:810:7:810:26 | SideEffect | ~m810_13 |
 | ir.cpp:810:7:810:26 | Unary | r810_3 |
 | ir.cpp:810:7:810:26 | Unary | r810_15 |
 | ir.cpp:810:25:810:25 | Address | &:r810_8 |
@@ -3819,11 +3819,11 @@
 | ir.cpp:823:7:823:13 | Arg(this) | this:r823_3 |
 | ir.cpp:823:7:823:13 | CallTarget | func:r823_5 |
 | ir.cpp:823:7:823:13 | ChiPartial | partial:m823_11 |
-| ir.cpp:823:7:823:13 | ChiPartial | partial:m823_14 |
+| ir.cpp:823:7:823:13 | ChiPartial | partial:m823_13 |
 | ir.cpp:823:7:823:13 | ChiTotal | total:m822_9 |
 | ir.cpp:823:7:823:13 | ChiTotal | total:m823_4 |
 | ir.cpp:823:7:823:13 | SideEffect | ~m822_9 |
-| ir.cpp:823:7:823:13 | SideEffect | ~m823_15 |
+| ir.cpp:823:7:823:13 | SideEffect | ~m823_14 |
 | ir.cpp:823:7:823:13 | Unary | r823_3 |
 | ir.cpp:823:7:823:13 | Unary | r823_16 |
 | ir.cpp:823:13:823:13 | Address | &:r823_9 |
@@ -3850,11 +3850,11 @@
 | ir.cpp:824:7:824:26 | Arg(this) | this:r824_3 |
 | ir.cpp:824:7:824:26 | CallTarget | func:r824_5 |
 | ir.cpp:824:7:824:26 | ChiPartial | partial:m824_11 |
-| ir.cpp:824:7:824:26 | ChiPartial | partial:m824_14 |
+| ir.cpp:824:7:824:26 | ChiPartial | partial:m824_13 |
 | ir.cpp:824:7:824:26 | ChiTotal | total:m823_20 |
 | ir.cpp:824:7:824:26 | ChiTotal | total:m824_4 |
 | ir.cpp:824:7:824:26 | SideEffect | ~m823_20 |
-| ir.cpp:824:7:824:26 | SideEffect | ~m824_15 |
+| ir.cpp:824:7:824:26 | SideEffect | ~m824_14 |
 | ir.cpp:824:7:824:26 | Unary | r824_3 |
 | ir.cpp:824:7:824:26 | Unary | r824_16 |
 | ir.cpp:824:25:824:25 | Address | &:r824_9 |
@@ -4059,11 +4059,11 @@
 | ir.cpp:867:1:867:14 | ChiPartial | partial:m867_3 |
 | ir.cpp:867:1:867:14 | ChiTotal | total:m867_2 |
 | ir.cpp:867:1:867:14 | Load | m867_6 |
-| ir.cpp:867:1:867:14 | SideEffect | m868_9 |
+| ir.cpp:867:1:867:14 | SideEffect | m868_8 |
 | ir.cpp:867:1:867:14 | SideEffect | ~m868_6 |
 | ir.cpp:868:3:868:12 | CallTarget | func:r868_1 |
 | ir.cpp:868:3:868:12 | ChiPartial | partial:m868_5 |
-| ir.cpp:868:3:868:12 | ChiPartial | partial:m868_8 |
+| ir.cpp:868:3:868:12 | ChiPartial | partial:m868_7 |
 | ir.cpp:868:3:868:12 | ChiTotal | total:m867_4 |
 | ir.cpp:868:3:868:12 | ChiTotal | total:m867_8 |
 | ir.cpp:868:3:868:12 | SideEffect | ~m867_4 |
@@ -4310,7 +4310,7 @@
 | ir.cpp:954:3:954:27 | CallTarget | func:r954_9 |
 | ir.cpp:954:3:954:27 | ChiPartial | partial:m954_5 |
 | ir.cpp:954:3:954:27 | ChiPartial | partial:m954_13 |
-| ir.cpp:954:3:954:27 | ChiPartial | partial:m954_16 |
+| ir.cpp:954:3:954:27 | ChiPartial | partial:m954_15 |
 | ir.cpp:954:3:954:27 | ChiTotal | total:m953_11 |
 | ir.cpp:954:3:954:27 | ChiTotal | total:m954_6 |
 | ir.cpp:954:3:954:27 | ChiTotal | total:m954_7 |
@@ -5386,10 +5386,10 @@
 | ir.cpp:1154:5:1154:19 | Arg(this) | this:r1154_1 |
 | ir.cpp:1154:5:1154:19 | CallTarget | func:r1154_3 |
 | ir.cpp:1154:5:1154:19 | ChiPartial | partial:m1154_7 |
-| ir.cpp:1154:5:1154:19 | ChiPartial | partial:m1154_10 |
+| ir.cpp:1154:5:1154:19 | ChiPartial | partial:m1154_9 |
 | ir.cpp:1154:5:1154:19 | ChiTotal | total:m1142_4 |
 | ir.cpp:1154:5:1154:19 | ChiTotal | total:m1154_2 |
-| ir.cpp:1154:5:1154:19 | Load | m1154_11 |
+| ir.cpp:1154:5:1154:19 | Load | m1154_10 |
 | ir.cpp:1154:5:1154:19 | SideEffect | ~m1142_4 |
 | ir.cpp:1154:18:1154:18 | Address | &:r1154_4 |
 | ir.cpp:1154:18:1154:18 | Address | &:r1154_5 |
@@ -5496,14 +5496,14 @@
 | ir.cpp:1178:8:1178:23 | Address | &:r1178_5 |
 | ir.cpp:1178:8:1178:23 | ChiPartial | partial:m1178_3 |
 | ir.cpp:1178:8:1178:23 | ChiTotal | total:m1178_2 |
-| ir.cpp:1178:8:1178:23 | Load | m1179_11 |
+| ir.cpp:1178:8:1178:23 | Load | m1179_10 |
 | ir.cpp:1178:8:1178:23 | SideEffect | ~m1179_8 |
 | ir.cpp:1179:3:1179:23 | Address | &:r1179_1 |
 | ir.cpp:1179:3:1179:23 | Address | &:r1179_1 |
 | ir.cpp:1179:3:1179:23 | Arg(this) | this:r1179_1 |
 | ir.cpp:1179:3:1179:23 | CallTarget | func:r1179_3 |
 | ir.cpp:1179:3:1179:23 | ChiPartial | partial:m1179_7 |
-| ir.cpp:1179:3:1179:23 | ChiPartial | partial:m1179_10 |
+| ir.cpp:1179:3:1179:23 | ChiPartial | partial:m1179_9 |
 | ir.cpp:1179:3:1179:23 | ChiTotal | total:m1178_4 |
 | ir.cpp:1179:3:1179:23 | ChiTotal | total:m1179_2 |
 | ir.cpp:1179:3:1179:23 | SideEffect | ~m1178_4 |
@@ -5651,7 +5651,7 @@
 | ir.cpp:1242:19:1242:19 | Address | &:r1242_5 |
 | ir.cpp:1242:19:1242:19 | Arg(this) | this:r1242_5 |
 | ir.cpp:1242:19:1242:19 | ChiPartial | partial:m1242_16 |
-| ir.cpp:1242:19:1242:19 | ChiTotal | total:m1242_14 |
+| ir.cpp:1242:19:1242:19 | ChiTotal | total:m1242_13 |
 | ir.cpp:1242:19:1242:19 | Condition | r1242_3 |
 | ir.cpp:1242:19:1242:19 | Load | ~m1242_1 |
 | ir.cpp:1242:19:1242:19 | Phi | from 0:~m1240_4 |
@@ -5659,7 +5659,7 @@
 | ir.cpp:1242:19:1242:19 | StoreValue | r1242_15 |
 | ir.cpp:1242:20:1242:29 | CallTarget | func:r1242_6 |
 | ir.cpp:1242:20:1242:29 | ChiPartial | partial:m1242_10 |
-| ir.cpp:1242:20:1242:29 | ChiPartial | partial:m1242_13 |
+| ir.cpp:1242:20:1242:29 | ChiPartial | partial:m1242_12 |
 | ir.cpp:1242:20:1242:29 | ChiTotal | total:m1242_1 |
 | ir.cpp:1242:20:1242:29 | ChiTotal | total:m1242_11 |
 | ir.cpp:1242:20:1242:29 | SideEffect | ~m1242_1 |
@@ -5672,7 +5672,7 @@
 | ir.cpp:1243:19:1243:19 | Address | &:r1243_5 |
 | ir.cpp:1243:19:1243:19 | Arg(this) | this:r1243_5 |
 | ir.cpp:1243:19:1243:19 | ChiPartial | partial:m1243_16 |
-| ir.cpp:1243:19:1243:19 | ChiTotal | total:m1243_14 |
+| ir.cpp:1243:19:1243:19 | ChiTotal | total:m1243_13 |
 | ir.cpp:1243:19:1243:19 | Condition | r1243_3 |
 | ir.cpp:1243:19:1243:19 | Load | ~m1243_1 |
 | ir.cpp:1243:19:1243:19 | Phi | from 2:~m1242_1 |
@@ -5680,7 +5680,7 @@
 | ir.cpp:1243:19:1243:19 | StoreValue | r1243_15 |
 | ir.cpp:1243:20:1243:28 | CallTarget | func:r1243_6 |
 | ir.cpp:1243:20:1243:28 | ChiPartial | partial:m1243_10 |
-| ir.cpp:1243:20:1243:28 | ChiPartial | partial:m1243_13 |
+| ir.cpp:1243:20:1243:28 | ChiPartial | partial:m1243_12 |
 | ir.cpp:1243:20:1243:28 | ChiTotal | total:m1243_1 |
 | ir.cpp:1243:20:1243:28 | ChiTotal | total:m1243_11 |
 | ir.cpp:1243:20:1243:28 | SideEffect | ~m1243_1 |
@@ -6200,12 +6200,12 @@
 | ir.cpp:1370:23:1370:27 | Arg(this) | this:r1370_2 |
 | ir.cpp:1370:23:1370:27 | CallTarget | func:r1370_4 |
 | ir.cpp:1370:23:1370:27 | ChiPartial | partial:m1370_8 |
-| ir.cpp:1370:23:1370:27 | ChiPartial | partial:m1370_11 |
+| ir.cpp:1370:23:1370:27 | ChiPartial | partial:m1370_10 |
 | ir.cpp:1370:23:1370:27 | ChiTotal | total:m1369_7 |
 | ir.cpp:1370:23:1370:27 | ChiTotal | total:m1370_3 |
 | ir.cpp:1370:23:1370:27 | SideEffect | ~m1365_3 |
 | ir.cpp:1370:23:1370:27 | SideEffect | ~m1369_7 |
-| ir.cpp:1370:23:1370:27 | SideEffect | ~m1370_12 |
+| ir.cpp:1370:23:1370:27 | SideEffect | ~m1370_11 |
 | ir.cpp:1370:23:1370:27 | Unary | r1370_2 |
 | ir.cpp:1370:23:1370:27 | Unary | r1370_5 |
 | ir.cpp:1371:5:1371:15 | CallTarget | func:r1371_1 |
@@ -6221,10 +6221,10 @@
 | ir.cpp:1371:17:1371:17 | Arg(this) | this:r1371_2 |
 | ir.cpp:1371:17:1371:17 | CallTarget | func:r1371_4 |
 | ir.cpp:1371:17:1371:17 | ChiPartial | partial:m1371_9 |
-| ir.cpp:1371:17:1371:17 | ChiPartial | partial:m1371_12 |
+| ir.cpp:1371:17:1371:17 | ChiPartial | partial:m1371_11 |
 | ir.cpp:1371:17:1371:17 | ChiTotal | total:m1370_16 |
 | ir.cpp:1371:17:1371:17 | ChiTotal | total:m1371_3 |
-| ir.cpp:1371:17:1371:17 | Load | m1371_13 |
+| ir.cpp:1371:17:1371:17 | Load | m1371_12 |
 | ir.cpp:1371:17:1371:17 | SideEffect | ~m1366_6 |
 | ir.cpp:1371:17:1371:17 | SideEffect | ~m1370_16 |
 | ir.cpp:1371:17:1371:17 | Unary | r1371_5 |
@@ -6242,10 +6242,10 @@
 | ir.cpp:1372:25:1372:29 | Arg(this) | this:r1372_2 |
 | ir.cpp:1372:25:1372:29 | CallTarget | func:r1372_4 |
 | ir.cpp:1372:25:1372:29 | ChiPartial | partial:m1372_8 |
-| ir.cpp:1372:25:1372:29 | ChiPartial | partial:m1372_11 |
+| ir.cpp:1372:25:1372:29 | ChiPartial | partial:m1372_10 |
 | ir.cpp:1372:25:1372:29 | ChiTotal | total:m1371_17 |
 | ir.cpp:1372:25:1372:29 | ChiTotal | total:m1372_3 |
-| ir.cpp:1372:25:1372:29 | Load | m1372_12 |
+| ir.cpp:1372:25:1372:29 | Load | m1372_11 |
 | ir.cpp:1372:25:1372:29 | SideEffect | ~m1365_3 |
 | ir.cpp:1372:25:1372:29 | SideEffect | ~m1371_17 |
 | ir.cpp:1372:25:1372:29 | Unary | r1372_5 |
@@ -6414,10 +6414,10 @@
 | ir.cpp:1396:17:1396:17 | Arg(this) | this:r1396_2 |
 | ir.cpp:1396:17:1396:17 | CallTarget | func:r1396_4 |
 | ir.cpp:1396:17:1396:17 | ChiPartial | partial:m1396_9 |
-| ir.cpp:1396:17:1396:17 | ChiPartial | partial:m1396_12 |
+| ir.cpp:1396:17:1396:17 | ChiPartial | partial:m1396_11 |
 | ir.cpp:1396:17:1396:17 | ChiTotal | total:m1395_7 |
 | ir.cpp:1396:17:1396:17 | ChiTotal | total:m1396_3 |
-| ir.cpp:1396:17:1396:17 | Load | m1396_13 |
+| ir.cpp:1396:17:1396:17 | Load | m1396_12 |
 | ir.cpp:1396:17:1396:17 | SideEffect | ~m1392_6 |
 | ir.cpp:1396:17:1396:17 | SideEffect | ~m1395_7 |
 | ir.cpp:1396:17:1396:17 | Unary | r1396_5 |
@@ -6741,7 +6741,7 @@
 | smart_ptr.cpp:19:20:19:21 | ChiPartial | partial:m19_18 |
 | smart_ptr.cpp:19:20:19:21 | ChiTotal | total:m17_8 |
 | smart_ptr.cpp:19:20:19:21 | ChiTotal | total:m18_8 |
-| smart_ptr.cpp:19:20:19:21 | Load | m19_12 |
+| smart_ptr.cpp:19:20:19:21 | Load | m19_11 |
 | smart_ptr.cpp:19:20:19:21 | SideEffect | m18_9 |
 | smart_ptr.cpp:19:20:19:21 | SideEffect | ~m17_8 |
 | smart_ptr.cpp:19:20:19:21 | SideEffect | ~m18_8 |
@@ -6766,7 +6766,7 @@
 | smart_ptr.cpp:31:26:31:37 | CallTarget | func:r31_4 |
 | smart_ptr.cpp:31:26:31:37 | ChiPartial | partial:m31_9 |
 | smart_ptr.cpp:31:26:31:37 | ChiTotal | total:m28_4 |
-| smart_ptr.cpp:31:26:31:37 | Load | m31_12 |
+| smart_ptr.cpp:31:26:31:37 | Load | m31_11 |
 | smart_ptr.cpp:31:26:31:37 | SideEffect | m29_2 |
 | smart_ptr.cpp:31:26:31:37 | SideEffect | ~m28_4 |
 | smart_ptr.cpp:31:26:31:37 | SideEffect | ~m31_16 |
@@ -6791,7 +6791,7 @@
 | smart_ptr.cpp:35:30:35:49 | ChiPartial | partial:m35_18 |
 | smart_ptr.cpp:35:30:35:49 | ChiTotal | total:m31_16 |
 | smart_ptr.cpp:35:30:35:49 | ChiTotal | total:m35_16 |
-| smart_ptr.cpp:35:30:35:49 | Load | m35_12 |
+| smart_ptr.cpp:35:30:35:49 | Load | m35_11 |
 | smart_ptr.cpp:35:30:35:49 | SideEffect | m33_2 |
 | smart_ptr.cpp:35:30:35:49 | SideEffect | ~m31_16 |
 | smart_ptr.cpp:35:30:35:49 | SideEffect | ~m35_16 |
@@ -6816,7 +6816,7 @@
 | smart_ptr.cpp:39:37:39:51 | ChiPartial | partial:m39_18 |
 | smart_ptr.cpp:39:37:39:51 | ChiTotal | total:m35_19 |
 | smart_ptr.cpp:39:37:39:51 | ChiTotal | total:m39_16 |
-| smart_ptr.cpp:39:37:39:51 | Load | m39_12 |
+| smart_ptr.cpp:39:37:39:51 | Load | m39_11 |
 | smart_ptr.cpp:39:37:39:51 | SideEffect | m37_2 |
 | smart_ptr.cpp:39:37:39:51 | SideEffect | ~m35_19 |
 | smart_ptr.cpp:39:37:39:51 | SideEffect | ~m39_16 |
@@ -6841,7 +6841,7 @@
 | smart_ptr.cpp:43:37:43:51 | ChiPartial | partial:m43_18 |
 | smart_ptr.cpp:43:37:43:51 | ChiTotal | total:m39_19 |
 | smart_ptr.cpp:43:37:43:51 | ChiTotal | total:m43_16 |
-| smart_ptr.cpp:43:37:43:51 | Load | m43_12 |
+| smart_ptr.cpp:43:37:43:51 | Load | m43_11 |
 | smart_ptr.cpp:43:37:43:51 | SideEffect | m41_2 |
 | smart_ptr.cpp:43:37:43:51 | SideEffect | ~m39_19 |
 | smart_ptr.cpp:43:37:43:51 | SideEffect | ~m43_16 |
@@ -6863,7 +6863,7 @@
 | smart_ptr.cpp:47:43:47:63 | CallTarget | func:r47_4 |
 | smart_ptr.cpp:47:43:47:63 | ChiPartial | partial:m47_9 |
 | smart_ptr.cpp:47:43:47:63 | ChiTotal | total:m43_19 |
-| smart_ptr.cpp:47:43:47:63 | Load | m47_12 |
+| smart_ptr.cpp:47:43:47:63 | Load | m47_11 |
 | smart_ptr.cpp:47:43:47:63 | SideEffect | m45_2 |
 | smart_ptr.cpp:47:43:47:63 | SideEffect | ~m43_19 |
 | smart_ptr.cpp:47:43:47:63 | SideEffect | ~m47_16 |

