make boosted version of js/code-injection

Changes generated with:

```
tb boost src/Security/CWE-094/CodeInjection.ql CodeInjectionSink
```

.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",

.gitattributes

@@ -50,9 +50,4 @@
 *.pdb -text
 
 java/ql/test/stubs/**/*.java linguist-generated=true
-java/ql/test/experimental/stubs/**/*.java linguist-generated=true
-
-# Generated test files - these are synced from the standard JavaScript libraries using
-# `javascript/ql/experimental/adaptivethreatmodeling/test/update_endpoint_test_files.py`.
-javascript/ql/experimental/adaptivethreatmodeling/test/endpoint_large_scale/autogenerated/**/*.js linguist-generated=true -merge
-javascript/ql/experimental/adaptivethreatmodeling/test/endpoint_large_scale/autogenerated/**/*.ts linguist-generated=true -merge
+java/ql/test/experimental/stubs/**/*.java linguist-generated=true

.github/workflows/codeql-analysis.yml

@@ -27,11 +27,6 @@ jobs:
       pull-requests: read
 
     steps:
-    - name: Setup dotnet
-      uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: 6.0.101
-
     - name: Checkout repository
       uses: actions/checkout@v2
 
@@ -56,7 +51,7 @@ jobs:
     #    uses a compiled language
 
     - run: |
-       dotnet build csharp /p:UseSharedCompilation=false
+       dotnet build csharp
 
     - name: Perform CodeQL Analysis
       uses: github/codeql-action/analyze@main

.github/workflows/js-ml-tests.yml

@@ -1,67 +0,0 @@
-name: JS ML-powered queries tests
-
-on:
-  push:
-    paths:
-      - "javascript/ql/experimental/adaptivethreatmodeling/**"
-      - .github/workflows/js-ml-tests.yml
-    branches:
-      - main
-      - "rc/*"
-  pull_request:
-    paths:
-      - "javascript/ql/experimental/adaptivethreatmodeling/**"
-      - .github/workflows/js-ml-tests.yml
-
-defaults:
-  run:
-    working-directory: javascript/ql/experimental/adaptivethreatmodeling
-
-jobs:
-  qlformat:
-    name: Check QL formatting
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: ./.github/actions/fetch-codeql
-
-      - name: Check QL formatting
-        run: |
-          find . "(" -name "*.ql" -or -name "*.qll" ")" -print0 | \
-            xargs -0 codeql query format --check-only
-
-  qlcompile:
-    name: Check QL compilation
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: ./.github/actions/fetch-codeql
-
-      - name: Check QL compilation
-        run: |
-          codeql query compile \
-            --check-only \
-            --ram 5120 \
-            --additional-packs "${{ github.workspace }}" \
-            --threads=0 \
-            -- \
-            lib modelbuilding src
-
-  qltest:
-    name: Run QL tests
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: ./.github/actions/fetch-codeql
-
-      - name: Run QL tests
-        run: |
-          codeql test run \
-            --threads=0 \
-            --ram 5120 \
-            --additional-packs "${{ github.workspace }}" \
-            -- \
-            test

.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/mad_regenerate-models.yml

@@ -1,62 +0,0 @@
-name: Regenerate framework models
-
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: "30 2 * * *"
-  pull_request:
-    branches:
-      - main
-    paths:
-      - ".github/workflows/mad_regenerate-models.yml"
-
-jobs:
-  regenerate-models:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        # placeholder required for each axis, excluded below, replaced by the actual combinations (see include)
-        slug: ["placeholder"]
-        ref: ["placeholder"]
-        include:
-          - slug: "apache/commons-io"
-            ref: "8985de8fe74f6622a419b37a6eed0dbc484dc128"
-        exclude:
-          - slug: "placeholder"
-            ref: "placeholder"
-    steps:
-      - name: Clone self (github/codeql)
-        uses: actions/checkout@v2
-      - name: Setup CodeQL binaries
-        uses: ./.github/actions/fetch-codeql
-      - name: Clone repositories
-        uses: actions/checkout@v2
-        with:
-          path: repos/${{ matrix.ref }}
-          ref: ${{ matrix.ref }}
-          repository: ${{ matrix.slug }}
-      - name: Build database
-        env:
-          SLUG: ${{ matrix.slug }}
-          REF: ${{ matrix.ref }}
-        run: |
-          mkdir dbs
-          cd repos/${REF}
-          SHORTNAME=${SLUG//[^a-zA-Z0-9_]/}
-          codeql database create --language=java ../../dbs/${SHORTNAME}
-      - name: Regenerate models in-place
-        env:
-          SLUG: ${{ matrix.slug }}
-        run: |
-          SHORTNAME=${SLUG//[^a-zA-Z0-9_]/}
-          java/ql/src/utils/model-generator/RegenerateModels.py "${SLUG}" dbs/${SHORTNAME}
-      - name: Stage changes
-        run: |
-          find java -name "*.qll" -print0 | xargs -0 git add
-          git status
-          git diff --cached > models.patch
-      - uses: actions/upload-artifact@v2
-        with:
-          name: patch
-          path: models.patch
-          retention-days: 7

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

@@ -189,11 +189,4 @@ jobs:
         uses: github/codeql-action/analyze@erik-krogh/ql
         with: 
           category: "ql-for-ql-${{ matrix.folder }}"
-      - name: Copy sarif file to CWD
-        run: cp ../results/ql.sarif ./${{ matrix.folder }}.sarif
-      - name: Sarif as artifact
-        uses: actions/upload-artifact@v2
-        with:
-          name: ${{ matrix.folder }}.sarif
-          path: ${{ matrix.folder }}.sarif
 

.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/rust-toolchain.toml', '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

benjamin-button.md

@@ -1,51 +0,0 @@
-# benjamin-buttons.md
-
-This file describes the changes that have been applied to
-the library to make it behave as if it was younger.
-
-## TaintedPath.ql
-
-Sinks added between 2020-01-01 and 2020-10-06 have been removed. Found by looking at:
-
-- the commit titles of https://github.com/github/codeql/commits/main/javascript/ql/test/query-tests/Security/CWE-022/TaintedPath/TaintedPath.expected
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+sink
-
-Sinks added between 2018-08-02 and 2020-01-01 have been removed. Found by looking at:
-
-- the commit titles of https://github.com/github/codeql/commits/main/javascript/ql/test/query-tests/Security/CWE-022/TaintedPath/TaintedPath.expected
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+sink
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+pathinjection
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+tainted-path
-
-Sinks from the "graceful-fs" and "fs-extra" (added before the open-sourcing squash).
-
-## Xss.ql
-
-Sinks added between 2020-01-01 and 2020-10-06 have been removed. Found by looking at:
-
-- the commit titles of https://github.com/github/codeql/commits/main/javascript/ql/test/query-tests/Security/CWE-079/Xss.expected
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+sink
-
-- recursive type tracking for `jQuery::dollar`, `DOM::domValueRef`.
-
-## SqlInjection.ql
-
-Sinks added between 2020-01-01 and 2020-10-06 have been removed. Found by looking at:
-
-- the commit titles of https://github.com/github/codeql/commits/main/javascript/ql/test/query-tests/Security/CWE-089
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+sink
-
-Sinks added between 2018-08-02 and 2020-01-01 have been removed. Found by looking at:
-
-- the commit titles of https://github.com/github/codeql/commits/main/javascript/ql/test/query-tests/Security/CWE-089
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+sink
-- the PR titles of https://github.com/github/codeql/pulls?page=2&q=is%3Apr+label%3AJS+is%3Aclosed+sql
-
-TypeTracking in SQL.qll (added before the open-sourcing squash)
-
-The model of `mssql` and `sequelize` (added before the open-sourcing squash)
-
-## PseudoProperties
-
-Pseudo-properties (`$name$`) used in type-tracking and global dataflow configurations have been disabled.
-Found by searching for `"\$.*\$"`.