cpp/ql/test/library-tests/ir/ir/raw_ir.expected

@@ -3362,8 +3362,8 @@ ir.cpp:
 #  617|     r617_5(char *)         = Convert                         : r617_4
 #  617|     v617_6(void)           = Call[String]                    : func:r617_3, this:r617_1, 0:r617_5
 #  617|     mu617_7(unknown)       = ^CallSideEffect                 : ~m?
-#  617|     v617_8(void)           = ^BufferReadSideEffect[0]        : &:r617_5, ~m?
-#  617|     mu617_9(String)        = ^IndirectMayWriteSideEffect[-1] : &:r617_1
+#  617|     mu617_8(String)        = ^IndirectMayWriteSideEffect[-1] : &:r617_1
+#  617|     v617_9(void)           = ^BufferReadSideEffect[0]        : &:r617_5, ~m?
 #  618|     r618_1(glval<String>)  = VariableAddress[s3]             : 
 #  618|     r618_2(glval<unknown>) = FunctionAddress[ReturnObject]   : 
 #  618|     r618_3(String)         = Call[ReturnObject]              : func:r618_2
@@ -3376,8 +3376,8 @@ ir.cpp:
 #  619|     r619_5(char *)         = Convert                         : r619_4
 #  619|     v619_6(void)           = Call[String]                    : func:r619_3, this:r619_1, 0:r619_5
 #  619|     mu619_7(unknown)       = ^CallSideEffect                 : ~m?
-#  619|     v619_8(void)           = ^BufferReadSideEffect[0]        : &:r619_5, ~m?
-#  619|     mu619_9(String)        = ^IndirectMayWriteSideEffect[-1] : &:r619_1
+#  619|     mu619_8(String)        = ^IndirectMayWriteSideEffect[-1] : &:r619_1
+#  619|     v619_9(void)           = ^BufferReadSideEffect[0]        : &:r619_5, ~m?
 #  620|     v620_1(void)           = NoOp                            : 
 #  615|     v615_4(void)           = ReturnVoid                      : 
 #  615|     v615_5(void)           = AliasedUse                      : ~m?
@@ -3628,8 +3628,8 @@ ir.cpp:
 #  662|     r662_4(char *)         = Convert                         : r662_3
 #  662|     v662_5(void)           = Call[String]                    : func:r662_2, this:r662_1, 0:r662_4
 #  662|     mu662_6(unknown)       = ^CallSideEffect                 : ~m?
-#  662|     v662_7(void)           = ^BufferReadSideEffect[0]        : &:r662_4, ~m?
-#  662|     mu662_8(String)        = ^IndirectMayWriteSideEffect[-1] : &:r662_1
+#  662|     mu662_7(String)        = ^IndirectMayWriteSideEffect[-1] : &:r662_1
+#  662|     v662_8(void)           = ^BufferReadSideEffect[0]        : &:r662_4, ~m?
 #  664|     v664_1(void)           = NoOp                            : 
 #  658|     v658_8(void)           = ReturnIndirection[#this]        : &:r658_6, ~m?
 #  658|     v658_9(void)           = ReturnVoid                      : 
@@ -3924,8 +3924,8 @@ ir.cpp:
 #  731|     r731_15(char *)          = Convert                         : r731_14
 #  731|     v731_16(void)            = Call[String]                    : func:r731_13, this:r731_11, 0:r731_15
 #  731|     mu731_17(unknown)        = ^CallSideEffect                 : ~m?
-#  731|     v731_18(void)            = ^BufferReadSideEffect[0]        : &:r731_15, ~m?
-#  731|     mu731_19(String)         = ^IndirectMayWriteSideEffect[-1] : &:r731_11
+#  731|     mu731_18(String)         = ^IndirectMayWriteSideEffect[-1] : &:r731_11
+#  731|     v731_19(void)            = ^BufferReadSideEffect[0]        : &:r731_15, ~m?
 #  731|     v731_20(void)            = ThrowValue                      : &:r731_11, ~m?
 #-----|   Exception -> Block 9
 
@@ -3952,8 +3952,8 @@ ir.cpp:
 #  736|     r736_5(char *)         = Load[s]                         : &:r736_4, ~m?
 #  736|     v736_6(void)           = Call[String]                    : func:r736_3, this:r736_1, 0:r736_5
 #  736|     mu736_7(unknown)       = ^CallSideEffect                 : ~m?
-#  736|     v736_8(void)           = ^BufferReadSideEffect[0]        : &:r736_5, ~m?
-#  736|     mu736_9(String)        = ^IndirectMayWriteSideEffect[-1] : &:r736_1
+#  736|     mu736_8(String)        = ^IndirectMayWriteSideEffect[-1] : &:r736_1
+#  736|     v736_9(void)           = ^BufferReadSideEffect[0]        : &:r736_5, ~m?
 #  736|     v736_10(void)          = ThrowValue                      : &:r736_1, ~m?
 #-----|   Exception -> Block 2
 
@@ -4518,8 +4518,8 @@ ir.cpp:
 #  809|     r809_8(Base &)             = CopyValue                                 : r809_7
 #  809|     v809_9(void)               = Call[Base]                                : func:r809_5, this:r809_3, 0:r809_8
 #  809|     mu809_10(unknown)          = ^CallSideEffect                           : ~m?
-#  809|     v809_11(void)              = ^BufferReadSideEffect[0]                  : &:r809_8, ~m?
-#  809|     mu809_12(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r809_3
+#  809|     mu809_11(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r809_3
+#  809|     v809_12(void)              = ^BufferReadSideEffect[0]                  : &:r809_8, ~m?
 #  809|     r809_13(glval<Base>)       = Convert                                   : r809_3
 #  809|     r809_14(Base &)            = CopyValue                                 : r809_13
 #  809|     r809_15(Base &)            = Call[operator=]                           : func:r809_2, this:r809_1, 0:r809_14
@@ -4538,8 +4538,8 @@ ir.cpp:
 #  810|     r810_8(Base &)             = CopyValue                                 : r810_7
 #  810|     v810_9(void)               = Call[Base]                                : func:r810_5, this:r810_3, 0:r810_8
 #  810|     mu810_10(unknown)          = ^CallSideEffect                           : ~m?
-#  810|     v810_11(void)              = ^BufferReadSideEffect[0]                  : &:r810_8, ~m?
-#  810|     mu810_12(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r810_3
+#  810|     mu810_11(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r810_3
+#  810|     v810_12(void)              = ^BufferReadSideEffect[0]                  : &:r810_8, ~m?
 #  810|     r810_13(glval<Base>)       = Convert                                   : r810_3
 #  810|     r810_14(Base &)            = CopyValue                                 : r810_13
 #  810|     r810_15(Base &)            = Call[operator=]                           : func:r810_2, this:r810_1, 0:r810_14
@@ -4630,8 +4630,8 @@ ir.cpp:
 #  823|     r823_9(Base &)             = CopyValue                                 : r823_8
 #  823|     v823_10(void)              = Call[Base]                                : func:r823_5, this:r823_3, 0:r823_9
 #  823|     mu823_11(unknown)          = ^CallSideEffect                           : ~m?
-#  823|     v823_12(void)              = ^BufferReadSideEffect[0]                  : &:r823_9, ~m?
-#  823|     mu823_13(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r823_3
+#  823|     mu823_12(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r823_3
+#  823|     v823_13(void)              = ^BufferReadSideEffect[0]                  : &:r823_9, ~m?
 #  823|     r823_14(glval<Base>)       = Convert                                   : r823_3
 #  823|     r823_15(Base &)            = CopyValue                                 : r823_14
 #  823|     r823_16(Base &)            = Call[operator=]                           : func:r823_2, this:r823_1, 0:r823_15
@@ -4651,8 +4651,8 @@ ir.cpp:
 #  824|     r824_9(Base &)             = CopyValue                                 : r824_8
 #  824|     v824_10(void)              = Call[Base]                                : func:r824_5, this:r824_3, 0:r824_9
 #  824|     mu824_11(unknown)          = ^CallSideEffect                           : ~m?
-#  824|     v824_12(void)              = ^BufferReadSideEffect[0]                  : &:r824_9, ~m?
-#  824|     mu824_13(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r824_3
+#  824|     mu824_12(Base)             = ^IndirectMayWriteSideEffect[-1]           : &:r824_3
+#  824|     v824_13(void)              = ^BufferReadSideEffect[0]                  : &:r824_9, ~m?
 #  824|     r824_14(glval<Base>)       = Convert                                   : r824_3
 #  824|     r824_15(Base &)            = CopyValue                                 : r824_14
 #  824|     r824_16(Base &)            = Call[operator=]                           : func:r824_2, this:r824_1, 0:r824_15
@@ -4876,8 +4876,8 @@ ir.cpp:
 #  868|     r868_3(char *)         = Convert                         : r868_2
 #  868|     v868_4(void)           = Call[String]                    : func:r868_1, this:mu867_5, 0:r868_3
 #  868|     mu868_5(unknown)       = ^CallSideEffect                 : ~m?
-#  868|     v868_6(void)           = ^BufferReadSideEffect[0]        : &:r868_3, ~m?
-#  868|     mu868_7(String)        = ^IndirectMayWriteSideEffect[-1] : &:mu867_5
+#  868|     mu868_6(String)        = ^IndirectMayWriteSideEffect[-1] : &:mu867_5
+#  868|     v868_7(void)           = ^BufferReadSideEffect[0]        : &:r868_3, ~m?
 #  869|     v869_1(void)           = NoOp                            : 
 #  867|     v867_8(void)           = ReturnIndirection[#this]        : &:r867_6, ~m?
 #  867|     v867_9(void)           = ReturnVoid                      : 
@@ -5177,8 +5177,8 @@ ir.cpp:
 #  954|     r954_10(char *)        = Convert                         : r954_9
 #  954|     v954_11(void)          = Call[String]                    : func:r954_8, this:r954_7, 0:r954_10
 #  954|     mu954_12(unknown)      = ^CallSideEffect                 : ~m?
-#  954|     v954_13(void)          = ^BufferReadSideEffect[0]        : &:r954_10, ~m?
-#  954|     mu954_14(String)       = ^IndirectMayWriteSideEffect[-1] : &:r954_7
+#  954|     mu954_13(String)       = ^IndirectMayWriteSideEffect[-1] : &:r954_7
+#  954|     v954_14(void)          = ^BufferReadSideEffect[0]        : &:r954_10, ~m?
 #  955|     r955_1(glval<unknown>) = FunctionAddress[operator new]   : 
 #  955|     r955_2(unsigned long)  = Constant[256]                   : 
 #  955|     r955_3(align_val_t)    = Constant[128]                   : 
@@ -6423,8 +6423,8 @@ ir.cpp:
 # 1149|     r1149_15(char *)          = Convert                         : r1149_14
 # 1149|     v1149_16(void)            = Call[String]                    : func:r1149_13, this:r1149_11, 0:r1149_15
 # 1149|     mu1149_17(unknown)        = ^CallSideEffect                 : ~m?
-# 1149|     v1149_18(void)            = ^BufferReadSideEffect[0]        : &:r1149_15, ~m?
-# 1149|     mu1149_19(String)         = ^IndirectMayWriteSideEffect[-1] : &:r1149_11
+# 1149|     mu1149_18(String)         = ^IndirectMayWriteSideEffect[-1] : &:r1149_11
+# 1149|     v1149_19(void)            = ^BufferReadSideEffect[0]        : &:r1149_15, ~m?
 # 1149|     v1149_20(void)            = ThrowValue                      : &:r1149_11, ~m?
 #-----|   Exception -> Block 9
 
@@ -6451,8 +6451,8 @@ ir.cpp:
 # 1154|     r1154_5(char *)         = Load[s]                         : &:r1154_4, ~m?
 # 1154|     v1154_6(void)           = Call[String]                    : func:r1154_3, this:r1154_1, 0:r1154_5
 # 1154|     mu1154_7(unknown)       = ^CallSideEffect                 : ~m?
-# 1154|     v1154_8(void)           = ^BufferReadSideEffect[0]        : &:r1154_5, ~m?
-# 1154|     mu1154_9(String)        = ^IndirectMayWriteSideEffect[-1] : &:r1154_1
+# 1154|     mu1154_8(String)        = ^IndirectMayWriteSideEffect[-1] : &:r1154_1
+# 1154|     v1154_9(void)           = ^BufferReadSideEffect[0]        : &:r1154_5, ~m?
 # 1154|     v1154_10(void)          = ThrowValue                      : &:r1154_1, ~m?
 #-----|   Exception -> Block 2
 
@@ -6577,8 +6577,8 @@ ir.cpp:
 # 1179|     r1179_5(char *)         = Convert                         : r1179_4
 # 1179|     v1179_6(void)           = Call[String]                    : func:r1179_3, this:r1179_1, 0:r1179_5
 # 1179|     mu1179_7(unknown)       = ^CallSideEffect                 : ~m?
-# 1179|     v1179_8(void)           = ^BufferReadSideEffect[0]        : &:r1179_5, ~m?
-# 1179|     mu1179_9(String)        = ^IndirectMayWriteSideEffect[-1] : &:r1179_1
+# 1179|     mu1179_8(String)        = ^IndirectMayWriteSideEffect[-1] : &:r1179_1
+# 1179|     v1179_9(void)           = ^BufferReadSideEffect[0]        : &:r1179_5, ~m?
 # 1178|     r1178_4(glval<String>)  = VariableAddress[#return]        : 
 # 1178|     v1178_5(void)           = ReturnValue                     : &:r1178_4, ~m?
 # 1178|     v1178_6(void)           = AliasedUse                      : ~m?
@@ -6832,8 +6832,8 @@ ir.cpp:
 # 1242|     r1242_7(char *)         = Convert                         : r1242_6
 # 1242|     v1242_8(void)           = Call[String]                    : func:r1242_5, this:r1242_4, 0:r1242_7
 # 1242|     mu1242_9(unknown)       = ^CallSideEffect                 : ~m?
-# 1242|     v1242_10(void)          = ^BufferReadSideEffect[0]        : &:r1242_7, ~m?
-# 1242|     mu1242_11(String)       = ^IndirectMayWriteSideEffect[-1] : &:r1242_4
+# 1242|     mu1242_10(String)       = ^IndirectMayWriteSideEffect[-1] : &:r1242_4
+# 1242|     v1242_11(void)          = ^BufferReadSideEffect[0]        : &:r1242_7, ~m?
 # 1242|     r1242_12(bool)          = Constant[1]                     : 
 # 1242|     mu1242_13(bool)         = Store[b#init]                   : &:r1242_1, r1242_12
 #-----|   Goto -> Block 4
@@ -6852,8 +6852,8 @@ ir.cpp:
 # 1243|     r1243_7(char *)         = Load[dynamic]                   : &:r1243_6, ~m?
 # 1243|     v1243_8(void)           = Call[String]                    : func:r1243_5, this:r1243_4, 0:r1243_7
 # 1243|     mu1243_9(unknown)       = ^CallSideEffect                 : ~m?
-# 1243|     v1243_10(void)          = ^BufferReadSideEffect[0]        : &:r1243_7, ~m?
-# 1243|     mu1243_11(String)       = ^IndirectMayWriteSideEffect[-1] : &:r1243_4
+# 1243|     mu1243_10(String)       = ^IndirectMayWriteSideEffect[-1] : &:r1243_4
+# 1243|     v1243_11(void)          = ^BufferReadSideEffect[0]        : &:r1243_7, ~m?
 # 1243|     r1243_12(bool)          = Constant[1]                     : 
 # 1243|     mu1243_13(bool)         = Store[c#init]                   : &:r1243_1, r1243_12
 #-----|   Goto -> Block 6
@@ -7481,8 +7481,8 @@ ir.cpp:
 # 1370|     r1370_6(char *)          = Convert                           : r1370_5
 # 1370|     v1370_7(void)            = Call[String]                      : func:r1370_4, this:r1370_2, 0:r1370_6
 # 1370|     mu1370_8(unknown)        = ^CallSideEffect                   : ~m?
-# 1370|     v1370_9(void)            = ^BufferReadSideEffect[0]          : &:r1370_6, ~m?
-# 1370|     mu1370_10(String)        = ^IndirectMayWriteSideEffect[-1]   : &:r1370_2
+# 1370|     mu1370_9(String)         = ^IndirectMayWriteSideEffect[-1]   : &:r1370_2
+# 1370|     v1370_10(void)           = ^BufferReadSideEffect[0]          : &:r1370_6, ~m?
 # 1370|     r1370_11(String &)       = CopyValue                         : r1370_2
 # 1370|     v1370_12(void)           = Call[acceptRef]                   : func:r1370_1, 0:r1370_11
 # 1370|     mu1370_13(unknown)       = ^CallSideEffect                   : ~m?
@@ -7496,8 +7496,8 @@ ir.cpp:
 # 1371|     r1371_7(String &)        = CopyValue                         : r1371_6
 # 1371|     v1371_8(void)            = Call[String]                      : func:r1371_4, this:r1371_2, 0:r1371_7
 # 1371|     mu1371_9(unknown)        = ^CallSideEffect                   : ~m?
-# 1371|     v1371_10(void)           = ^BufferReadSideEffect[0]          : &:r1371_7, ~m?
-# 1371|     mu1371_11(String)        = ^IndirectMayWriteSideEffect[-1]   : &:r1371_2
+# 1371|     mu1371_10(String)        = ^IndirectMayWriteSideEffect[-1]   : &:r1371_2
+# 1371|     v1371_11(void)           = ^BufferReadSideEffect[0]          : &:r1371_7, ~m?
 # 1371|     r1371_12(String)         = Load[#temp1371:17]                : &:r1371_2, ~m?
 # 1371|     v1371_13(void)           = Call[acceptValue]                 : func:r1371_1, 0:r1371_12
 # 1371|     mu1371_14(unknown)       = ^CallSideEffect                   : ~m?
@@ -7509,8 +7509,8 @@ ir.cpp:
 # 1372|     r1372_6(char *)          = Convert                           : r1372_5
 # 1372|     v1372_7(void)            = Call[String]                      : func:r1372_4, this:r1372_2, 0:r1372_6
 # 1372|     mu1372_8(unknown)        = ^CallSideEffect                   : ~m?
-# 1372|     v1372_9(void)            = ^BufferReadSideEffect[0]          : &:r1372_6, ~m?
-# 1372|     mu1372_10(String)        = ^IndirectMayWriteSideEffect[-1]   : &:r1372_2
+# 1372|     mu1372_9(String)         = ^IndirectMayWriteSideEffect[-1]   : &:r1372_2
+# 1372|     v1372_10(void)           = ^BufferReadSideEffect[0]          : &:r1372_6, ~m?
 # 1372|     r1372_11(String)         = Load[#temp1372:25]                : &:r1372_2, ~m?
 # 1372|     v1372_12(void)           = Call[acceptValue]                 : func:r1372_1, 0:r1372_11
 # 1372|     mu1372_13(unknown)       = ^CallSideEffect                   : ~m?
@@ -7652,8 +7652,8 @@ ir.cpp:
 # 1396|     r1396_7(copy_constructor &)        = CopyValue                         : r1396_6
 # 1396|     v1396_8(void)                      = Call[copy_constructor]            : func:r1396_4, this:r1396_2, 0:r1396_7
 # 1396|     mu1396_9(unknown)                  = ^CallSideEffect                   : ~m?
-# 1396|     v1396_10(void)                     = ^BufferReadSideEffect[0]          : &:r1396_7, ~m?
-# 1396|     mu1396_11(copy_constructor)        = ^IndirectMayWriteSideEffect[-1]   : &:r1396_2
+# 1396|     mu1396_10(copy_constructor)        = ^IndirectMayWriteSideEffect[-1]   : &:r1396_2
+# 1396|     v1396_11(void)                     = ^BufferReadSideEffect[0]          : &:r1396_7, ~m?
 # 1396|     r1396_12(copy_constructor)         = Load[#temp1396:17]                : &:r1396_2, ~m?
 # 1396|     v1396_13(void)                     = Call[acceptValue]                 : func:r1396_1, 0:r1396_12
 # 1396|     mu1396_14(unknown)                 = ^CallSideEffect                   : ~m?
@@ -7967,8 +7967,8 @@ smart_ptr.cpp:
 #   19|     r19_7(shared_ptr<float> &)      = CopyValue                        : r19_6
 #   19|     v19_8(void)                     = Call[shared_ptr]                 : func:r19_4, this:r19_2, 0:r19_7
 #   19|     mu19_9(unknown)                 = ^CallSideEffect                  : ~m?
-#   19|     v19_10(void)                    = ^IndirectReadSideEffect[0]       : &:r19_7, ~m?
-#   19|     mu19_11(shared_ptr<float>)      = ^IndirectMustWriteSideEffect[-1] : &:r19_2
+#   19|     mu19_10(shared_ptr<float>)      = ^IndirectMustWriteSideEffect[-1] : &:r19_2
+#   19|     v19_11(void)                    = ^IndirectReadSideEffect[0]       : &:r19_7, ~m?
 #   19|     r19_12(shared_ptr<float>)       = Load[#temp19:20]                 : &:r19_2, ~m?
 #   19|     v19_13(void)                    = Call[shared_ptr_arg]             : func:r19_1, 0:r19_12
 #   19|     mu19_14(unknown)                = ^CallSideEffect                  : ~m?
@@ -7996,8 +7996,8 @@ smart_ptr.cpp:
 #   31|     r31_7(shared_ptr<const int> &)                        = CopyValue                                              : r31_6
 #   31|     v31_8(void)                                           = Call[shared_ptr]                                       : func:r31_4, this:r31_2, 0:r31_7
 #   31|     mu31_9(unknown)                                       = ^CallSideEffect                                        : ~m?
-#   31|     v31_10(void)                                          = ^IndirectReadSideEffect[0]                             : &:r31_7, ~m?
-#   31|     mu31_11(shared_ptr<const int>)                        = ^IndirectMustWriteSideEffect[-1]                       : &:r31_2
+#   31|     mu31_10(shared_ptr<const int>)                        = ^IndirectMustWriteSideEffect[-1]                       : &:r31_2
+#   31|     v31_11(void)                                          = ^IndirectReadSideEffect[0]                             : &:r31_7, ~m?
 #   31|     r31_12(shared_ptr<const int>)                         = Load[#temp31:26]                                       : &:r31_2, ~m?
 #   31|     v31_13(void)                                          = Call[shared_ptr_const_int]                             : func:r31_1, 0:r31_12
 #   31|     mu31_14(unknown)                                      = ^CallSideEffect                                        : ~m?
@@ -8013,8 +8013,8 @@ smart_ptr.cpp:
 #   35|     r35_7(shared_ptr<int *const> &)                       = CopyValue                                              : r35_6
 #   35|     v35_8(void)                                           = Call[shared_ptr]                                       : func:r35_4, this:r35_2, 0:r35_7
 #   35|     mu35_9(unknown)                                       = ^CallSideEffect                                        : ~m?
-#   35|     v35_10(void)                                          = ^IndirectReadSideEffect[0]                             : &:r35_7, ~m?
-#   35|     mu35_11(shared_ptr<int *const>)                       = ^IndirectMustWriteSideEffect[-1]                       : &:r35_2
+#   35|     mu35_10(shared_ptr<int *const>)                       = ^IndirectMustWriteSideEffect[-1]                       : &:r35_2
+#   35|     v35_11(void)                                          = ^IndirectReadSideEffect[0]                             : &:r35_7, ~m?
 #   35|     r35_12(shared_ptr<int *const>)                        = Load[#temp35:30]                                       : &:r35_2, ~m?
 #   35|     v35_13(void)                                          = Call[shared_ptr_const_int_ptr]                         : func:r35_1, 0:r35_12
 #   35|     mu35_14(unknown)                                      = ^CallSideEffect                                        : ~m?
@@ -8031,8 +8031,8 @@ smart_ptr.cpp:
 #   39|     r39_7(shared_ptr<shared_ptr<const int>> &)            = CopyValue                                              : r39_6
 #   39|     v39_8(void)                                           = Call[shared_ptr]                                       : func:r39_4, this:r39_2, 0:r39_7
 #   39|     mu39_9(unknown)                                       = ^CallSideEffect                                        : ~m?
-#   39|     v39_10(void)                                          = ^IndirectReadSideEffect[0]                             : &:r39_7, ~m?
-#   39|     mu39_11(shared_ptr<shared_ptr<const int>>)            = ^IndirectMustWriteSideEffect[-1]                       : &:r39_2
+#   39|     mu39_10(shared_ptr<shared_ptr<const int>>)            = ^IndirectMustWriteSideEffect[-1]                       : &:r39_2
+#   39|     v39_11(void)                                          = ^IndirectReadSideEffect[0]                             : &:r39_7, ~m?
 #   39|     r39_12(shared_ptr<shared_ptr<const int>>)             = Load[#temp39:37]                                       : &:r39_2, ~m?
 #   39|     v39_13(void)                                          = Call[shared_ptr_shared_ptr_const_int]                  : func:r39_1, 0:r39_12
 #   39|     mu39_14(unknown)                                      = ^CallSideEffect                                        : ~m?
@@ -8049,8 +8049,8 @@ smart_ptr.cpp:
 #   43|     r43_7(shared_ptr<const shared_ptr<int>> &)            = CopyValue                                              : r43_6
 #   43|     v43_8(void)                                           = Call[shared_ptr]                                       : func:r43_4, this:r43_2, 0:r43_7
 #   43|     mu43_9(unknown)                                       = ^CallSideEffect                                        : ~m?
-#   43|     v43_10(void)                                          = ^IndirectReadSideEffect[0]                             : &:r43_7, ~m?
-#   43|     mu43_11(shared_ptr<const shared_ptr<int>>)            = ^IndirectMustWriteSideEffect[-1]                       : &:r43_2
+#   43|     mu43_10(shared_ptr<const shared_ptr<int>>)            = ^IndirectMustWriteSideEffect[-1]                       : &:r43_2
+#   43|     v43_11(void)                                          = ^IndirectReadSideEffect[0]                             : &:r43_7, ~m?
 #   43|     r43_12(shared_ptr<const shared_ptr<int>>)             = Load[#temp43:37]                                       : &:r43_2, ~m?
 #   43|     v43_13(void)                                          = Call[shared_ptr_const_shared_ptr_int]                  : func:r43_1, 0:r43_12
 #   43|     mu43_14(unknown)                                      = ^CallSideEffect                                        : ~m?
@@ -8067,8 +8067,8 @@ smart_ptr.cpp:
 #   47|     r47_7(shared_ptr<const shared_ptr<const int>> &)      = CopyValue                                              : r47_6
 #   47|     v47_8(void)                                           = Call[shared_ptr]                                       : func:r47_4, this:r47_2, 0:r47_7
 #   47|     mu47_9(unknown)                                       = ^CallSideEffect                                        : ~m?
-#   47|     v47_10(void)                                          = ^IndirectReadSideEffect[0]                             : &:r47_7, ~m?
-#   47|     mu47_11(shared_ptr<const shared_ptr<const int>>)      = ^IndirectMustWriteSideEffect[-1]                       : &:r47_2
+#   47|     mu47_10(shared_ptr<const shared_ptr<const int>>)      = ^IndirectMustWriteSideEffect[-1]                       : &:r47_2
+#   47|     v47_11(void)                                          = ^IndirectReadSideEffect[0]                             : &:r47_7, ~m?
 #   47|     r47_12(shared_ptr<const shared_ptr<const int>>)       = Load[#temp47:43]                                       : &:r47_2, ~m?
 #   47|     v47_13(void)                                          = Call[shared_ptr_const_shared_ptr_const_int]            : func:r47_1, 0:r47_12
 #   47|     mu47_14(unknown)                                      = ^CallSideEffect                                        : ~m?