cpp/autobuilder/Semmle.Autobuild.Cpp.Tests/Semmle.Autobuild.Cpp.Tests.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
     <Nullable>enable</Nullable>

cpp/autobuilder/Semmle.Autobuild.Cpp/Semmle.Autobuild.Cpp.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Semmle.Autobuild.Cpp</AssemblyName>
     <RootNamespace>Semmle.Autobuild.Cpp</RootNamespace>
     <ApplicationIcon />

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/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/DataFlowUtil.qll

@@ -592,14 +592,12 @@ predicate simpleLocalFlowStep(Node nodeFrom, Node nodeTo) {
  * Holds if data flows from `source` to `sink` in zero or more local
  * (intra-procedural) steps.
  */
-pragma[inline]
 predicate localFlow(Node source, Node sink) { localFlowStep*(source, sink) }
 
 /**
  * Holds if data can flow from `e1` to `e2` in zero or more
  * local (intra-procedural) steps.
  */
-pragma[inline]
 predicate localExprFlow(Expr e1, Expr e2) { localFlow(exprNode(e1), exprNode(e2)) }
 
 /**

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

@@ -124,14 +124,12 @@ predicate localAdditionalTaintStep(DataFlow::Node nodeFrom, DataFlow::Node nodeT
  * Holds if taint may propagate from `source` to `sink` in zero or more local
  * (intra-procedural) steps.
  */
-pragma[inline]
 predicate localTaint(DataFlow::Node source, DataFlow::Node sink) { localTaintStep*(source, sink) }
 
 /**
  * Holds if taint can flow from `e1` to `e2` in zero or more
  * local (intra-procedural) steps.
  */
-pragma[inline]
 predicate localExprTaint(Expr e1, Expr e2) {
   localTaint(DataFlow::exprNode(e1), DataFlow::exprNode(e2))
 }

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/dataflow/internal/DataFlowUtil.qll

@@ -1032,14 +1032,12 @@ SideEffectInstruction getSideEffectFor(CallInstruction call, int argument) {
  * Holds if data flows from `source` to `sink` in zero or more local
  * (intra-procedural) steps.
  */
-pragma[inline]
 predicate localFlow(Node source, Node sink) { localFlowStep*(source, sink) }
 
 /**
  * Holds if data can flow from `i1` to `i2` in zero or more
  * local (intra-procedural) steps.
  */
-pragma[inline]
 predicate localInstructionFlow(Instruction e1, Instruction e2) {
   localFlow(instructionNode(e1), instructionNode(e2))
 }
@@ -1048,7 +1046,6 @@ predicate localInstructionFlow(Instruction e1, Instruction e2) {
  * Holds if data can flow from `e1` to `e2` in zero or more
  * local (intra-procedural) steps.
  */
-pragma[inline]
 predicate localExprFlow(Expr e1, Expr e2) { localFlow(exprNode(e1), exprNode(e2)) }
 
 private newtype TContent =

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

@@ -121,14 +121,12 @@ private predicate operandToInstructionTaintStep(Operand opFrom, Instruction inst
  * Holds if taint may propagate from `source` to `sink` in zero or more local
  * (intra-procedural) steps.
  */
-pragma[inline]
 predicate localTaint(DataFlow::Node source, DataFlow::Node sink) { localTaintStep*(source, sink) }
 
 /**
  * Holds if taint can flow from `i1` to `i2` in zero or more
  * local (intra-procedural) steps.
  */
-pragma[inline]
 predicate localInstructionTaint(Instruction i1, Instruction i2) {
   localTaint(DataFlow::instructionNode(i1), DataFlow::instructionNode(i2))
 }
@@ -137,7 +135,6 @@ predicate localInstructionTaint(Instruction i1, Instruction i2) {
  * Holds if taint can flow from `e1` to `e2` in zero or more
  * local (intra-procedural) steps.
  */
-pragma[inline]
 predicate localExprTaint(Expr e1, Expr e2) {
   localTaint(DataFlow::exprNode(e1), DataFlow::exprNode(e2))
 }

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.
@@ -567,13 +553,6 @@ newtype TTranslatedElement =
   } or
   // The initialization of a base class from within a constructor.
   TTranslatedConstructorBaseInit(ConstructorBaseInit init) { not ignoreExpr(init) } or
-  // Workaround for a case where no base constructor is generated but a targetless base
-  // constructor call is present.
-  TTranslatedConstructorBareInit(ConstructorInit init) {
-    not ignoreExpr(init) and
-    not init instanceof ConstructorBaseInit and
-    not init instanceof ConstructorFieldInit
-  } or
   // The destruction of a base class from within a destructor.
   TTranslatedDestructorBaseDestruction(DestructorBaseDestruction destruction) {
     not ignoreExpr(destruction)
@@ -642,34 +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/ir/implementation/raw/internal/TranslatedFunction.qll

@@ -573,11 +573,6 @@ class TranslatedConstructorInitList extends TranslatedElement, InitializationCon
       baseInit = func.(Constructor).getInitializer(id) and
       result = getTranslatedConstructorBaseInit(baseInit)
     )
-    or
-    exists(ConstructorInit bareInit |
-      bareInit = func.(Constructor).getInitializer(id) and
-      result = getTranslatedConstructorBareInit(bareInit)
-    )
   }
 
   override Instruction getFirstInstruction() {

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

@@ -917,36 +917,3 @@ class TranslatedDestructorBaseDestruction extends TranslatedBaseStructorCall,
 
   final override string toString() { result = "destroy base: " + call.toString() }
 }
-
-/**
- * A constructor base init call where no base constructor has been generated.
- *
- * Workaround for an extractor issue.
- */
-class TranslatedConstructorBareInit extends TranslatedElement, TTranslatedConstructorBareInit {
-  ConstructorInit init;
-
-  TranslatedConstructorBareInit() { this = TTranslatedConstructorBareInit(init) }
-
-  override Locatable getAST() { result = init }
-
-  final override string toString() { result = "construct base (no constructor)" }
-
-  override Instruction getFirstInstruction() { result = getParent().getChildSuccessor(this) }
-
-  override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType resultType) {
-    none()
-  }
-
-  override TranslatedElement getChild(int id) { none() }
-
-  override Function getFunction() { result = getParent().getFunction() }
-
-  override Instruction getInstructionSuccessor(InstructionTag tag, EdgeKind kind) { none() }
-
-  override Instruction getChildSuccessor(TranslatedElement child) { none() }
-}
-
-TranslatedConstructorBareInit getTranslatedConstructorBareInit(ConstructorInit init) {
-  result.getAST() = init
-}

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 +51,20 @@ 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 hasArrayWithUnknownSize(int bufParam) {
+    this.hasName("gets") and
+    bufParam = 0
+  }
+
   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 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 }
+  override predicate hasSocketInput(FunctionInput input) { input.isParameter(2) }
 }