cpp/ql/test/library-tests/ir/ssa/aliased_ssa_ir.expected

@@ -1398,13 +1398,13 @@ ssa.cpp:
 #  294|     v294_25(void)           = Call[A]                         : func:r294_9, this:r294_8, 0:r294_16
 #  294|     m294_26(unknown)        = ^CallSideEffect                 : ~m294_22
 #  294|     m294_27(unknown)        = Chi                             : total:m294_22, partial:m294_26
-#  294|     v294_28(void)           = ^BufferReadSideEffect[0]        : &:r294_16, ~m294_24
-#  294|     m294_29(A)              = ^IndirectMayWriteSideEffect[-1] : &:r294_8
-#  294|     m294_30(unknown)        = Chi                             : total:m294_7, partial:m294_29
+#  294|     m294_28(A)              = ^IndirectMayWriteSideEffect[-1] : &:r294_8
+#  294|     m294_29(unknown)        = Chi                             : total:m294_7, partial:m294_28
+#  294|     v294_30(void)           = ^BufferReadSideEffect[0]        : &:r294_16, ~m294_24
 #  294|     m294_31(unknown)        = ^BufferMayWriteSideEffect[0]    : &:r294_16
 #  294|     m294_32(unknown)        = Chi                             : total:m294_24, partial:m294_31
 #  294|     r294_33(glval<int>)     = FieldAddress[i]                 : r294_8
-#  294|     r294_34(int)            = Load[?]                         : &:r294_33, ~m294_30
+#  294|     r294_34(int)            = Load[?]                         : &:r294_33, ~m294_29
 #  294|     m294_35(int)            = Store[j]                        : &:r294_1, r294_34
 #  295|     r295_1(glval<A *>)      = VariableAddress[a]              : 
 #  295|     r295_2(glval<unknown>)  = FunctionAddress[operator new]   : 

cpp/ql/test/library-tests/ir/ssa/aliased_ssa_ir_unsound.expected

@@ -1392,13 +1392,13 @@ ssa.cpp:
 #  294|     v294_25(void)           = Call[A]                         : func:r294_9, this:r294_8, 0:r294_16
 #  294|     m294_26(unknown)        = ^CallSideEffect                 : ~m294_22
 #  294|     m294_27(unknown)        = Chi                             : total:m294_22, partial:m294_26
-#  294|     v294_28(void)           = ^BufferReadSideEffect[0]        : &:r294_16, ~m294_24
-#  294|     m294_29(A)              = ^IndirectMayWriteSideEffect[-1] : &:r294_8
-#  294|     m294_30(unknown)        = Chi                             : total:m294_7, partial:m294_29
+#  294|     m294_28(A)              = ^IndirectMayWriteSideEffect[-1] : &:r294_8
+#  294|     m294_29(unknown)        = Chi                             : total:m294_7, partial:m294_28
+#  294|     v294_30(void)           = ^BufferReadSideEffect[0]        : &:r294_16, ~m294_24
 #  294|     m294_31(unknown)        = ^BufferMayWriteSideEffect[0]    : &:r294_16
 #  294|     m294_32(unknown)        = Chi                             : total:m294_24, partial:m294_31
 #  294|     r294_33(glval<int>)     = FieldAddress[i]                 : r294_8
-#  294|     r294_34(int)            = Load[?]                         : &:r294_33, ~m294_30
+#  294|     r294_34(int)            = Load[?]                         : &:r294_33, ~m294_29
 #  294|     m294_35(int)            = Store[j]                        : &:r294_1, r294_34
 #  295|     r295_1(glval<A *>)      = VariableAddress[a]              : 
 #  295|     r295_2(glval<unknown>)  = FunctionAddress[operator new]   : 

cpp/ql/test/library-tests/ir/ssa/unaliased_ssa_ir.expected

@@ -1285,8 +1285,8 @@ ssa.cpp:
 #  294|     mu294_20(A)             = ^IndirectMayWriteSideEffect[-1] : &:r294_14
 #  294|     v294_21(void)           = Call[A]                         : func:r294_8, this:r294_7, 0:r294_14
 #  294|     mu294_22(unknown)       = ^CallSideEffect                 : ~m?
-#  294|     v294_23(void)           = ^BufferReadSideEffect[0]        : &:r294_14, ~m?
-#  294|     mu294_24(A)             = ^IndirectMayWriteSideEffect[-1] : &:r294_7
+#  294|     mu294_23(A)             = ^IndirectMayWriteSideEffect[-1] : &:r294_7
+#  294|     v294_24(void)           = ^BufferReadSideEffect[0]        : &:r294_14, ~m?
 #  294|     mu294_25(unknown)       = ^BufferMayWriteSideEffect[0]    : &:r294_14
 #  294|     r294_26(glval<int>)     = FieldAddress[i]                 : r294_7
 #  294|     r294_27(int)            = Load[?]                         : &:r294_26, ~m?

cpp/ql/test/library-tests/ir/ssa/unaliased_ssa_ir_unsound.expected

@@ -1285,8 +1285,8 @@ ssa.cpp:
 #  294|     mu294_20(A)             = ^IndirectMayWriteSideEffect[-1] : &:r294_14
 #  294|     v294_21(void)           = Call[A]                         : func:r294_8, this:r294_7, 0:r294_14
 #  294|     mu294_22(unknown)       = ^CallSideEffect                 : ~m?
-#  294|     v294_23(void)           = ^BufferReadSideEffect[0]        : &:r294_14, ~m?
-#  294|     mu294_24(A)             = ^IndirectMayWriteSideEffect[-1] : &:r294_7
+#  294|     mu294_23(A)             = ^IndirectMayWriteSideEffect[-1] : &:r294_7
+#  294|     v294_24(void)           = ^BufferReadSideEffect[0]        : &:r294_14, ~m?
 #  294|     mu294_25(unknown)       = ^BufferMayWriteSideEffect[0]    : &:r294_14
 #  294|     r294_26(glval<int>)     = FieldAddress[i]                 : r294_7
 #  294|     r294_27(int)            = Load[?]                         : &:r294_26, ~m?

cpp/ql/test/library-tests/special_members/generated_copy/assign.expected

@@ -11,7 +11,6 @@
 | difference::Base | can | does NOT | have implicit copy assignment |
 | difference::OnlyAssign | can | does | have implicit copy assignment |
 | difference::OnlyCtor | can NOT | does NOT | have implicit copy assignment |
-| instantiated_explicit_ctor::Wrapper<int> | can | does | have implicit copy assignment |
 | moves::MoveAssign | can NOT | does NOT | have implicit copy assignment |
 | moves::MoveCtor | can NOT | does NOT | have implicit copy assignment |
 | private_cc::C | can | does NOT | have implicit copy assignment |

cpp/ql/test/library-tests/special_members/generated_copy/copy.cpp

@@ -131,21 +131,3 @@ namespace difference {
   class OnlyAssign : Base {
   };
 }
-
-namespace instantiated_explicit_ctor {
-  template<class T>
-  class Wrapper {
-  public:
-    Wrapper(Wrapper<T> &other) {
-      m_t = other.m_t;
-    }
-    
-    Wrapper() {
-      m_t = 0;
-    }
-  private:
-    T m_t;
-  };
-
-  Wrapper<int> wrapped_int;
-}

cpp/ql/test/library-tests/special_members/generated_copy/ctor.expected

@@ -11,7 +11,6 @@
 | difference::Base | can | does NOT | have implicit copy constructor |
 | difference::OnlyAssign | can NOT | does NOT | have implicit copy constructor |
 | difference::OnlyCtor | can | does | have implicit copy constructor |
-| instantiated_explicit_ctor::Wrapper<int> | can | does NOT | have implicit copy constructor |
 | moves::MoveAssign | can NOT | does NOT | have implicit copy constructor |
 | moves::MoveCtor | can NOT | does NOT | have implicit copy constructor |
 | private_cc::C | can | does NOT | have implicit copy constructor |

cpp/ql/test/library-tests/special_members/generated_copy/functions.expected

@@ -86,9 +86,5 @@
 | copy.cpp:131:9:131:9 | OnlyAssign | deleted |  |
 | copy.cpp:131:9:131:9 | operator= |  |  |
 | copy.cpp:131:9:131:9 | operator= |  |  |
-| copy.cpp:137:9:137:9 | operator= |  |  |
-| copy.cpp:139:5:139:11 | Wrapper |  |  |
-| copy.cpp:143:5:143:5 | Wrapper |  |  |
-| copy.cpp:143:5:143:11 | Wrapper |  |  |
 | file://:0:0:0:0 | operator= |  |  |
 | file://:0:0:0:0 | operator= |  |  |

cpp/ql/test/query-tests/Best Practices/Hiding/DeclarationHidesVariable/hiding.cpp

@@ -1,4 +1,4 @@
-// semmle-extractor-options: -std=c++17
+
 void f(void) {
     if (1) {
         int i;
@@ -30,12 +30,3 @@ void nestedRangeBasedFor() {
     for (auto y : ys) // GOOD
       x = y = 0;
 }
-
-void structuredBinding() {
-  int xs[1] = {1};
-  auto [x] = xs;
-  {
-    auto [x] = xs; // BAD [NOT DETECTED]
-    auto [y] = xs; // GOOD
-  }
-}

cpp/ql/test/query-tests/Best Practices/RuleOfTwo/RuleOfTwo.cpp

@@ -117,8 +117,12 @@ struct HasVPV {
   }
 };
 
-// NOT OK: the relevant copy constructor of ProtectedVolatile is
-// accessible, so our class will get a generated copy constructor.
+// FALSE NEGATIVE: the relevant copy constructor of ProtectedVolatile is
+// accessible, so our class will get a generated copy constructor. Our query
+// thinks the copy constructor is inaccessible because it picks up the other
+// copy constructor. To fix this, our library should be changed to distinguish
+// between copy constructors and resolve overloading properly instead of
+// assuming that there is at most one.
 struct HasPV {
   ProtectedVolatile pv;
   HasPV& operator=(const HasPV& that) {

cpp/ql/test/query-tests/Best Practices/RuleOfTwo/RuleOfTwo.expected

@@ -1,6 +1,6 @@
 | RuleOfTwo.cpp:4:3:4:17 | CopyButNoAssign | No matching copy assignment operator in class CopyButNoAssign. It is good practice to match a copy constructor with a copy assignment operator. |
 | RuleOfTwo.cpp:10:20:10:28 | operator= | No matching copy constructor in class AssignButNoCopy. It is good practice to match a copy assignment operator with a copy constructor. |
 | RuleOfTwo.cpp:81:18:81:26 | operator= | No matching copy constructor in class MyClassFriend. It is good practice to match a copy assignment operator with a copy constructor. |
-| RuleOfTwo.cpp:140:3:140:20 | IsAProtectedAssign | No matching copy assignment operator in class IsAProtectedAssign. It is good practice to match a copy constructor with a copy assignment operator. |
-| RuleOfTwo.cpp:163:19:163:27 | operator= | No matching copy constructor in class IsAProtectedCC. It is good practice to match a copy assignment operator with a copy constructor. |
-| RuleOfTwo.cpp:308:5:308:8 | R1_C | No matching copy assignment operator in class R1_C. It is good practice to match a copy constructor with a copy assignment operator. |
+| RuleOfTwo.cpp:144:3:144:20 | IsAProtectedAssign | No matching copy assignment operator in class IsAProtectedAssign. It is good practice to match a copy constructor with a copy assignment operator. |
+| RuleOfTwo.cpp:167:19:167:27 | operator= | No matching copy constructor in class IsAProtectedCC. It is good practice to match a copy assignment operator with a copy constructor. |
+| RuleOfTwo.cpp:312:5:312:8 | R1_C | No matching copy assignment operator in class R1_C. It is good practice to match a copy constructor with a copy assignment operator. |

cpp/ql/test/query-tests/Likely Bugs/Memory Management/ReturnStackAllocatedMemory/ReturnStackAllocatedMemory.expected

@@ -1,231 +1,8 @@
-edges
-| test.cpp:17:9:17:11 | & ... | test.cpp:17:9:17:11 | StoreValue |
-| test.cpp:17:10:17:11 | Unary | test.cpp:17:9:17:11 | & ... |
-| test.cpp:17:10:17:11 | mc | test.cpp:17:10:17:11 | Unary |
-| test.cpp:23:17:23:19 | & ... | test.cpp:23:17:23:19 | StoreValue |
-| test.cpp:23:17:23:19 | Store | test.cpp:25:9:25:11 | Load |
-| test.cpp:23:17:23:19 | StoreValue | test.cpp:23:17:23:19 | Store |
-| test.cpp:23:18:23:19 | Unary | test.cpp:23:17:23:19 | & ... |
-| test.cpp:23:18:23:19 | mc | test.cpp:23:18:23:19 | Unary |
-| test.cpp:25:9:25:11 | Load | test.cpp:25:9:25:11 | ptr |
-| test.cpp:25:9:25:11 | ptr | test.cpp:25:9:25:11 | StoreValue |
-| test.cpp:39:17:39:18 | (reference to) | test.cpp:39:17:39:18 | StoreValue |
-| test.cpp:39:17:39:18 | Store | test.cpp:41:10:41:12 | Load |
-| test.cpp:39:17:39:18 | StoreValue | test.cpp:39:17:39:18 | Store |
-| test.cpp:39:17:39:18 | Unary | test.cpp:39:17:39:18 | (reference to) |
-| test.cpp:39:17:39:18 | mc | test.cpp:39:17:39:18 | Unary |
-| test.cpp:41:9:41:12 | & ... | test.cpp:41:9:41:12 | StoreValue |
-| test.cpp:41:10:41:12 | (reference dereference) | test.cpp:41:10:41:12 | Unary |
-| test.cpp:41:10:41:12 | Load | test.cpp:41:10:41:12 | ref |
-| test.cpp:41:10:41:12 | Unary | test.cpp:41:9:41:12 | & ... |
-| test.cpp:41:10:41:12 | Unary | test.cpp:41:10:41:12 | (reference dereference) |
-| test.cpp:41:10:41:12 | ref | test.cpp:41:10:41:12 | Unary |
-| test.cpp:47:9:47:10 | (reference to) | test.cpp:47:9:47:10 | StoreValue |
-| test.cpp:47:9:47:10 | Unary | test.cpp:47:9:47:10 | (reference to) |
-| test.cpp:47:9:47:10 | mc | test.cpp:47:9:47:10 | Unary |
-| test.cpp:54:9:54:15 | & ... | test.cpp:54:9:54:15 | StoreValue |
-| test.cpp:54:11:54:12 | Unary | test.cpp:54:14:54:14 | a |
-| test.cpp:54:11:54:12 | mc | test.cpp:54:11:54:12 | Unary |
-| test.cpp:54:14:54:14 | Unary | test.cpp:54:9:54:15 | & ... |
-| test.cpp:54:14:54:14 | a | test.cpp:54:14:54:14 | Unary |
-| test.cpp:89:3:89:11 | Store | test.cpp:92:9:92:11 | Load |
-| test.cpp:89:9:89:11 | & ... | test.cpp:89:9:89:11 | StoreValue |
-| test.cpp:89:9:89:11 | StoreValue | test.cpp:89:3:89:11 | Store |
-| test.cpp:89:10:89:11 | Unary | test.cpp:89:9:89:11 | & ... |
-| test.cpp:89:10:89:11 | mc | test.cpp:89:10:89:11 | Unary |
-| test.cpp:92:9:92:11 | Load | test.cpp:92:9:92:11 | ptr |
-| test.cpp:92:9:92:11 | ptr | test.cpp:92:9:92:11 | StoreValue |
-| test.cpp:112:9:112:11 | Unary | test.cpp:112:9:112:11 | array to pointer conversion |
-| test.cpp:112:9:112:11 | arr | test.cpp:112:9:112:11 | Unary |
-| test.cpp:112:9:112:11 | array to pointer conversion | test.cpp:112:9:112:11 | StoreValue |
-| test.cpp:119:9:119:18 | & ... | test.cpp:119:9:119:18 | StoreValue |
-| test.cpp:119:11:119:13 | Left | test.cpp:119:11:119:17 | access to array |
-| test.cpp:119:11:119:13 | Unary | test.cpp:119:11:119:13 | array to pointer conversion |
-| test.cpp:119:11:119:13 | arr | test.cpp:119:11:119:13 | Unary |
-| test.cpp:119:11:119:13 | array to pointer conversion | test.cpp:119:11:119:13 | Left |
-| test.cpp:119:11:119:17 | Unary | test.cpp:119:9:119:18 | & ... |
-| test.cpp:119:11:119:17 | access to array | test.cpp:119:11:119:17 | Unary |
-| test.cpp:134:2:134:14 | Store | test.cpp:135:2:135:4 | Load |
-| test.cpp:134:8:134:10 | Left | test.cpp:134:8:134:14 | ... + ... |
-| test.cpp:134:8:134:10 | Unary | test.cpp:134:8:134:10 | array to pointer conversion |
-| test.cpp:134:8:134:10 | arr | test.cpp:134:8:134:10 | Unary |
-| test.cpp:134:8:134:10 | array to pointer conversion | test.cpp:134:8:134:10 | Left |
-| test.cpp:134:8:134:14 | ... + ... | test.cpp:134:8:134:14 | StoreValue |
-| test.cpp:134:8:134:14 | StoreValue | test.cpp:134:2:134:14 | Store |
-| test.cpp:135:2:135:4 | Left | test.cpp:135:2:135:6 | PointerAdd |
-| test.cpp:135:2:135:4 | Load | test.cpp:135:2:135:4 | ptr |
-| test.cpp:135:2:135:4 | ptr | test.cpp:135:2:135:4 | Left |
-| test.cpp:135:2:135:6 | PointerAdd | test.cpp:135:2:135:6 | StoreValue |
-| test.cpp:135:2:135:6 | Store | test.cpp:137:9:137:11 | Load |
-| test.cpp:135:2:135:6 | StoreValue | test.cpp:135:2:135:6 | Store |
-| test.cpp:137:9:137:11 | Load | test.cpp:137:9:137:11 | ptr |
-| test.cpp:137:9:137:11 | ptr | test.cpp:137:9:137:11 | StoreValue |
-| test.cpp:170:26:170:41 | (void *)... | test.cpp:170:26:170:41 | StoreValue |
-| test.cpp:170:26:170:41 | Store | test.cpp:171:10:171:23 | Load |
-| test.cpp:170:26:170:41 | StoreValue | test.cpp:170:26:170:41 | Store |
-| test.cpp:170:34:170:41 | & ... | test.cpp:170:34:170:41 | Unary |
-| test.cpp:170:34:170:41 | Unary | test.cpp:170:26:170:41 | (void *)... |
-| test.cpp:170:35:170:41 | Unary | test.cpp:170:34:170:41 | & ... |
-| test.cpp:170:35:170:41 | myLocal | test.cpp:170:35:170:41 | Unary |
-| test.cpp:171:10:171:23 | Load | test.cpp:171:10:171:23 | pointerToLocal |
-| test.cpp:171:10:171:23 | pointerToLocal | test.cpp:171:10:171:23 | StoreValue |
-| test.cpp:176:25:176:34 | Store | test.cpp:177:10:177:23 | Load |
-| test.cpp:176:25:176:34 | StoreValue | test.cpp:176:25:176:34 | Store |
-| test.cpp:176:25:176:34 | Unary | test.cpp:176:25:176:34 | array to pointer conversion |
-| test.cpp:176:25:176:34 | array to pointer conversion | test.cpp:176:25:176:34 | StoreValue |
-| test.cpp:176:25:176:34 | localArray | test.cpp:176:25:176:34 | Unary |
-| test.cpp:177:10:177:23 | (void *)... | test.cpp:177:10:177:23 | StoreValue |
-| test.cpp:177:10:177:23 | Load | test.cpp:177:10:177:23 | pointerToLocal |
-| test.cpp:177:10:177:23 | Unary | test.cpp:177:10:177:23 | (void *)... |
-| test.cpp:177:10:177:23 | pointerToLocal | test.cpp:177:10:177:23 | Unary |
-| test.cpp:182:21:182:27 | (reference to) | test.cpp:182:21:182:27 | StoreValue |
-| test.cpp:182:21:182:27 | Store | test.cpp:183:10:183:19 | Load |
-| test.cpp:182:21:182:27 | StoreValue | test.cpp:182:21:182:27 | Store |
-| test.cpp:182:21:182:27 | Unary | test.cpp:182:21:182:27 | (reference to) |
-| test.cpp:182:21:182:27 | myLocal | test.cpp:182:21:182:27 | Unary |
-| test.cpp:183:10:183:19 | (reference dereference) | test.cpp:183:10:183:19 | Unary |
-| test.cpp:183:10:183:19 | (reference to) | test.cpp:183:10:183:19 | StoreValue |
-| test.cpp:183:10:183:19 | Load | test.cpp:183:10:183:19 | refToLocal |
-| test.cpp:183:10:183:19 | Unary | test.cpp:183:10:183:19 | (reference dereference) |
-| test.cpp:183:10:183:19 | Unary | test.cpp:183:10:183:19 | (reference to) |
-| test.cpp:183:10:183:19 | refToLocal | test.cpp:183:10:183:19 | Unary |
-| test.cpp:189:16:189:16 | (reference to) | test.cpp:189:16:189:16 | StoreValue |
-| test.cpp:189:16:189:16 | Store | test.cpp:190:10:190:13 | Load |
-| test.cpp:189:16:189:16 | StoreValue | test.cpp:189:16:189:16 | Store |
-| test.cpp:189:16:189:16 | Unary | test.cpp:189:16:189:16 | (reference to) |
-| test.cpp:189:16:189:16 | p | test.cpp:189:16:189:16 | Unary |
-| test.cpp:190:10:190:13 | (reference dereference) | test.cpp:190:10:190:13 | Unary |
-| test.cpp:190:10:190:13 | (reference to) | test.cpp:190:10:190:13 | StoreValue |
-| test.cpp:190:10:190:13 | Load | test.cpp:190:10:190:13 | pRef |
-| test.cpp:190:10:190:13 | Unary | test.cpp:190:10:190:13 | (reference dereference) |
-| test.cpp:190:10:190:13 | Unary | test.cpp:190:10:190:13 | (reference to) |
-| test.cpp:190:10:190:13 | pRef | test.cpp:190:10:190:13 | Unary |
-nodes
-| test.cpp:17:9:17:11 | & ... | semmle.label | & ... |
-| test.cpp:17:9:17:11 | StoreValue | semmle.label | StoreValue |
-| test.cpp:17:10:17:11 | Unary | semmle.label | Unary |
-| test.cpp:17:10:17:11 | mc | semmle.label | mc |
-| test.cpp:23:17:23:19 | & ... | semmle.label | & ... |
-| test.cpp:23:17:23:19 | Store | semmle.label | Store |
-| test.cpp:23:17:23:19 | StoreValue | semmle.label | StoreValue |
-| test.cpp:23:18:23:19 | Unary | semmle.label | Unary |
-| test.cpp:23:18:23:19 | mc | semmle.label | mc |
-| test.cpp:25:9:25:11 | Load | semmle.label | Load |
-| test.cpp:25:9:25:11 | StoreValue | semmle.label | StoreValue |
-| test.cpp:25:9:25:11 | ptr | semmle.label | ptr |
-| test.cpp:39:17:39:18 | (reference to) | semmle.label | (reference to) |
-| test.cpp:39:17:39:18 | Store | semmle.label | Store |
-| test.cpp:39:17:39:18 | StoreValue | semmle.label | StoreValue |
-| test.cpp:39:17:39:18 | Unary | semmle.label | Unary |
-| test.cpp:39:17:39:18 | mc | semmle.label | mc |
-| test.cpp:41:9:41:12 | & ... | semmle.label | & ... |
-| test.cpp:41:9:41:12 | StoreValue | semmle.label | StoreValue |
-| test.cpp:41:10:41:12 | (reference dereference) | semmle.label | (reference dereference) |
-| test.cpp:41:10:41:12 | Load | semmle.label | Load |
-| test.cpp:41:10:41:12 | Unary | semmle.label | Unary |
-| test.cpp:41:10:41:12 | Unary | semmle.label | Unary |
-| test.cpp:41:10:41:12 | ref | semmle.label | ref |
-| test.cpp:47:9:47:10 | (reference to) | semmle.label | (reference to) |
-| test.cpp:47:9:47:10 | StoreValue | semmle.label | StoreValue |
-| test.cpp:47:9:47:10 | Unary | semmle.label | Unary |
-| test.cpp:47:9:47:10 | mc | semmle.label | mc |
-| test.cpp:54:9:54:15 | & ... | semmle.label | & ... |
-| test.cpp:54:9:54:15 | StoreValue | semmle.label | StoreValue |
-| test.cpp:54:11:54:12 | Unary | semmle.label | Unary |
-| test.cpp:54:11:54:12 | mc | semmle.label | mc |
-| test.cpp:54:14:54:14 | Unary | semmle.label | Unary |
-| test.cpp:54:14:54:14 | a | semmle.label | a |
-| test.cpp:89:3:89:11 | Store | semmle.label | Store |
-| test.cpp:89:9:89:11 | & ... | semmle.label | & ... |
-| test.cpp:89:9:89:11 | StoreValue | semmle.label | StoreValue |
-| test.cpp:89:10:89:11 | Unary | semmle.label | Unary |
-| test.cpp:89:10:89:11 | mc | semmle.label | mc |
-| test.cpp:92:9:92:11 | Load | semmle.label | Load |
-| test.cpp:92:9:92:11 | StoreValue | semmle.label | StoreValue |
-| test.cpp:92:9:92:11 | ptr | semmle.label | ptr |
-| test.cpp:112:9:112:11 | StoreValue | semmle.label | StoreValue |
-| test.cpp:112:9:112:11 | Unary | semmle.label | Unary |
-| test.cpp:112:9:112:11 | arr | semmle.label | arr |
-| test.cpp:112:9:112:11 | array to pointer conversion | semmle.label | array to pointer conversion |
-| test.cpp:119:9:119:18 | & ... | semmle.label | & ... |
-| test.cpp:119:9:119:18 | StoreValue | semmle.label | StoreValue |
-| test.cpp:119:11:119:13 | Left | semmle.label | Left |
-| test.cpp:119:11:119:13 | Unary | semmle.label | Unary |
-| test.cpp:119:11:119:13 | arr | semmle.label | arr |
-| test.cpp:119:11:119:13 | array to pointer conversion | semmle.label | array to pointer conversion |
-| test.cpp:119:11:119:17 | Unary | semmle.label | Unary |
-| test.cpp:119:11:119:17 | access to array | semmle.label | access to array |
-| test.cpp:134:2:134:14 | Store | semmle.label | Store |
-| test.cpp:134:8:134:10 | Left | semmle.label | Left |
-| test.cpp:134:8:134:10 | Unary | semmle.label | Unary |
-| test.cpp:134:8:134:10 | arr | semmle.label | arr |
-| test.cpp:134:8:134:10 | array to pointer conversion | semmle.label | array to pointer conversion |
-| test.cpp:134:8:134:14 | ... + ... | semmle.label | ... + ... |
-| test.cpp:134:8:134:14 | StoreValue | semmle.label | StoreValue |
-| test.cpp:135:2:135:4 | Left | semmle.label | Left |
-| test.cpp:135:2:135:4 | Load | semmle.label | Load |
-| test.cpp:135:2:135:4 | ptr | semmle.label | ptr |
-| test.cpp:135:2:135:6 | PointerAdd | semmle.label | PointerAdd |
-| test.cpp:135:2:135:6 | Store | semmle.label | Store |
-| test.cpp:135:2:135:6 | StoreValue | semmle.label | StoreValue |
-| test.cpp:137:9:137:11 | Load | semmle.label | Load |
-| test.cpp:137:9:137:11 | StoreValue | semmle.label | StoreValue |
-| test.cpp:137:9:137:11 | ptr | semmle.label | ptr |
-| test.cpp:170:26:170:41 | (void *)... | semmle.label | (void *)... |
-| test.cpp:170:26:170:41 | Store | semmle.label | Store |
-| test.cpp:170:26:170:41 | StoreValue | semmle.label | StoreValue |
-| test.cpp:170:34:170:41 | & ... | semmle.label | & ... |
-| test.cpp:170:34:170:41 | Unary | semmle.label | Unary |
-| test.cpp:170:35:170:41 | Unary | semmle.label | Unary |
-| test.cpp:170:35:170:41 | myLocal | semmle.label | myLocal |
-| test.cpp:171:10:171:23 | Load | semmle.label | Load |
-| test.cpp:171:10:171:23 | StoreValue | semmle.label | StoreValue |
-| test.cpp:171:10:171:23 | pointerToLocal | semmle.label | pointerToLocal |
-| test.cpp:176:25:176:34 | Store | semmle.label | Store |
-| test.cpp:176:25:176:34 | StoreValue | semmle.label | StoreValue |
-| test.cpp:176:25:176:34 | Unary | semmle.label | Unary |
-| test.cpp:176:25:176:34 | array to pointer conversion | semmle.label | array to pointer conversion |
-| test.cpp:176:25:176:34 | localArray | semmle.label | localArray |
-| test.cpp:177:10:177:23 | (void *)... | semmle.label | (void *)... |
-| test.cpp:177:10:177:23 | Load | semmle.label | Load |
-| test.cpp:177:10:177:23 | StoreValue | semmle.label | StoreValue |
-| test.cpp:177:10:177:23 | Unary | semmle.label | Unary |
-| test.cpp:177:10:177:23 | pointerToLocal | semmle.label | pointerToLocal |
-| test.cpp:182:21:182:27 | (reference to) | semmle.label | (reference to) |
-| test.cpp:182:21:182:27 | Store | semmle.label | Store |
-| test.cpp:182:21:182:27 | StoreValue | semmle.label | StoreValue |
-| test.cpp:182:21:182:27 | Unary | semmle.label | Unary |
-| test.cpp:182:21:182:27 | myLocal | semmle.label | myLocal |
-| test.cpp:183:10:183:19 | (reference dereference) | semmle.label | (reference dereference) |
-| test.cpp:183:10:183:19 | (reference to) | semmle.label | (reference to) |
-| test.cpp:183:10:183:19 | Load | semmle.label | Load |
-| test.cpp:183:10:183:19 | StoreValue | semmle.label | StoreValue |
-| test.cpp:183:10:183:19 | Unary | semmle.label | Unary |
-| test.cpp:183:10:183:19 | Unary | semmle.label | Unary |
-| test.cpp:183:10:183:19 | refToLocal | semmle.label | refToLocal |
-| test.cpp:189:16:189:16 | (reference to) | semmle.label | (reference to) |
-| test.cpp:189:16:189:16 | Store | semmle.label | Store |
-| test.cpp:189:16:189:16 | StoreValue | semmle.label | StoreValue |
-| test.cpp:189:16:189:16 | Unary | semmle.label | Unary |
-| test.cpp:189:16:189:16 | p | semmle.label | p |
-| test.cpp:190:10:190:13 | (reference dereference) | semmle.label | (reference dereference) |
-| test.cpp:190:10:190:13 | (reference to) | semmle.label | (reference to) |
-| test.cpp:190:10:190:13 | Load | semmle.label | Load |
-| test.cpp:190:10:190:13 | StoreValue | semmle.label | StoreValue |
-| test.cpp:190:10:190:13 | Unary | semmle.label | Unary |
-| test.cpp:190:10:190:13 | Unary | semmle.label | Unary |
-| test.cpp:190:10:190:13 | pRef | semmle.label | pRef |
-#select
-| test.cpp:17:9:17:11 | StoreValue | test.cpp:17:10:17:11 | mc | test.cpp:17:9:17:11 | StoreValue | May return stack-allocated memory from $@. | test.cpp:17:10:17:11 | mc | mc |
-| test.cpp:25:9:25:11 | StoreValue | test.cpp:23:18:23:19 | mc | test.cpp:25:9:25:11 | StoreValue | May return stack-allocated memory from $@. | test.cpp:23:18:23:19 | mc | mc |
-| test.cpp:41:9:41:12 | StoreValue | test.cpp:39:17:39:18 | mc | test.cpp:41:9:41:12 | StoreValue | May return stack-allocated memory from $@. | test.cpp:39:17:39:18 | mc | mc |
-| test.cpp:47:9:47:10 | StoreValue | test.cpp:47:9:47:10 | mc | test.cpp:47:9:47:10 | StoreValue | May return stack-allocated memory from $@. | test.cpp:47:9:47:10 | mc | mc |
-| test.cpp:54:9:54:15 | StoreValue | test.cpp:54:11:54:12 | mc | test.cpp:54:9:54:15 | StoreValue | May return stack-allocated memory from $@. | test.cpp:54:11:54:12 | mc | mc |
-| test.cpp:92:9:92:11 | StoreValue | test.cpp:89:10:89:11 | mc | test.cpp:92:9:92:11 | StoreValue | May return stack-allocated memory from $@. | test.cpp:89:10:89:11 | mc | mc |
-| test.cpp:112:9:112:11 | StoreValue | test.cpp:112:9:112:11 | arr | test.cpp:112:9:112:11 | StoreValue | May return stack-allocated memory from $@. | test.cpp:112:9:112:11 | arr | arr |
-| test.cpp:119:9:119:18 | StoreValue | test.cpp:119:11:119:13 | arr | test.cpp:119:9:119:18 | StoreValue | May return stack-allocated memory from $@. | test.cpp:119:11:119:13 | arr | arr |
-| test.cpp:137:9:137:11 | StoreValue | test.cpp:134:8:134:10 | arr | test.cpp:137:9:137:11 | StoreValue | May return stack-allocated memory from $@. | test.cpp:134:8:134:10 | arr | arr |
-| test.cpp:171:10:171:23 | StoreValue | test.cpp:170:35:170:41 | myLocal | test.cpp:171:10:171:23 | StoreValue | May return stack-allocated memory from $@. | test.cpp:170:35:170:41 | myLocal | myLocal |
-| test.cpp:177:10:177:23 | StoreValue | test.cpp:176:25:176:34 | localArray | test.cpp:177:10:177:23 | StoreValue | May return stack-allocated memory from $@. | test.cpp:176:25:176:34 | localArray | localArray |
-| test.cpp:183:10:183:19 | StoreValue | test.cpp:182:21:182:27 | myLocal | test.cpp:183:10:183:19 | StoreValue | May return stack-allocated memory from $@. | test.cpp:182:21:182:27 | myLocal | myLocal |
-| test.cpp:190:10:190:13 | StoreValue | test.cpp:189:16:189:16 | p | test.cpp:190:10:190:13 | StoreValue | May return stack-allocated memory from $@. | test.cpp:189:16:189:16 | p | p |
+| test.cpp:17:2:17:12 | return ... | May return stack-allocated memory from $@. | test.cpp:17:10:17:11 | mc | mc |
+| test.cpp:25:2:25:12 | return ... | May return stack-allocated memory from $@. | test.cpp:23:18:23:19 | mc | mc |
+| test.cpp:47:2:47:11 | return ... | May return stack-allocated memory from $@. | test.cpp:47:9:47:10 | mc | mc |
+| test.cpp:54:2:54:16 | return ... | May return stack-allocated memory from $@. | test.cpp:54:11:54:12 | mc | mc |
+| test.cpp:92:2:92:12 | return ... | May return stack-allocated memory from $@. | test.cpp:89:10:89:11 | mc | mc |
+| test.cpp:112:2:112:12 | return ... | May return stack-allocated memory from $@. | test.cpp:112:9:112:11 | arr | arr |
+| test.cpp:119:2:119:19 | return ... | May return stack-allocated memory from $@. | test.cpp:119:11:119:13 | arr | arr |
+| test.cpp:171:3:171:24 | return ... | May return stack-allocated memory from $@. | test.cpp:170:35:170:41 | myLocal | myLocal |