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/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/Likely Bugs/Memory Management/ReturnStackAllocatedMemory.ql

@@ -14,9 +14,6 @@
  */
 
 import cpp
-// We don't actually use the global value numbering library in this query, but without it we end up
-// recomputing the IR.
-private import semmle.code.cpp.valuenumbering.GlobalValueNumbering
 import semmle.code.cpp.ir.IR
 import semmle.code.cpp.ir.dataflow.DataFlow::DataFlow
 

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

@@ -65,7 +65,6 @@ where
   midNode.getNode().asExpr() = 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,

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

@@ -5,7 +5,7 @@
  * @kind path-problem
  * @problem.severity warning
  * @security-severity 7.5
- * @precision high
+ * @precision medium
  * @id cpp/cleartext-transmission
  * @tags security
  *       external/cwe/cwe-319
@@ -14,8 +14,8 @@
 import cpp
 import semmle.code.cpp.security.SensitiveExprs
 import semmle.code.cpp.dataflow.TaintTracking
+import semmle.code.cpp.valuenumbering.GlobalValueNumbering
 import semmle.code.cpp.models.interfaces.FlowSource
-import semmle.code.cpp.commons.File
 import DataFlow::PathGraph
 
 /**
@@ -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)
     )
   }
@@ -121,32 +114,24 @@ abstract class NetworkSendRecv extends FunctionCall {
   NetworkSendRecv() {
     this.getTarget() = target and
     // exclude calls based on the socket...
-    not exists(DataFlow::Node src, DataFlow::Node dest |
-      DataFlow::localFlow(src, dest) and
-      dest.asExpr() = target.getSocketExpr(this) and
+    not exists(GVN g |
+      g = globalValueNumber(target.getSocketExpr(this)) and
       (
         // literal constant
-        src.asExpr() instanceof Literal
+        globalValueNumber(any(Literal l)) = g
         or
         // variable (such as a global) initialized to a literal constant
         exists(Variable v |
           v.getInitializer().getExpr() instanceof Literal and
-          src.asExpr() = v.getAnAccess()
+          g = globalValueNumber(v.getAnAccess())
         )
         or
         // result of a function call with literal inputs (likely constant)
-        forex(Expr arg | arg = src.asExpr().(FunctionCall).getAnArgument() | arg instanceof Literal)
-        or
-        // variable called `stdin`, `stdout` or `stderr`
-        src.asExpr().(VariableAccess).getTarget().getName() = ["stdin", "stdout", "stderr"]
-        or
-        // open of `"/dev/tty"`
         exists(FunctionCall fc |
-          fopenCall(fc) and
-          fc.getAnArgument().getValue() = "/dev/tty" and
-          src.asExpr() = fc
+          forex(Expr arg | arg = fc.getAnArgument() | arg instanceof Literal) and
+          g = globalValueNumber(fc)
         )
-        // (this is not exhaustive)
+        // (this is far from exhaustive)
       )
     )
   }

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/2022-01-25-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/2022-02-22-cleartext-transmission.md

@@ -1,4 +0,0 @@
----
-category: minorAnalysis
----
-* The "Cleartext transmission of sensitive information" (`cpp/cleartext-transmission`) query has been further improved to reduce false positive results, and upgraded from `medium` to `high` precision.

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/qlpack.yml

@@ -1,8 +1,6 @@
 name: codeql/cpp-queries
 version: 0.0.8-dev
-groups: 
-  - cpp
-  - queries
+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.
@@ -123,15 +123,6 @@ abstract class InlineExpectationsTest extends string {
    */
   abstract predicate hasActualResult(Location location, string element, string tag, string value);
 
-  /**
-   * Like `hasActualResult`, but returns results that do not require a matching annotation.
-   * A failure will still arise if there is an annotation that does not match any results, but not vice versa.
-   * Override this predicate to specify optional results.
-   */
-  predicate hasOptionalResult(Location location, string element, string tag, string value) {
-    none()
-  }
-
   final predicate hasFailureMessage(FailureLocatable element, string message) {
     exists(ActualResult actualResult |
       actualResult.getTest() = this and
@@ -143,8 +134,7 @@ abstract class InlineExpectationsTest extends string {
         )
         or
         not exists(ValidExpectation expectation | expectation.matchesActualResult(actualResult)) and
-        message = "Unexpected result: " + actualResult.getExpectationText() and
-        not actualResult.isOptional()
+        message = "Unexpected result: " + actualResult.getExpectationText()
       )
     )
     or
@@ -253,13 +243,9 @@ private string expectationPattern() {
 
 private newtype TFailureLocatable =
   TActualResult(
-    InlineExpectationsTest test, Location location, string element, string tag, string value,
-    boolean optional
+    InlineExpectationsTest test, Location location, string element, string tag, string value
   ) {
-    test.hasActualResult(location, element, tag, value) and
-    optional = false
-    or
-    test.hasOptionalResult(location, element, tag, value) and optional = true
+    test.hasActualResult(location, element, tag, value)
   } or
   TValidExpectation(ExpectationComment comment, string tag, string value, string knownFailure) {
     exists(TColumn column, string tags |
@@ -291,9 +277,8 @@ class ActualResult extends FailureLocatable, TActualResult {
   string element;
   string tag;
   string value;
-  boolean optional;
 
-  ActualResult() { this = TActualResult(test, location, element, tag, value, optional) }
+  ActualResult() { this = TActualResult(test, location, element, tag, value) }
 
   override string toString() { result = element }
 
@@ -304,8 +289,6 @@ class ActualResult extends FailureLocatable, TActualResult {
   override string getTag() { result = tag }
 
   override string getValue() { result = value }
-
-  predicate isOptional() { optional = true }
 }
 