cpp/ql/test/query-tests/Likely Bugs/Memory Management/ReturnStackAllocatedMemory/test.cpp

@@ -38,7 +38,7 @@ MyClass *test4()
 	MyClass mc;
 	MyClass &ref = mc;
 
-	return &ref; // BAD
+	return &ref; // BAD [NOT DETECTED]
 }
 
 MyClass &test5()
@@ -134,7 +134,7 @@ char *testArray4()
 	ptr = arr + 1;
 	ptr++;
 
-	return ptr; // BAD
+	return ptr; // BAD [NOT DETECTED]
 }
 
 char *testArray5()
@@ -174,20 +174,20 @@ void *conversionBeforeDataFlow() {
 void *arrayConversionBeforeDataFlow() {
   int localArray[4];
   int *pointerToLocal = localArray; // has conversion
-  return pointerToLocal; // BAD
+  return pointerToLocal; // BAD [NOT DETECTED]
 }
 
 int &dataFlowThroughReference() {
   int myLocal;
   int &refToLocal = myLocal; // has conversion
-  return refToLocal; // BAD
+  return refToLocal; // BAD [NOT DETECTED]
 }
 
 int *&conversionInFlow() {
   int myLocal;
   int *p = &myLocal;
   int *&pRef = p; // has conversion in the middle of data flow
-  return pRef; // BAD
+  return pRef; // BAD [NOT DETECTED]
 }
 
 namespace std {
@@ -215,9 +215,4 @@ auto make_read_port()
   auto port = std::shared_ptr<int>(new int);
   auto ptr = port.get();
   return ptr; // GOOD
-}
-
-void* get_sp() {
-	int p;
-	return (void*)&p; // GOOD: The function name makes it sound like the programmer intended to get the value of the stack pointer.
 }

cpp/ql/test/query-tests/Security/CWE/CWE-311/semmle/tests/CleartextBufferWrite.expected

@@ -1,10 +1,18 @@
 edges
 | test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input |
+| test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input |
+| test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input |
+| test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input |
+| test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input indirection |
+| test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input indirection |
+subpaths
 nodes
-| test2.cpp:110:3:110:6 | call to gets | semmle.label | call to gets |
+| test.cpp:54:17:54:20 | argv | semmle.label | argv |
 | test.cpp:54:17:54:20 | argv | semmle.label | argv |
 | test.cpp:58:25:58:29 | input | semmle.label | input |
-subpaths
+| test.cpp:58:25:58:29 | input | semmle.label | input |
+| test.cpp:58:25:58:29 | input | semmle.label | input |
+| test.cpp:58:25:58:29 | input indirection | semmle.label | input indirection |
+| test.cpp:58:25:58:29 | input indirection | semmle.label | input indirection |
 #select
-| test2.cpp:110:3:110:6 | call to gets | test2.cpp:110:3:110:6 | call to gets | test2.cpp:110:3:110:6 | call to gets | This write into buffer 'password' may contain unencrypted data from $@ | test2.cpp:110:3:110:6 | call to gets | user input (String read by gets) |
-| test.cpp:58:3:58:9 | call to sprintf | test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input | This write into buffer 'passwd' may contain unencrypted data from $@ | test.cpp:54:17:54:20 | argv | user input (a command-line argument) |
+| test.cpp:58:3:58:9 | call to sprintf | test.cpp:54:17:54:20 | argv | test.cpp:58:25:58:29 | input | This write into buffer 'passwd' may contain unencrypted data from $@ | test.cpp:54:17:54:20 | argv | user input (argv) |

cpp/ql/test/query-tests/Security/CWE/CWE-311/semmle/tests/CleartextFileWrite.expected

@@ -1,42 +1,10 @@
-edges
-| test2.cpp:52:44:52:57 | password_tries | test2.cpp:52:40:52:58 | * ... |
-| test2.cpp:62:18:62:25 | password | test2.cpp:65:31:65:34 | cpy1 |
-| test2.cpp:72:17:72:24 | password | test2.cpp:73:30:73:32 | buf |
-| test2.cpp:72:17:72:24 | password | test2.cpp:76:30:76:32 | buf |
-| test2.cpp:98:45:98:52 | password | test2.cpp:99:27:99:32 | buffer |
-nodes
-| test2.cpp:43:36:43:43 | password | semmle.label | password |
-| test2.cpp:44:37:44:45 | thepasswd | semmle.label | thepasswd |
-| test2.cpp:50:41:50:53 | passwd_config | semmle.label | passwd_config |
-| test2.cpp:52:40:52:58 | * ... | semmle.label | * ... |
-| test2.cpp:52:44:52:57 | password_tries | semmle.label | password_tries |
-| test2.cpp:54:41:54:52 | widepassword | semmle.label | widepassword |
-| test2.cpp:55:40:55:51 | widepassword | semmle.label | widepassword |
-| test2.cpp:57:39:57:49 | call to getPassword | semmle.label | call to getPassword |
-| test2.cpp:62:18:62:25 | password | semmle.label | password |
-| test2.cpp:65:31:65:34 | cpy1 | semmle.label | cpy1 |
-| test2.cpp:72:17:72:24 | password | semmle.label | password |
-| test2.cpp:73:30:73:32 | buf | semmle.label | buf |
-| test2.cpp:76:30:76:32 | buf | semmle.label | buf |
-| test2.cpp:86:36:86:43 | password | semmle.label | password |
-| test2.cpp:91:50:91:63 | passwd_config2 | semmle.label | passwd_config2 |
-| test2.cpp:98:45:98:52 | password | semmle.label | password |
-| test2.cpp:99:27:99:32 | buffer | semmle.label | buffer |
-| test.cpp:45:9:45:19 | thePassword | semmle.label | thePassword |
-| test.cpp:70:38:70:48 | thePassword | semmle.label | thePassword |
-| test.cpp:73:43:73:53 | thePassword | semmle.label | thePassword |
-subpaths
-#select
-| test2.cpp:43:2:43:8 | call to fprintf | test2.cpp:43:36:43:43 | password | test2.cpp:43:36:43:43 | password | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:43:36:43:43 | password | this source. |
-| test2.cpp:44:2:44:8 | call to fprintf | test2.cpp:44:37:44:45 | thepasswd | test2.cpp:44:37:44:45 | thepasswd | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:44:37:44:45 | thepasswd | this source. |
-| test2.cpp:50:2:50:8 | call to fprintf | test2.cpp:50:41:50:53 | passwd_config | test2.cpp:50:41:50:53 | passwd_config | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:50:41:50:53 | passwd_config | this source. |
-| test2.cpp:54:2:54:8 | call to fprintf | test2.cpp:54:41:54:52 | widepassword | test2.cpp:54:41:54:52 | widepassword | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:54:41:54:52 | widepassword | this source. |
-| test2.cpp:55:2:55:8 | call to fprintf | test2.cpp:55:40:55:51 | widepassword | test2.cpp:55:40:55:51 | widepassword | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:55:40:55:51 | widepassword | this source. |
-| test2.cpp:57:2:57:8 | call to fprintf | test2.cpp:57:39:57:49 | call to getPassword | test2.cpp:57:39:57:49 | call to getPassword | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:57:39:57:49 | call to getPassword | this source. |
-| test2.cpp:65:3:65:9 | call to fprintf | test2.cpp:62:18:62:25 | password | test2.cpp:65:31:65:34 | cpy1 | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:62:18:62:25 | password | this source. |
-| test2.cpp:73:3:73:9 | call to fprintf | test2.cpp:72:17:72:24 | password | test2.cpp:73:30:73:32 | buf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:72:17:72:24 | password | this source. |
-| test2.cpp:76:3:76:9 | call to fprintf | test2.cpp:72:17:72:24 | password | test2.cpp:76:30:76:32 | buf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:72:17:72:24 | password | this source. |
-| test2.cpp:99:3:99:9 | call to fprintf | test2.cpp:98:45:98:52 | password | test2.cpp:99:27:99:32 | buffer | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:98:45:98:52 | password | this source. |
-| test.cpp:45:3:45:7 | call to fputs | test.cpp:45:9:45:19 | thePassword | test.cpp:45:9:45:19 | thePassword | This write into file 'file' may contain unencrypted data from $@ | test.cpp:45:9:45:19 | thePassword | this source. |
-| test.cpp:70:35:70:35 | call to operator<< | test.cpp:70:38:70:48 | thePassword | test.cpp:70:38:70:48 | thePassword | This write into file 'mystream' may contain unencrypted data from $@ | test.cpp:70:38:70:48 | thePassword | this source. |
-| test.cpp:73:37:73:41 | call to write | test.cpp:73:43:73:53 | thePassword | test.cpp:73:43:73:53 | thePassword | This write into file 'mystream' may contain unencrypted data from $@ | test.cpp:73:43:73:53 | thePassword | this source. |
+| test2.cpp:43:2:43:8 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:43:36:43:43 | password | this source. |
+| test2.cpp:44:2:44:8 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:44:37:44:45 | thepasswd | this source. |
+| test2.cpp:50:2:50:8 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:50:41:50:53 | passwd_config | this source. |
+| test2.cpp:54:2:54:8 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:54:41:54:52 | widepassword | this source. |
+| test2.cpp:55:2:55:8 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:55:40:55:51 | widepassword | this source. |
+| test2.cpp:57:2:57:8 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:57:39:57:49 | call to getPassword | this source. |
+| test2.cpp:65:3:65:9 | call to fprintf | This write into file 'log' may contain unencrypted data from $@ | test2.cpp:62:18:62:25 | password | this source. |
+| test.cpp:45:3:45:7 | call to fputs | This write into file 'file' may contain unencrypted data from $@ | test.cpp:45:9:45:19 | thePassword | this source. |
+| test.cpp:70:35:70:35 | call to operator<< | This write into file 'mystream' may contain unencrypted data from $@ | test.cpp:70:38:70:48 | thePassword | this source. |
+| test.cpp:73:37:73:41 | call to write | This write into file 'mystream' may contain unencrypted data from $@ | test.cpp:73:43:73:53 | thePassword | this source. |

cpp/ql/test/query-tests/Security/CWE/CWE-311/semmle/tests/CleartextTransmission.expected

@@ -1,5 +1,4 @@
 edges
-| test2.cpp:63:24:63:31 | password | test2.cpp:63:16:63:20 | call to crypt |
 | test3.cpp:17:28:17:36 | password1 | test3.cpp:22:15:22:23 | password1 |
 | test3.cpp:17:51:17:59 | password2 | test3.cpp:26:15:26:23 | password2 |
 | test3.cpp:45:8:45:15 | password | test3.cpp:47:15:47:22 | password |
@@ -38,8 +37,10 @@ edges
 | test3.cpp:214:8:214:15 | password | test3.cpp:217:30:217:37 | password |
 | test3.cpp:214:8:214:15 | password | test3.cpp:219:15:219:26 | password_ptr |
 | test3.cpp:217:18:217:28 | call to rtn_encrypt | test3.cpp:219:15:219:26 | password_ptr |
+| test3.cpp:225:34:225:41 | password | test3.cpp:227:22:227:29 | password |
 | test3.cpp:225:34:225:41 | password | test3.cpp:228:26:228:33 | password |
 | test3.cpp:239:7:239:14 | password | test3.cpp:241:8:241:15 | password |
+| test3.cpp:239:7:239:14 | password | test3.cpp:242:8:242:15 | password |
 | test3.cpp:252:8:252:16 | password1 | test3.cpp:254:15:254:23 | password1 |
 | test3.cpp:252:8:252:16 | password1 | test3.cpp:256:3:256:19 | call to decrypt_to_buffer |
 | test3.cpp:252:8:252:16 | password1 | test3.cpp:256:21:256:29 | password1 |
@@ -83,22 +84,11 @@ edges
 | test3.cpp:350:9:350:16 | password | test3.cpp:352:16:352:23 | password |
 | test3.cpp:350:9:350:16 | password | test3.cpp:353:4:353:18 | call to decrypt_inplace |
 | test3.cpp:350:9:350:16 | password | test3.cpp:353:20:353:27 | password |
-| test3.cpp:366:8:366:15 | password | test3.cpp:368:15:368:22 | password |
-| test3.cpp:366:8:366:15 | password | test3.cpp:374:3:374:18 | call to SecureZeroBuffer |
-| test3.cpp:366:8:366:15 | password | test3.cpp:374:20:374:27 | password |
-| test3.cpp:386:8:386:15 | password | test3.cpp:388:15:388:22 | password |
-| test3.cpp:398:18:398:25 | password | test3.cpp:400:15:400:23 | & ... |
-| test3.cpp:398:18:398:25 | password | test3.cpp:400:16:400:23 | password |
-| test3.cpp:398:18:398:25 | password | test3.cpp:400:33:400:40 | password |
-| test3.cpp:421:21:421:28 | password | test3.cpp:421:3:421:17 | call to decrypt_inplace |
 | test.cpp:41:23:41:43 | cleartext password! | test.cpp:48:21:48:27 | call to encrypt |
 | test.cpp:41:23:41:43 | cleartext password! | test.cpp:48:29:48:39 | thePassword |
 | test.cpp:66:23:66:43 | cleartext password! | test.cpp:76:21:76:27 | call to encrypt |
 | test.cpp:66:23:66:43 | cleartext password! | test.cpp:76:29:76:39 | thePassword |
 nodes
-| test2.cpp:63:16:63:20 | call to crypt | semmle.label | call to crypt |
-| test2.cpp:63:24:63:31 | password | semmle.label | password |
-| test2.cpp:63:24:63:31 | password | semmle.label | password |
 | test3.cpp:17:28:17:36 | password1 | semmle.label | password1 |
 | test3.cpp:17:51:17:59 | password2 | semmle.label | password2 |
 | test3.cpp:22:15:22:23 | password1 | semmle.label | password1 |
@@ -154,9 +144,11 @@ nodes
 | test3.cpp:217:30:217:37 | password | semmle.label | password |
 | test3.cpp:219:15:219:26 | password_ptr | semmle.label | password_ptr |
 | test3.cpp:225:34:225:41 | password | semmle.label | password |
+| test3.cpp:227:22:227:29 | password | semmle.label | password |
 | test3.cpp:228:26:228:33 | password | semmle.label | password |
 | test3.cpp:239:7:239:14 | password | semmle.label | password |
 | test3.cpp:241:8:241:15 | password | semmle.label | password |
+| test3.cpp:242:8:242:15 | password | semmle.label | password |
 | test3.cpp:252:8:252:16 | password1 | semmle.label | password1 |
 | test3.cpp:252:24:252:32 | password2 | semmle.label | password2 |
 | test3.cpp:254:15:254:23 | password1 | semmle.label | password1 |
@@ -203,21 +195,6 @@ nodes
 | test3.cpp:352:16:352:23 | password | semmle.label | password |
 | test3.cpp:353:4:353:18 | call to decrypt_inplace | semmle.label | call to decrypt_inplace |
 | test3.cpp:353:20:353:27 | password | semmle.label | password |
-| test3.cpp:366:8:366:15 | password | semmle.label | password |
-| test3.cpp:368:15:368:22 | password | semmle.label | password |
-| test3.cpp:374:3:374:18 | call to SecureZeroBuffer | semmle.label | call to SecureZeroBuffer |
-| test3.cpp:374:20:374:27 | password | semmle.label | password |
-| test3.cpp:386:8:386:15 | password | semmle.label | password |
-| test3.cpp:388:15:388:22 | password | semmle.label | password |
-| test3.cpp:398:18:398:25 | password | semmle.label | password |
-| test3.cpp:400:15:400:23 | & ... | semmle.label | & ... |
-| test3.cpp:400:16:400:23 | password | semmle.label | password |
-| test3.cpp:400:33:400:40 | password | semmle.label | password |
-| test3.cpp:414:17:414:24 | password | semmle.label | password |
-| test3.cpp:420:17:420:24 | password | semmle.label | password |
-| test3.cpp:421:3:421:17 | call to decrypt_inplace | semmle.label | call to decrypt_inplace |
-| test3.cpp:421:21:421:28 | password | semmle.label | password |
-| test3.cpp:421:21:421:28 | password | semmle.label | password |
 | test.cpp:41:23:41:43 | cleartext password! | semmle.label | cleartext password! |
 | test.cpp:48:21:48:27 | call to encrypt | semmle.label | call to encrypt |
 | test.cpp:48:29:48:39 | thePassword | semmle.label | thePassword |
@@ -241,12 +218,11 @@ subpaths
 | test3.cpp:140:3:140:6 | call to send | test3.cpp:129:39:129:47 | password1 | test3.cpp:140:15:140:17 | ptr | This operation transmits 'ptr', which may contain unencrypted sensitive data from $@ | test3.cpp:129:39:129:47 | password1 | password1 |
 | test3.cpp:146:3:146:6 | call to send | test3.cpp:126:9:126:23 | global_password | test3.cpp:146:15:146:18 | data | This operation transmits 'data', which may contain unencrypted sensitive data from $@ | test3.cpp:126:9:126:23 | global_password | global_password |
 | test3.cpp:159:3:159:6 | call to send | test3.cpp:152:29:152:36 | password | test3.cpp:159:15:159:20 | buffer | This operation transmits 'buffer', which may contain unencrypted sensitive data from $@ | test3.cpp:152:29:152:36 | password | password |
+| test3.cpp:227:2:227:5 | call to send | test3.cpp:225:34:225:41 | password | test3.cpp:227:22:227:29 | password | This operation transmits 'password', which may contain unencrypted sensitive data from $@ | test3.cpp:225:34:225:41 | password | password |
 | test3.cpp:228:2:228:5 | call to send | test3.cpp:225:34:225:41 | password | test3.cpp:228:26:228:33 | password | This operation transmits 'password', which may contain unencrypted sensitive data from $@ | test3.cpp:225:34:225:41 | password | password |
 | test3.cpp:241:2:241:6 | call to fgets | test3.cpp:239:7:239:14 | password | test3.cpp:241:8:241:15 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:239:7:239:14 | password | password |
+| test3.cpp:242:2:242:6 | call to fgets | test3.cpp:239:7:239:14 | password | test3.cpp:242:8:242:15 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:239:7:239:14 | password | password |
 | test3.cpp:272:3:272:6 | call to send | test3.cpp:268:19:268:26 | password | test3.cpp:272:15:272:18 | data | This operation transmits 'data', which may contain unencrypted sensitive data from $@ | test3.cpp:268:19:268:26 | password | password |
 | test3.cpp:295:2:295:5 | call to send | test3.cpp:308:58:308:66 | password2 | test3.cpp:295:14:295:17 | data | This operation transmits 'data', which may contain unencrypted sensitive data from $@ | test3.cpp:308:58:308:66 | password2 | password2 |
 | test3.cpp:300:2:300:5 | call to send | test3.cpp:308:58:308:66 | password2 | test3.cpp:300:14:300:17 | data | This operation transmits 'data', which may contain unencrypted sensitive data from $@ | test3.cpp:308:58:308:66 | password2 | password2 |
 | test3.cpp:341:4:341:7 | call to recv | test3.cpp:339:9:339:16 | password | test3.cpp:341:16:341:23 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:339:9:339:16 | password | password |
-| test3.cpp:388:3:388:6 | call to recv | test3.cpp:386:8:386:15 | password | test3.cpp:388:15:388:22 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:386:8:386:15 | password | password |
-| test3.cpp:414:3:414:6 | call to recv | test3.cpp:414:17:414:24 | password | test3.cpp:414:17:414:24 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:414:17:414:24 | password | password |
-| test3.cpp:420:3:420:6 | call to recv | test3.cpp:420:17:420:24 | password | test3.cpp:420:17:420:24 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:420:17:420:24 | password | password |

cpp/ql/test/query-tests/Security/CWE/CWE-311/semmle/tests/test2.cpp

@@ -70,15 +70,8 @@ void tests(FILE *log, myStruct &s)
 		char buf[1024];
 
 		strcpy(buf, s.password);
-		fprintf(log, "buf = %s\n", buf); // BAD
+		fprintf(log, "buf = %s\n", buf); // BAD [NOT DETECTED]
 		