 abstract private class Expectation extends FailureLocatable {

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

@@ -11332,64 +11332,6 @@ ir.cpp:
 # 1447|                         Type = [Struct] POD_Derived
 # 1447|                         ValueCategory = prvalue
 # 1448|     getStmt(4): [ReturnStmt] return ...
-# 1450| [CopyAssignmentOperator] Inheritance_Test_B& Inheritance_Test_B::operator=(Inheritance_Test_B const&)
-# 1450|   <params>: 
-#-----|     getParameter(0): [Parameter] (unnamed parameter 0)
-#-----|         Type = [LValueReferenceType] const Inheritance_Test_B &
-# 1450| [Constructor] void Inheritance_Test_B::Inheritance_Test_B()
-# 1450|   <params>: 
-# 1451| [Destructor] void Inheritance_Test_B::~Inheritance_Test_B()
-# 1451|   <params>: 
-# 1451|   getEntryPoint(): [BlockStmt] { ... }
-# 1451|     getStmt(0): [ReturnStmt] return ...
-# 1451|   <destructions>: 
-# 1454| [CopyAssignmentOperator] Inheritance_Test_A& Inheritance_Test_A::operator=(Inheritance_Test_A const&)
-# 1454|   <params>: 
-#-----|     getParameter(0): [Parameter] (unnamed parameter 0)
-#-----|         Type = [LValueReferenceType] const Inheritance_Test_A &
-# 1454| [MoveAssignmentOperator] Inheritance_Test_A& Inheritance_Test_A::operator=(Inheritance_Test_A&&)
-# 1454|   <params>: 
-#-----|     getParameter(0): [Parameter] (unnamed parameter 0)
-#-----|         Type = [RValueReferenceType] Inheritance_Test_A &&
-# 1454| [CopyConstructor] void Inheritance_Test_A::Inheritance_Test_A(Inheritance_Test_A const&)
-# 1454|   <params>: 
-#-----|     getParameter(0): [Parameter] (unnamed parameter 0)
-#-----|         Type = [LValueReferenceType] const Inheritance_Test_A &
-# 1454| [MoveConstructor] void Inheritance_Test_A::Inheritance_Test_A(Inheritance_Test_A&&)
-# 1454|   <params>: 
-#-----|     getParameter(0): [Parameter] (unnamed parameter 0)
-#-----|         Type = [RValueReferenceType] Inheritance_Test_A &&
-# 1454| [Destructor] void Inheritance_Test_A::~Inheritance_Test_A()
-# 1454|   <params>: 
-# 1457| [Constructor] void Inheritance_Test_A::Inheritance_Test_A()
-# 1457|   <params>: 
-# 1457|   <initializations>: 
-# 1457|     getInitializer(0): (no string representation)
-# 1457|         Type = [Struct] Inheritance_Test_B
-# 1457|         ValueCategory = prvalue
-# 1457|     getInitializer(1): [ConstructorFieldInit] constructor init of field x
-# 1457|         Type = [IntType] int
-# 1457|         ValueCategory = prvalue
-# 1457|       getExpr(): [Literal] 42
-# 1457|           Type = [IntType] int
-# 1457|           Value = [Literal] 42
-# 1457|           ValueCategory = prvalue
-# 1457|   getEntryPoint(): [BlockStmt] { ... }
-# 1458|     getStmt(0): [ExprStmt] ExprStmt
-# 1458|       getExpr(): [AssignExpr] ... = ...
-# 1458|           Type = [IntType] int
-# 1458|           ValueCategory = lvalue
-# 1458|         getLValue(): [PointerFieldAccess] y
-# 1458|             Type = [IntType] int
-# 1458|             ValueCategory = lvalue
-# 1458|           getQualifier(): [ThisExpr] this
-# 1458|               Type = [PointerType] Inheritance_Test_A *
-# 1458|               ValueCategory = prvalue(load)
-# 1458|         getRValue(): [Literal] 3
-# 1458|             Type = [IntType] int
-# 1458|             Value = [Literal] 3
-# 1458|             ValueCategory = prvalue
-# 1459|     getStmt(1): [ReturnStmt] return ...
 perf-regression.cpp:
 #    4| [CopyAssignmentOperator] Big& Big::operator=(Big const&)
 #    4|   <params>: 

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

@@ -1447,15 +1447,4 @@ void temporary_hierarchy() {
     float f = (returnValue<POD_Derived>()).f();
 }
 
-struct Inheritance_Test_B {
-  ~Inheritance_Test_B() {}
-};
-
-struct Inheritance_Test_A : public Inheritance_Test_B {
-  int x;
-  int y;
-  Inheritance_Test_A() : x(42) {
-    y = 3;
-  }
-};
 // semmle-extractor-options: -std=c++17 --clang

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 |
@@ -6626,36 +6626,6 @@
 | ir.cpp:1447:44:1447:44 | ChiTotal | total:m1447_5 |
 | ir.cpp:1447:44:1447:44 | SideEffect | ~m1447_5 |
 | ir.cpp:1447:44:1447:44 | StoreValue | r1447_8 |
-| ir.cpp:1451:3:1451:21 | Address | &:r1451_5 |
-| ir.cpp:1451:3:1451:21 | Address | &:r1451_5 |
-| ir.cpp:1451:3:1451:21 | Address | &:r1451_7 |
-| ir.cpp:1451:3:1451:21 | Address | &:r1451_7 |
-| ir.cpp:1451:3:1451:21 | ChiPartial | partial:m1451_3 |
-| ir.cpp:1451:3:1451:21 | ChiTotal | total:m1451_2 |
-| ir.cpp:1451:3:1451:21 | Load | m1451_6 |
-| ir.cpp:1451:3:1451:21 | SideEffect | m1451_3 |
-| ir.cpp:1451:3:1451:21 | SideEffect | m1451_8 |
-| ir.cpp:1457:3:1457:20 | Address | &:r1457_5 |
-| ir.cpp:1457:3:1457:20 | Address | &:r1457_5 |
-| ir.cpp:1457:3:1457:20 | Address | &:r1457_7 |
-| ir.cpp:1457:3:1457:20 | Address | &:r1457_7 |
-| ir.cpp:1457:3:1457:20 | ChiPartial | partial:m1457_3 |
-| ir.cpp:1457:3:1457:20 | ChiTotal | total:m1457_2 |
-| ir.cpp:1457:3:1457:20 | Load | m1457_6 |
-| ir.cpp:1457:3:1457:20 | SideEffect | m1457_3 |
-| ir.cpp:1457:3:1457:20 | SideEffect | m1458_6 |
-| ir.cpp:1457:3:1457:20 | Unary | m1457_6 |
-| ir.cpp:1457:26:1457:30 | Address | &:r1457_9 |
-| ir.cpp:1457:26:1457:30 | ChiPartial | partial:m1457_11 |
-| ir.cpp:1457:26:1457:30 | ChiTotal | total:m1457_8 |
-| ir.cpp:1457:26:1457:30 | StoreValue | r1457_10 |
-| ir.cpp:1458:5:1458:5 | Address | &:r1458_2 |
-| ir.cpp:1458:5:1458:5 | Address | &:r1458_4 |
-| ir.cpp:1458:5:1458:5 | Load | m1457_6 |
-| ir.cpp:1458:5:1458:5 | Unary | r1458_3 |
-| ir.cpp:1458:5:1458:9 | ChiPartial | partial:m1458_5 |
-| ir.cpp:1458:5:1458:9 | ChiTotal | total:m1457_12 |
-| ir.cpp:1458:9:1458:9 | StoreValue | r1458_1 |
 | perf-regression.cpp:6:3:6:5 | Address | &:r6_5 |
 | perf-regression.cpp:6:3:6:5 | Address | &:r6_5 |
 | perf-regression.cpp:6:3:6:5 | Address | &:r6_7 |
@@ -6771,7 +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 |
@@ -6796,7 +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 |
@@ -6821,7 +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 |
@@ -6846,7 +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 |
@@ -6871,7 +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 |
@@ -6893,7 +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?
@@ -7858,44 +7858,6 @@ ir.cpp:
 # 1443|     v1443_5(void)               = AliasedUse                                        : ~m?
 # 1443|     v1443_6(void)               = ExitFunction                                      : 
 
-# 1451| void Inheritance_Test_B::~Inheritance_Test_B()
-# 1451|   Block 0
-# 1451|     v1451_1(void)                       = EnterFunction                : 
-# 1451|     mu1451_2(unknown)                   = AliasedDefinition            : 
-# 1451|     mu1451_3(unknown)                   = InitializeNonLocal           : 
-# 1451|     r1451_4(glval<unknown>)             = VariableAddress[#this]       : 
-# 1451|     mu1451_5(glval<Inheritance_Test_B>) = InitializeParameter[#this]   : &:r1451_4
-# 1451|     r1451_6(glval<Inheritance_Test_B>)  = Load[#this]                  : &:r1451_4, ~m?
-# 1451|     mu1451_7(Inheritance_Test_B)        = InitializeIndirection[#this] : &:r1451_6
-# 1451|     v1451_8(void)                       = NoOp                         : 
-# 1451|     v1451_9(void)                       = ReturnIndirection[#this]     : &:r1451_6, ~m?
-# 1451|     v1451_10(void)                      = ReturnVoid                   : 
-# 1451|     v1451_11(void)                      = AliasedUse                   : ~m?
-# 1451|     v1451_12(void)                      = ExitFunction                 : 
-
-# 1457| void Inheritance_Test_A::Inheritance_Test_A()
-# 1457|   Block 0
-# 1457|     v1457_1(void)                       = EnterFunction                : 
-# 1457|     mu1457_2(unknown)                   = AliasedDefinition            : 
-# 1457|     mu1457_3(unknown)                   = InitializeNonLocal           : 
-# 1457|     r1457_4(glval<unknown>)             = VariableAddress[#this]       : 
-# 1457|     mu1457_5(glval<Inheritance_Test_A>) = InitializeParameter[#this]   : &:r1457_4
-# 1457|     r1457_6(glval<Inheritance_Test_A>)  = Load[#this]                  : &:r1457_4, ~m?
-# 1457|     mu1457_7(Inheritance_Test_A)        = InitializeIndirection[#this] : &:r1457_6
-# 1457|     r1457_8(glval<int>)                 = FieldAddress[x]              : mu1457_5
-# 1457|     r1457_9(int)                        = Constant[42]                 : 
-# 1457|     mu1457_10(int)                      = Store[?]                     : &:r1457_8, r1457_9
-# 1458|     r1458_1(int)                        = Constant[3]                  : 
-# 1458|     r1458_2(glval<unknown>)             = VariableAddress[#this]       : 
-# 1458|     r1458_3(Inheritance_Test_A *)       = Load[#this]                  : &:r1458_2, ~m?
-# 1458|     r1458_4(glval<int>)                 = FieldAddress[y]              : r1458_3
-# 1458|     mu1458_5(int)                       = Store[?]                     : &:r1458_4, r1458_1
-# 1459|     v1459_1(void)                       = NoOp                         : 
-# 1457|     v1457_11(void)                      = ReturnIndirection[#this]     : &:r1457_6, ~m?
-# 1457|     v1457_12(void)                      = ReturnVoid                   : 
-# 1457|     v1457_13(void)                      = AliasedUse                   : ~m?
-# 1457|     v1457_14(void)                      = ExitFunction                 : 
-
 perf-regression.cpp:
 #    6| void Big::Big()
 #    6|   Block 0
@@ -8005,8 +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?
@@ -8034,8 +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?
@@ -8051,8 +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?
@@ -8069,8 +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?
@@ -8087,8 +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?
@@ -8105,8 +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/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/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/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 |
@@ -90,16 +89,11 @@ edges
 | 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 |
-| test3.cpp:429:7:429:14 | password | test3.cpp:431:8:431:15 | password |
 | 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 |
@@ -214,13 +208,6 @@ nodes
 | 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 |
-| test3.cpp:429:7:429:14 | password | semmle.label | password |
-| test3.cpp:431:8:431:15 | 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 |
@@ -251,6 +238,3 @@ subpaths
 | 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 |
-| test3.cpp:431:2:431:6 | call to fgets | test3.cpp:429:7:429:14 | password | test3.cpp:431:8:431:15 | password | This operation receives into 'password', which may put unencrypted sensitive data into $@ | test3.cpp:429:7:429:14 | password | password |

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

@@ -99,14 +99,3 @@ void tests(FILE *log, myStruct &s)
 		fprintf(log, "log: %s", buffer); // BAD
 	}
 }
-
-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

@@ -411,66 +411,13 @@ void test_member_password()
 	{
 		packet p;
 
-		recv(val(), p.password, 256, val()); // BAD: not encrypted
+		recv(val(), p.password, 256, val()); // BAD: not encrypted [NOT DETECTED]
 	}
 
 	{
 		packet p;
 
-		recv(val(), p.password, 256, val()); // GOOD: password is encrypted [FALSE POSITIVE]
+		recv(val(), p.password, 256, val()); // GOOD: password is encrypted
 		decrypt_inplace(p.password); // proof that `password` was in fact encrypted
 	}
 }
-
-extern FILE *stdin;
-
-void test_stdin_param(FILE *stream)
-{
-	char password[128];
-
-	fgets(password, 128, stream); // GOOD: from standard input (see call below) [FALSE POSITIVE]
-}
-
-void test_stdin()
-{
-	char password[128];
-	FILE *f = stdin;
-
-	fgets(password, 128, stdin); // GOOD: from standard input
-	fgets(password, 128, f); // GOOD: from standard input
-	test_stdin_param(stdin);
-}
-
-int open(const char *filename, int b);
-
-void test_tty()
-{
-	{
-		char password[256];
-		int f;
-
-		f = open("/dev/tty", val());
-		recv(f, password, 256, val()); // GOOD: from terminal
-	}
-
-	{
-		char password[256];
-		int f;
-
-		f = STDIN_FILENO;
-		recv(f, password, 256, val()); // GOOD: from stdin
-	}
-
-	{
-		char password[256];
-		int f;
-
-		f = open("/dev/tty", val());
-		if (f == -1)
-		{
-			f = STDIN_FILENO;
-		}
-
-		recv(f, password, 256, val()); // GOOD: from terminal or stdin
-	}
-}

csharp/autobuilder/Semmle.Autobuild.CSharp.Tests/Semmle.Autobuild.CSharp.Tests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 		<RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
 		<Nullable>enable</Nullable>

csharp/autobuilder/Semmle.Autobuild.CSharp/Semmle.Autobuild.CSharp.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<AssemblyName>Semmle.Autobuild.CSharp</AssemblyName>
 		<RootNamespace>Semmle.Autobuild.CSharp</RootNamespace>
 		<ApplicationIcon/>

csharp/autobuilder/Semmle.Autobuild.Shared/Semmle.Autobuild.Shared.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<AssemblyName>Semmle.Autobuild.Shared</AssemblyName>
 		<RootNamespace>Semmle.Autobuild.Shared</RootNamespace>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/downgrades/ab09ac8287516082b7a7367f8fda1862b1be47c5/upgrade.properties

@@ -1,3 +0,0 @@
-description: Remove 'kind' from 'attributes'.
-compatability: full
-attributes.rel: reorder attributes.rel (int id, int kind, int type_id, int target) id type_id target

csharp/downgrades/ba2201248071b2bf0bb52909b35014091d2e18a6/upgrade.properties

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

csharp/extractor/Semmle.Extraction.CIL.Driver/Semmle.Extraction.CIL.Driver.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Semmle.Extraction.CIL.Driver</AssemblyName>
     <RootNamespace>Semmle.Extraction.CIL.Driver</RootNamespace>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/extractor/Semmle.Extraction.CIL/Semmle.Extraction.CIL.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Semmle.Extraction.CIL</AssemblyName>
     <RootNamespace>Semmle.Extraction.CIL</RootNamespace>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/extractor/Semmle.Extraction.CSharp.Driver/Semmle.Extraction.CSharp.Driver.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Semmle.Extraction.CSharp.Driver</AssemblyName>
     <RootNamespace>Semmle.Extraction.CSharp.Driver</RootNamespace>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/extractor/Semmle.Extraction.CSharp.Standalone/AssemblyInfo.cs

@@ -146,7 +146,7 @@ namespace Semmle.BuildAnalyser
                  *  loading the same assembly from different locations.
                  */
                 using var pereader = new System.Reflection.PortableExecutable.PEReader(new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read));
-                using var sha1 = SHA1.Create();
+                using var sha1 = new SHA1CryptoServiceProvider();
                 var metadata = pereader.GetMetadata();
                 unsafe
                 {

csharp/extractor/Semmle.Extraction.CSharp.Standalone/BuildAnalysis.cs

@@ -160,7 +160,7 @@ namespace Semmle.BuildAnalyser
         {
             var bytes = Encoding.Unicode.GetBytes(srcDir);
 
-            using var sha1 = SHA1.Create();
+            using var sha1 = new SHA1CryptoServiceProvider();
             var sha = sha1.ComputeHash(bytes);
             var sb = new StringBuilder();
             foreach (var b in sha.Take(8))

csharp/extractor/Semmle.Extraction.CSharp.Standalone/Semmle.Extraction.CSharp.Standalone.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
 		<OutputType>Exe</OutputType>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<AssemblyName>Semmle.Extraction.CSharp.Standalone</AssemblyName>
 		<RootNamespace>Semmle.Extraction.CSharp.Standalone</RootNamespace>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>

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/Attribute.cs

@@ -1,5 +1,3 @@
-using System;
-using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using Microsoft.CodeAnalysis;
@@ -8,28 +6,18 @@ using Semmle.Extraction.Entities;
 
 namespace Semmle.Extraction.CSharp.Entities
 {
-    internal enum AttributeKind
-    {
-        Default = 0,
-        Return = 1,
-        Assembly = 2,
-        Module = 3,
-    }
-
     internal class Attribute : CachedEntity<AttributeData>, IExpressionParentEntity
     {
         bool IExpressionParentEntity.IsTopLevelParent => true;
 
         private readonly AttributeSyntax? attributeSyntax;
         private readonly IEntity entity;
-        private readonly AttributeKind kind;
 
-        private Attribute(Context cx, AttributeData attributeData, IEntity entity, AttributeKind kind)
+        private Attribute(Context cx, AttributeData attributeData, IEntity entity)
             : base(cx, attributeData)
         {
             this.attributeSyntax = attributeData.ApplicationSyntaxReference?.GetSyntax() as AttributeSyntax;
             this.entity = entity;
-            this.kind = kind;
         }
 
         public override void WriteId(EscapingTextWriter trapFile)
@@ -60,7 +48,7 @@ namespace Semmle.Extraction.CSharp.Entities
         public override void Populate(TextWriter trapFile)
         {
             var type = Type.Create(Context, Symbol.AttributeClass);
-            trapFile.attributes(this, kind, type.TypeRef, entity);
+            trapFile.attributes(this, type.TypeRef, entity);
             trapFile.attribute_location(this, Location);
 
             if (attributeSyntax is not null)
@@ -137,36 +125,26 @@ namespace Semmle.Extraction.CSharp.Entities
 
         public override bool NeedsPopulation => true;
 
-        private static void ExtractAttributes(Context cx, IEnumerable<AttributeData> attributes, IEntity entity, AttributeKind kind)
-        {
-            foreach (var attribute in attributes)
-            {
-                Create(cx, attribute, entity, kind);
-            }
-        }
-
         public static void ExtractAttributes(Context cx, ISymbol symbol, IEntity entity)
         {
-            ExtractAttributes(cx, symbol.GetAttributes(), entity, AttributeKind.Default);
-            if (symbol is IMethodSymbol method)
+            foreach (var attribute in symbol.GetAttributes())
             {
-                ExtractAttributes(cx, method.GetReturnTypeAttributes(), entity, AttributeKind.Return);
+                Create(cx, attribute, entity);
             }
         }
 
-
-        public static Attribute Create(Context cx, AttributeData attributeData, IEntity entity, AttributeKind kind)
+        public static Attribute Create(Context cx, AttributeData attributeData, IEntity entity)
         {
-            var init = (attributeData, entity, kind);
+            var init = (attributeData, entity);
             return AttributeFactory.Instance.CreateEntity(cx, attributeData, init);
         }
 
-        private class AttributeFactory : CachedEntityFactory<(AttributeData attributeData, IEntity receiver, AttributeKind kind), Attribute>
+        private class AttributeFactory : CachedEntityFactory<(AttributeData attributeData, IEntity receiver), Attribute>
         {
             public static readonly AttributeFactory Instance = new AttributeFactory();
 
-            public override Attribute Create(Context cx, (AttributeData attributeData, IEntity receiver, AttributeKind kind) init) =>
-                new Attribute(cx, init.attributeData, init.receiver, init.kind);
+            public override Attribute Create(Context cx, (AttributeData attributeData, IEntity receiver) init) =>
+                new Attribute(cx, init.attributeData, init.receiver);
         }
     }
 }

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:

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

@@ -1,5 +1,3 @@
-using System;
-using System.Collections.Generic;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Semmle.Extraction.Kinds;
 using Semmle.Extraction.Entities;
@@ -12,69 +10,17 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
             base(new ExpressionInfo(cx, null, cx.CreateLocation(pp.GetLocation()), ExprKind.PROPERTY_PATTERN, parent, child, false, null))
         {
             child = 0;
+            var trapFile = cx.TrapWriter.Writer;
             foreach (var sub in pp.Subpatterns)
             {
-                if (sub.ExpressionColon is null)
+                var p = Expressions.Pattern.Create(cx, sub.Pattern, this, child++);
+                if (sub.NameColon is null)
                 {
-                    Context.ModelError(sub, "Expected to find 'Expression:' in pattern.");
+                    Context.ModelError(sub, "Expected to find 'Name:' in pattern.");
                     continue;
                 }
-                MakeExpressions(cx, this, sub, child++);
+                trapFile.exprorstmt_name(p, sub.NameColon.Name.ToString());
             }
         }
-
-        private record AccessStep(string Identifier, Microsoft.CodeAnalysis.Location Location);
-
-        private class AccessStepPack
-        {
-            public readonly List<AccessStep> Prefix = new List<AccessStep>();
-            public AccessStep Last { get; private set; }
-
-            public AccessStepPack Add(string identifier, Microsoft.CodeAnalysis.Location location)
-            {
-                Prefix.Add(Last);
-                Last = new AccessStep(identifier, location);
-                return this;
-            }
-
-            public AccessStepPack(string identifier, Microsoft.CodeAnalysis.Location location) =>
-                Last = new AccessStep(identifier, location);
-        }
-
-        private static AccessStepPack GetAccessStepPack(ExpressionSyntax syntax) =>
-            syntax switch
-            {
-                MemberAccessExpressionSyntax memberAccess => GetAccessStepPack(memberAccess.Expression).Add(memberAccess.Name.Identifier.ValueText, memberAccess.Name.Identifier.GetLocation()),
-                IdentifierNameSyntax identifier => new AccessStepPack(identifier.Identifier.Text, identifier.GetLocation()),
-                _ => throw new InternalError(syntax, "Unexpected expression syntax in property patterns."),
-            };
-
-        private static AccessStepPack GetAccessStepPack(BaseExpressionColonSyntax syntax) =>
-            syntax switch
-            {
-                NameColonSyntax ncs => new AccessStepPack(ncs.Name.ToString(), ncs.Name.GetLocation()),
-                ExpressionColonSyntax ecs => GetAccessStepPack(ecs.Expression),
-                _ => throw new InternalError(syntax, "Unsupported expression colon in property pattern."),
-            };
-
-        private static Expression CreateSyntheticExp(Context cx, Microsoft.CodeAnalysis.Location location, IExpressionParentEntity parent, int child) =>
-            new Expression(new ExpressionInfo(cx, null, cx.CreateLocation(location), ExprKind.PROPERTY_PATTERN, parent, child, false, null));
-
-        private static void MakeExpressions(Context cx, IExpressionParentEntity parent, SubpatternSyntax syntax, int child)
-        {
-            var trapFile = cx.TrapWriter.Writer;
-            var pack = GetAccessStepPack(syntax.ExpressionColon!);
-
-            foreach (var step in pack.Prefix)
-            {
-                var exp = CreateSyntheticExp(cx, step.Location, parent, child);
-                trapFile.exprorstmt_name(exp, step.Identifier);
-                parent = exp;
-                child = 0;
-            }
-
-            var p = Expressions.Pattern.Create(cx, syntax.Pattern, parent, child);
-            trapFile.exprorstmt_name(p, pack.Last.Identifier);
-        }
     }
 }

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

@@ -105,8 +105,7 @@ namespace Semmle.Extraction.CSharp.Entities.Expressions
                             }
                             break;
                         default:
-                            var type = variable.GetType().ToString() ?? "null";
-                            throw new InternalError(variable, $"Unhandled designation type {type}");
+                            throw new InternalError(variable, "Unhandled designation type");
                     }
 
                     elementTypes.Add(sub.Type.HasValue && sub.Type.Value.Symbol?.Kind != SymbolKind.ErrorType

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

@@ -262,10 +262,10 @@ namespace Semmle.Extraction.CSharp.Entities
                     return Destructor.Create(cx, methodDecl);
                 case MethodKind.PropertyGet:
                 case MethodKind.PropertySet:
-                    return Accessor.GetPropertySymbol(methodDecl) is IPropertySymbol prop ? Accessor.Create(cx, methodDecl, prop) : OrdinaryMethod.Create(cx, methodDecl);
+                    return Accessor.GetPropertySymbol(methodDecl) is null ? OrdinaryMethod.Create(cx, methodDecl) : (Method)Accessor.Create(cx, methodDecl);
                 case MethodKind.EventAdd:
                 case MethodKind.EventRemove:
-                    return EventAccessor.GetEventSymbol(methodDecl) is IEventSymbol @event ? EventAccessor.Create(cx, methodDecl, @event) : OrdinaryMethod.Create(cx, methodDecl);
+                    return EventAccessor.Create(cx, methodDecl);
                 case MethodKind.UserDefinedOperator:
                 case MethodKind.BuiltinOperator:
                     return UserOperator.Create(cx, methodDecl);

csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/LineDirective.cs

@@ -13,7 +13,7 @@ namespace Semmle.Extraction.CSharp.Entities
                 SyntaxKind.DefaultKeyword => LineDirectiveKind.Default,
                 SyntaxKind.HiddenKeyword => LineDirectiveKind.Hidden,
                 SyntaxKind.NumericLiteralToken => LineDirectiveKind.Numeric,
-                _ => throw new InternalError(trivia, $"Unhandled line token kind {trivia.Line.Kind()}")
+                _ => throw new InternalError(trivia, "Unhandled line token kind")
             })
         {
         }

csharp/extractor/Semmle.Extraction.CSharp/Entities/PreprocessorDirectives/NullableDirective.cs

@@ -18,7 +18,7 @@ namespace Semmle.Extraction.CSharp.Entities
                 SyntaxKind.DisableKeyword => 0,
                 SyntaxKind.EnableKeyword => 1,
                 SyntaxKind.RestoreKeyword => 2,
-                _ => throw new InternalError(Symbol, $"Unhandled setting token kind {Symbol.SettingToken.Kind()}")
+                _ => throw new InternalError(Symbol, "Unhandled setting token kind")
             };
 
             var target = Symbol.TargetToken.Kind() switch
@@ -26,7 +26,7 @@ namespace Semmle.Extraction.CSharp.Entities
                 SyntaxKind.None => 0,
                 SyntaxKind.AnnotationsKeyword => 1,
                 SyntaxKind.WarningsKeyword => 2,
-                _ => throw new InternalError(Symbol, $"Unhandled target token kind {Symbol.TargetToken.Kind()}")
+                _ => throw new InternalError(Symbol, "Unhandled target token kind")
             };
 
             trapFile.directive_nullables(this, setting, target);

csharp/extractor/Semmle.Extraction.CSharp/Entities/Statements/Case.cs

@@ -23,7 +23,7 @@ namespace Semmle.Extraction.CSharp.Entities.Statements
                 case SyntaxKind.CasePatternSwitchLabel:
                     return CasePattern.Create(cx, (CasePatternSwitchLabelSyntax)node, parent, child);
                 default:
-                    throw new InternalError(node, $"Unhandled case label of kind {node.Kind()}");
+                    throw new InternalError(node, "Unhandled case label");
             }
         }
     }

csharp/extractor/Semmle.Extraction.CSharp/Entities/Types/TypeParameter.cs

@@ -1,5 +1,7 @@
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Semmle.Extraction.Entities;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 
@@ -19,9 +21,33 @@ namespace Semmle.Extraction.CSharp.Entities
 
         public override void Populate(TextWriter trapFile)
         {
-            trapFile.types(this, Kinds.TypeKind.TYPE_PARAMETER, Symbol.Name);
+            var constraints = new TypeParameterConstraints(Context);
+            trapFile.type_parameter_constraints(constraints, this);
 
-            TypeParameterConstraints.Create(Context, this);
+            if (Symbol.HasReferenceTypeConstraint)
+                trapFile.general_type_parameter_constraints(constraints, 1);
+
+            if (Symbol.HasValueTypeConstraint)
+                trapFile.general_type_parameter_constraints(constraints, 2);
+
+            if (Symbol.HasConstructorConstraint)
+                trapFile.general_type_parameter_constraints(constraints, 3);
+
+            if (Symbol.HasUnmanagedTypeConstraint)
+                trapFile.general_type_parameter_constraints(constraints, 4);
+
+            if (Symbol.ReferenceTypeConstraintNullableAnnotation == NullableAnnotation.Annotated)
+                trapFile.general_type_parameter_constraints(constraints, 5);
+
+            foreach (var abase in Symbol.GetAnnotatedTypeConstraints())
+            {
+                var t = Create(Context, abase.Symbol);
+                trapFile.specific_type_parameter_constraints(constraints, t.TypeRef);
+                if (!abase.HasObliviousNullability())
+                    trapFile.specific_type_parameter_nullability(constraints, t.TypeRef, NullabilityEntity.Create(Context, Nullability.Create(abase)));
+            }
+
+            trapFile.types(this, Kinds.TypeKind.TYPE_PARAMETER, Symbol.Name);
 
             var parentNs = Namespace.Create(Context, Symbol.TypeParameterKind == TypeParameterKind.Method ? Context.Compilation.GlobalNamespace : Symbol.ContainingNamespace);
             trapFile.parent_namespace(this, parentNs);

csharp/extractor/Semmle.Extraction.CSharp/Entities/Types/TypeParameterConstraints.cs

@@ -1,65 +1,14 @@
-using Microsoft.CodeAnalysis;
 using System.IO;
 
 namespace Semmle.Extraction.CSharp.Entities
 {
-    internal class TypeParameterConstraints : CachedEntity<ITypeParameterSymbol>
+    internal class TypeParameterConstraints : FreshEntity
     {
-        private readonly TypeParameter parent;
+        public TypeParameterConstraints(Context cx)
+            : base(cx) { }
 
-        public TypeParameterConstraints(Context cx, TypeParameter parent)
-            : base(cx, parent.Symbol)
+        protected override void Populate(TextWriter trapFile)
         {
-            this.parent = parent;
-        }
-
-        public override void WriteId(EscapingTextWriter trapFile)
-        {
-            trapFile.WriteSubId(parent);
-            trapFile.Write(";typeparameterconstraints");
-        }
-
-        public override bool NeedsPopulation => true;
-
-        public override void Populate(TextWriter trapFile)
-        {
-            trapFile.type_parameter_constraints(this, parent);
-
-            if (Symbol.HasReferenceTypeConstraint)
-                trapFile.general_type_parameter_constraints(this, 1);
-
-            if (Symbol.HasValueTypeConstraint)
-                trapFile.general_type_parameter_constraints(this, 2);
-
-            if (Symbol.HasConstructorConstraint)
-                trapFile.general_type_parameter_constraints(this, 3);
-
-            if (Symbol.HasUnmanagedTypeConstraint)
-                trapFile.general_type_parameter_constraints(this, 4);
-
-            if (Symbol.ReferenceTypeConstraintNullableAnnotation == NullableAnnotation.Annotated)
-                trapFile.general_type_parameter_constraints(this, 5);
-
-            foreach (var abase in Symbol.GetAnnotatedTypeConstraints())
-            {
-                var t = Type.Create(Context, abase.Symbol);
-                trapFile.specific_type_parameter_constraints(this, t.TypeRef);
-                if (!abase.HasObliviousNullability())
-                    trapFile.specific_type_parameter_nullability(this, t.TypeRef, NullabilityEntity.Create(Context, Nullability.Create(abase)));
-            }
-        }
-
-        public override Location? ReportingLocation => null;
-
-        public static TypeParameterConstraints Create(Context cx, TypeParameter p) =>
-            TypeParameterConstraintsFactory.Instance.CreateEntity(cx, (typeof(TypeParameterConstraints), p), p);
-
-        private class TypeParameterConstraintsFactory : CachedEntityFactory<TypeParameter, TypeParameterConstraints>
-        {
-            public static TypeParameterConstraintsFactory Instance { get; } = new TypeParameterConstraintsFactory();
-
-            public override TypeParameterConstraints Create(Context cx, TypeParameter init) => new(cx, init);
         }
     }
 }
-

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

@@ -178,9 +178,6 @@ namespace Semmle.Extraction.CSharp.Entities
         /// <returns>The converted name.</returns>
         private static string OperatorSymbol(Context cx, IMethodSymbol method)
         {
-            if (method.ExplicitInterfaceImplementations.Any())
-                return OperatorSymbol(cx, method.ExplicitInterfaceImplementations.First());
-
             var methodName = method.Name;
             if (!OperatorSymbol(methodName, out var result))
                 cx.ModelError(method, $"Unhandled operator name in OperatorSymbol(): '{methodName}'");

csharp/extractor/Semmle.Extraction.CSharp/Populators/TypeContainerVisitor.cs

@@ -36,7 +36,7 @@ namespace Semmle.Extraction.CSharp.Populators
 
         public override void DefaultVisit(SyntaxNode node)
         {
-            throw new InternalError(node, $"Unhandled top-level syntax node of type  {node.GetType()}");
+            throw new InternalError(node, "Unhandled top-level syntax node");
         }
 
         public override void VisitGlobalStatement(GlobalStatementSyntax node)
@@ -86,17 +86,11 @@ namespace Semmle.Extraction.CSharp.Populators
                 return;
 
             var outputAssembly = Assembly.CreateOutputAssembly(Cx);
-            var kind = node.Target?.Identifier.Kind() switch
-            {
-                SyntaxKind.AssemblyKeyword => Entities.AttributeKind.Assembly,
-                SyntaxKind.ModuleKeyword => Entities.AttributeKind.Module,
-                _ => throw new InternalError(node, "Unhandled global target")
-            };
             foreach (var attribute in node.Attributes)
             {
                 if (attributeLookup.Value(attribute) is AttributeData attributeData)
                 {
-                    var ae = Entities.Attribute.Create(Cx, attributeData, outputAssembly, kind);
+                    var ae = Entities.Attribute.Create(Cx, attributeData, outputAssembly);
                     Cx.BindComments(ae, attribute.GetLocation());
                 }
             }

csharp/extractor/Semmle.Extraction.CSharp/Semmle.Extraction.CSharp.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<AssemblyName>Semmle.Extraction.CSharp</AssemblyName>
 		<RootNamespace>Semmle.Extraction.CSharp</RootNamespace>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/extractor/Semmle.Extraction.CSharp/Tuples.cs

@@ -32,8 +32,8 @@ namespace Semmle.Extraction.CSharp
         internal static void array_element_type(this TextWriter trapFile, ArrayType array, int dimension, int rank, Type elementType) =>
             trapFile.WriteTuple("array_element_type", array, dimension, rank, elementType);
 
-        internal static void attributes(this TextWriter trapFile, Attribute attribute, AttributeKind kind, Type attributeType, IEntity entity) =>
-            trapFile.WriteTuple("attributes", attribute, kind, attributeType, entity);
+        internal static void attributes(this TextWriter trapFile, Attribute attribute, Type attributeType, IEntity entity) =>
+            trapFile.WriteTuple("attributes", attribute, attributeType, entity);
 
         internal static void attribute_location(this TextWriter trapFile, Attribute attribute, Location location) =>
             trapFile.WriteTuple("attribute_location", attribute, location);

csharp/extractor/Semmle.Extraction.Tests/Semmle.Extraction.Tests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 		<RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
 		<Nullable>enable</Nullable>

csharp/extractor/Semmle.Extraction/Semmle.Extraction.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<AssemblyName>Semmle.Extraction</AssemblyName>
 		<RootNamespace>Semmle.Extraction</RootNamespace>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/extractor/Semmle.Util.Tests/Semmle.Util.Tests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net6.0</TargetFramework>
+		<TargetFramework>net5.0</TargetFramework>
 		<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
 		<RuntimeIdentifiers>win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
 		<Nullable>enable</Nullable>

csharp/extractor/Semmle.Util/FileUtils.cs

@@ -84,7 +84,7 @@ namespace Semmle.Util
         public static string ComputeFileHash(string filePath)
         {
             using var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
-            using var shaAlg = SHA256.Create();
+            using var shaAlg = new SHA256Managed();
             var sha = shaAlg.ComputeHash(fileStream);
             var hex = new StringBuilder(sha.Length * 2);
             foreach (var b in sha)

csharp/extractor/Semmle.Util/Semmle.Util.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Semmle.Util</AssemblyName>
     <RootNamespace>Semmle.Util</RootNamespace>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>

csharp/ql/examples/qlpack.yml

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

csharp/ql/lib/change-notes/2021-02-02-return-value-attributes.md

@@ -1,5 +0,0 @@
----
-category: majorAnalysis
----
-* Return value attributes are extracted.
-* The QL `Attribute` class now has subclasses for each kind of attribute.