-		strcpy(buf, s.password_hash);
-		fprintf(log, "buf = %s\n", buf); // GOOD [FALSE POSITIVE]
-	}
-
-	{
-		char buf[1024];
-
 		strcpy(buf, s.password_hash);
 		fprintf(log, "buf = %s\n", buf); // GOOD
 	}
@@ -96,17 +89,6 @@ void tests(FILE *log, myStruct &s)
 		char buffer[1024];
 
 		snprintf(buffer, 1024, "password = %s", s.password);
-		fprintf(log, "log: %s", buffer); // BAD
+		fprintf(log, "log: %s", buffer); // BAD [NOT DETECTED]
 	}
 }
-
-char *gets(char *s);
-
-void test_gets()
-{
-	{
-		char password[1024];
-
-		gets(password); // BAD
-	}
-}

cpp/ql/test/query-tests/Security/CWE/CWE-311/semmle/tests/test3.cpp

@@ -224,7 +224,7 @@ int get_socket(int from);
 
 void test_more_stdio(const char *password)
 {
-	send(get_socket(1), password, 128, val()); // GOOD: `getsocket(1)` is probably standard output
+	send(get_socket(1), password, 128, val()); // GOOD: `getsocket(1)` is probably standard output [FALSE POSITIVE]
 	send(get_socket(val()), password, 128, val()); // BAD
 }
 
@@ -239,7 +239,7 @@ void test_fgets(FILE *stream)
 	char password[128];
 
 	fgets(password, 128, stream); // BAD
-	fgets(password, 128, STDIN_STREAM); // GOOD: `STDIN_STREAM` is probably standard input
+	fgets(password, 128, STDIN_STREAM); // GOOD: `STDIN_STREAM` is probably standard input [FALSE POSITIVE]
 }
 
 void encrypt_to_buffer(const char *input, char* output);
@@ -356,68 +356,3 @@ void test_loops()
 		}
 	}
 }
-
-void DoDisguisedOperation(char *buffer, size_t size);
-void SecureZeroBuffer(char *buffer, size_t size);
-
-void test_securezero()
-{
-	{
-		char password[256];
-
-		recv(val(), password, 256, val()); // GOOD: password is (probably) encrypted
-
-		DoDisguisedOperation(password, 256); // decryption (disguised)
-
-		// ...
-
-		SecureZeroBuffer(password, 256); // evidence we may have been doing decryption
-	}
-}
-
-struct encrypted_data
-{
-	char data[256];
-};
-
-void test_more_clues()
-{
-	{
-		char password[256];
-
-		recv(val(), password, 256, val()); // BAD: not encrypted
-	}
-
-	{
-		char encrypted_password[256];
-
-		recv(val(), encrypted_password, 256, val()); // GOOD: password is (probably) encrypted
-	}
-
-	{
-		encrypted_data password;
-
-		recv(val(), &password, sizeof(password), val()); // GOOD: password is (probably) encrypted
-	}
-}
-
-struct packet
-{
-	char password[256];
-};
-
-void test_member_password()
-{
-	{
-		packet p;
-
-		recv(val(), p.password, 256, val()); // BAD: not encrypted
-	}
-
-	{
-		packet p;
-
-		recv(val(), p.password, 256, val()); // GOOD: password is encrypted [FALSE POSITIVE]
-		decrypt_inplace(p.password); // proof that `password` was in fact encrypted
-	}
-}

csharp/downgrades/58a680081d22ec56c376539b7cca9521dc38fdbb/upgrade.properties

@@ -1,2 +0,0 @@
-description: Remove unused legacy relations.
-compatibility: backwards

csharp/downgrades/ba2201248071b2bf0bb52909b35014091d2e18a6/upgrade.properties

@@ -1,2 +0,0 @@
-description: Support for compiler-generated event accessors.
-compatibility: backwards

csharp/extractor/Semmle.Extraction.CSharp/Entities/Accessor.cs

@@ -6,15 +6,11 @@ namespace Semmle.Extraction.CSharp.Entities
 {
     internal class Accessor : Method
     {
-        private readonly IPropertySymbol property;
-        protected Accessor(Context cx, IMethodSymbol init, IPropertySymbol property)
-            : base(cx, init)
-        {
-            this.property = property;
-        }
+        protected Accessor(Context cx, IMethodSymbol init)
+            : base(cx, init) { }
 
         /// <summary>
-        /// Gets the property symbol associated with accessor `symbol`, or `null`
+        /// Gets the property symbol associated accessor `symbol`, or `null`
         /// if there is no associated symbol.
         /// </summary>
         public static IPropertySymbol? GetPropertySymbol(IMethodSymbol symbol)
@@ -30,30 +26,42 @@ namespace Semmle.Extraction.CSharp.Entities
             return props.SingleOrDefault();
         }
 
+        /// <summary>
+        /// Gets the property symbol associated with this accessor.
+        /// </summary>
+        private IPropertySymbol? PropertySymbol => GetPropertySymbol(Symbol);
+
+        public new Accessor OriginalDefinition => Create(Context, Symbol.OriginalDefinition);
+
         public override void Populate(TextWriter trapFile)
         {
             PopulateMethod(trapFile);
             PopulateModifiers(trapFile);
             ContainingType!.PopulateGenerics();
 
-            var parent = Property.Create(Context, property);
+            var prop = PropertySymbol;
+            if (prop is null)
+            {
+                Context.ModelError(Symbol, "Unhandled accessor associated symbol");
+                return;
+            }
+
+            var parent = Property.Create(Context, prop);
             int kind;
             Accessor unboundAccessor;
-            if (SymbolEqualityComparer.Default.Equals(Symbol, property.GetMethod))
+            if (SymbolEqualityComparer.Default.Equals(Symbol, prop.GetMethod))
             {
                 kind = 1;
-                var orig = property.OriginalDefinition;
-                unboundAccessor = Create(Context, orig.GetMethod!, orig);
+                unboundAccessor = Create(Context, prop.OriginalDefinition.GetMethod!);
             }
-            else if (SymbolEqualityComparer.Default.Equals(Symbol, property.SetMethod))
+            else if (SymbolEqualityComparer.Default.Equals(Symbol, prop.SetMethod))
             {
                 kind = 2;
-                var orig = property.OriginalDefinition;
-                unboundAccessor = Create(Context, orig.SetMethod!, orig);
+                unboundAccessor = Create(Context, prop.OriginalDefinition.SetMethod!);
             }
             else
             {
-                Context.ModelError(Symbol, $"Unhandled accessor method {Symbol.ToDisplayString()}");
+                Context.ModelError(Symbol, "Unhandled accessor kind");
                 return;
             }
 
@@ -75,14 +83,14 @@ namespace Semmle.Extraction.CSharp.Entities
             }
         }
 
-        public static Accessor Create(Context cx, IMethodSymbol symbol, IPropertySymbol prop) =>
-            AccessorFactory.Instance.CreateEntity(cx, symbol, (symbol, prop));
+        public static new Accessor Create(Context cx, IMethodSymbol symbol) =>
+            AccessorFactory.Instance.CreateEntityFromSymbol(cx, symbol);
 
-        private class AccessorFactory : CachedEntityFactory<(IMethodSymbol, IPropertySymbol), Accessor>
+        private class AccessorFactory : CachedEntityFactory<IMethodSymbol, Accessor>
         {
             public static AccessorFactory Instance { get; } = new AccessorFactory();
 
-            public override Accessor Create(Context cx, (IMethodSymbol, IPropertySymbol) init) => new(cx, init.Item1, init.Item2);
+            public override Accessor Create(Context cx, IMethodSymbol init) => new Accessor(cx, init);
         }
     }
 }

csharp/extractor/Semmle.Extraction.CSharp/Entities/EventAccessor.cs

@@ -3,46 +3,44 @@ using System.IO;
 
 namespace Semmle.Extraction.CSharp.Entities
 {
-    internal class EventAccessor : Method
+    internal class EventAccessor : Accessor
     {
-        private readonly IEventSymbol @event;
-
-        private EventAccessor(Context cx, IMethodSymbol init, IEventSymbol @event)
-            : base(cx, init)
-        {
-            this.@event = @event;
-        }
+        private EventAccessor(Context cx, IMethodSymbol init)
+            : base(cx, init) { }
 
         /// <summary>
-        /// Gets the event symbol associated with accessor `symbol`, or `null`
-        /// if there is no associated symbol.
+        /// Gets the event symbol associated with this accessor.
         /// </summary>
-        public static IEventSymbol? GetEventSymbol(IMethodSymbol symbol) =>
-            symbol.AssociatedSymbol as IEventSymbol;
+        private IEventSymbol? EventSymbol => Symbol.AssociatedSymbol as IEventSymbol;
 
         public override void Populate(TextWriter trapFile)
         {
             PopulateMethod(trapFile);
             ContainingType!.PopulateGenerics();
 
+            var @event = EventSymbol;
+            if (@event is null)
+            {
+                Context.ModelError(Symbol, "Unhandled event accessor associated symbol");
+                return;
+            }
+
             var parent = Event.Create(Context, @event);
             int kind;
             EventAccessor unboundAccessor;
             if (SymbolEqualityComparer.Default.Equals(Symbol, @event.AddMethod))
             {
                 kind = 1;
-                var orig = @event.OriginalDefinition;
-                unboundAccessor = Create(Context, orig.AddMethod!, orig);
+                unboundAccessor = Create(Context, @event.OriginalDefinition.AddMethod!);
             }
             else if (SymbolEqualityComparer.Default.Equals(Symbol, @event.RemoveMethod))
             {
                 kind = 2;
-                var orig = @event.OriginalDefinition;
-                unboundAccessor = Create(Context, orig.RemoveMethod!, orig);
+                unboundAccessor = Create(Context, @event.OriginalDefinition.RemoveMethod!);
             }
             else
             {
-                Context.ModelError(Symbol, $"Undhandled event accessor kind {Symbol.ToDisplayString()}");
+                Context.ModelError(Symbol, "Undhandled event accessor kind");
                 return;
             }
 
@@ -52,21 +50,16 @@ namespace Semmle.Extraction.CSharp.Entities
                 trapFile.event_accessor_location(this, l);
 
             Overrides(trapFile);
-
-            if (Symbol.FromSource() && Block is null)
-            {
-                trapFile.compiler_generated(this);
-            }
         }
 
-        public static EventAccessor Create(Context cx, IMethodSymbol symbol, IEventSymbol @event) =>
-            EventAccessorFactory.Instance.CreateEntity(cx, symbol, (symbol, @event));
+        public static new EventAccessor Create(Context cx, IMethodSymbol symbol) =>
+            EventAccessorFactory.Instance.CreateEntityFromSymbol(cx, symbol);
 
-        private class EventAccessorFactory : CachedEntityFactory<(IMethodSymbol, IEventSymbol), EventAccessor>
+        private class EventAccessorFactory : CachedEntityFactory<IMethodSymbol, EventAccessor>
         {
             public static EventAccessorFactory Instance { get; } = new EventAccessorFactory();
 
-            public override EventAccessor Create(Context cx, (IMethodSymbol, IEventSymbol) init) => new EventAccessor(cx, init.Item1, init.Item2);
+            public override EventAccessor Create(Context cx, IMethodSymbol init) => new EventAccessor(cx, init);
         }
     }
 }

csharp/extractor/Semmle.Extraction.CSharp/Entities/Expressions/Lambda.cs

@@ -45,7 +45,7 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
                 else if (body is BlockSyntax blockBody)
                     Statements.Block.Create(Context, blockBody, this, 0);
                 else
-                    Context.ModelError(body, $"Unhandled lambda body of type {body.GetType()}");
+                    Context.ModelError(body, "Unhandled lambda body");
             });
         }
 

csharp/extractor/Semmle.Extraction.CSharp/Entities/Expressions/MemberAccess.cs

@@ -96,7 +96,7 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
                     kind = ExprKind.NAMESPACE_ACCESS;
                     break;
                 default:
-                    info.Context.ModelError(info.Node, $"Unhandled symbol for member access of kind {symbol.Kind}");
+                    info.Context.ModelError(info.Node, "Unhandled symbol for member access");
                     kind = ExprKind.UNKNOWN;
                     break;
             }

csharp/extractor/Semmle.Extraction.CSharp/Entities/Expressions/ObjectCreation/BaseObjectCreation.cs

@@ -43,8 +43,7 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
 
             if (Syntax.Initializer is not null)
             {
-                var kind = Syntax.Initializer.Kind();
-                switch (kind)
+                switch (Syntax.Initializer.Kind())
                 {
                     case SyntaxKind.CollectionInitializerExpression:
                         CollectionInitializer.Create(new ExpressionNodeInfo(Context, Syntax.Initializer, this, -1).SetType(Type));
@@ -53,7 +52,7 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
                         ObjectInitializer.Create(new ExpressionNodeInfo(Context, Syntax.Initializer, this, -1).SetType(Type));
                         break;
                     default:
-                        Context.ModelError(Syntax.Initializer, $"Unhandled initializer in object creation of kind {kind}");
+                        Context.ModelError(Syntax.Initializer, "Unhandled initializer in object creation");
                         break;
                 }
             }

csharp/extractor/Semmle.Extraction.CSharp/Entities/Expressions/Patterns/Pattern.cs

@@ -68,7 +68,7 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
                         case DiscardDesignationSyntax discard:
                             return new Expressions.Discard(cx, discard, parent, child);
                         default:
-                            throw new InternalError($"var pattern designation of type {varPattern.Designation.GetType()} is unhandled");
+                            throw new InternalError("var pattern designation is unhandled");
                     }
 
                 case DiscardPatternSyntax dp: