Follow-up to the member/top-level delegated-accessor convergence, covering the
remaining case: a LOCAL delegated property (declared inside a function body,
e.g. `val x: Int by DelegateProvider()`).
Unlike member/top-level delegated properties, a local delegated property's
forwarding get/set is inlined into the enclosing function rather than
materialised as a `DELEGATED_PROPERTY_ACCESSOR`, so the previous fix
(getDelegatedAccessorSyntheticArgumentLocation, gated on that origin) did not
apply. Because a local property has no dispatch/extension receiver, its
synthetic `thisRef` argument (passed to the delegate's
`provideDelegate`/`getValue`/`setValue`) is always a `null` constant with no
source token.
Under K1 this synthetic `null` was given a bogus location `1:9:1:12`: its IR
offsets (8..11) are not real source offsets and `findPsiElement` resolves them
to the file's line-1 `import`. K2 records it at the whole-file location
`0:0:0:0`, which is the honest representation for an argument with no source
token, and is the canonical target for this unification.
This change adds `getLocalDelegatedPropertySyntheticNullLocation`, gated on:
- a scoped context (`currentLocalDelegatedProperty`) that is set only while
extracting a specific `IrLocalDelegatedProperty`'s generated artifacts
(its delegate initializer and forwarding get/set),
- the element being a `null` `CodeQLIrConst`, and
- the element offsets lying outside the property's `KtProperty` text range
(so a genuine source `null` inside the delegate expression, e.g.
`by foo(null)`, is never relocated).
It returns the whole-file location, mirroring K2. Per the design review, this
is deliberately a distinct, narrowly-scoped path anchored on the local
delegated property being extracted, NOT a relaxation of the accessor-origin
gate to arbitrary enclosing functions (which would risk moving genuine source
`null`/`this` literals). It relies on PSI, so it is a no-op under K2.
Verified via full dual-suite relearn (CI-faithful: 2.3.20/lang-1.9 for tk1,
default/2.4.0 for tk2, database consistency checks): all 3333 tests pass. Only
two tk1 files change (exprs.expected and its PrintAst), each a single row
relocating the synthetic `null` from `1:9:1:12` to `0:0:0:0`; the NullLiteral
rows now match test-kotlin2 exactly, no `1:9:1:12` bogus locations remain
anywhere in test-kotlin1, and test-kotlin2 is byte-for-byte unchanged.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
For `val x by Delegate()`, the compiler synthesises getter/setter bodies that
forward to the delegate's `getValue`/`setValue`, passing a synthetic receiver
argument (the enclosing `this`, or `null` for top-level/extension delegates).
Under the K1 frontend (test-kotlin1, `-language-version 1.9`) these synthetic
receiver arguments were given a bogus location `1:9:1:12`: their IR offsets
(8..11) are not real source offsets for the argument, and `findPsiElement`
resolves them to whatever sits at file offset 8, which for these tests is the
line-1 `import`. This is meaningless and makes the receivers un-searchable by
location.
The K2 frontend (test-kotlin2, default) already produces the intuitive result:
the synthetic member receiver is located at the DELEGATE EXPRESSION (e.g.
`by ResourceDelegate()` -> `ResourceDelegate()`), and a receiver-less `null`
argument gets the whole-file location `0:0:0:0`. K2 output is the canonical
target for this unification (it is also compiler-version-independent).
This change adds `getDelegatedAccessorSyntheticArgumentLocation`, gated on:
- the enclosing declaration being an IrFunction with origin
DELEGATED_PROPERTY_ACCESSOR (member/top-level accessors only),
- the element being either the accessor's dispatch/extension receiver
`IrGetValue` or a null `CodeQLIrConst`, and
- the element offsets lying outside the enclosing `KtProperty` text range
(so genuine in-source expressions are never rehomed).
It returns the delegate expression's location for the `this`/receiver case and
the whole-file location for the `null` case, mirroring K2. It is wired at the
three sites that extract these synthetic args (extractThisAccess, the
IrGetValue variable/extension-receiver path, and the null case of
extractConstant).
The helper relies on PSI (getPsi2Ir), so it is a no-op under K2: test-kotlin2
output is unchanged (verified). Only test-kotlin1 converges.
Trade-offs / scope:
- LOCAL delegated properties (declared inside a function body) are a distinct
mechanism: their get/set is inlined into the enclosing function (no
DELEGATED_PROPERTY_ACCESSOR origin) and the residual divergence there is an
end-offset difference, not the `1:9:1:12` bug. They are deliberately left
for a separate commit.
- The `$delegate` backing-variable initializer/type-access spans still differ
between suites (e.g. `4:18` vs `4:21`); that is an unrelated mechanism and
is not touched here.
- The outside-KtProperty-range gate could in principle false-negative for a
delegated property declared at the very top of a file (offsets <= 11); this
is preferred to over-correcting real expressions and is not observed in the
test corpus.
Relearned test-kotlin1 expected updated (exprs, methods; incl. PrintAst).
Verified via full dual-suite relearn (CI-faithful: 2.3.20/lang-1.9 for tk1,
default/2.4.0 for tk2, database consistency checks): all 3333 tests pass, only
the three delegates-related tk1 files change, every changed row is a pure
relocation of a synthetic receiver from `1:9:1:12` to the K2 target, and
test-kotlin2 is byte-for-byte unchanged.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
For an indexed array assignment `a[i] = v` (and its compound forms `a[i] op= v`),
the K1 and K2 frontends disagree on the source location of both the synthesised
array-access node (`...[...]`) and the assignment node (`...=...`/`...op=...`):
- K1 records the end offset at the left-hand side array access, e.g.
`a1[0] = a1[0]` gets `12:3:12:7` (just `a1[0]`).
- K2 spans through the assigned value, e.g. `12:3:12:15` (the whole `a1[0] = a1[0]`).
Decision: adopt the K2 span. An assignment expression should cover its whole
source range (left-hand side through the right-hand value), consistent with how
ordinary (non-indexed) assignments are already located and with the Java
extractor's array-store locations. This makes location-based queries (and any
`...=...`/`...[...]` overlap reasoning) behave the same regardless of frontend.
Implementation: the set operation is desugared to an array `set` call. Two code
paths build these nodes, and both used the raw call/block end offset:
- simple `a[i] = v` -> the `Array.set` IrCall branch in `extractCall`
- compound `a[i] op= v` -> `tryExtractArrayUpdate`
Each now widens the end offset to the assigned value's end via a small offset-based
`correctedEndOffset(rawEnd, valueEnd)` helper (extracted from the existing
`correctedEndOffset(IrExpression)` so the two share one rule). The widening only
fires when the value's end lies past the raw end, so it is a no-op under K2 (where
the raw end already spans the value) and ignores undefined/synthetic offsets. A new
`TrapWriter.getLocation(e, endOffset)` overload preserves the existing IrCall
start-offset adjustment while overriding just the end.
Tradeoff: the change is deliberately scoped to the two array-assignment paths
rather than globally rewriting how set-call locations are derived, to avoid
perturbing unrelated expressions. Only the `test-kotlin1` array expected files
change; `test-kotlin2` is unaffected, and the two suites' `arrayAccesses` and
`assignExprs` expected files are now byte-identical. All 3333 tests pass in both
K1 and K2 modes (with database-consistency checks).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The K1 frontend records an assignment's raw end offset at its left-hand
side rather than past its right-hand value, so the ExprStmt wrapper
synthesised around a bare assignment statement (`z = 4`) collapses onto the
LHS and produces a zero-width span. K2 spans the whole assignment.
Widen the ExprStmt wrapper location to end past the assigned value via a new
`getExpressionStmtLocation` helper (reusing `correctedEndOffset`). This makes
the wrapper match the inner `AssignExpr`, which already uses
`e.startOffset .. rhsValue.endOffset`. The helper is a no-op for
non-assignments and under K2, where the assignment already spans its value.
Example (stmts.kt:17):
before: 17:37:17:37 (collapsed onto LHS `z`)
after: 17:37:17:41 (spans `z = 4`, matching K2)
Only the K1 (test-kotlin1) expected files change; the K2 (test-kotlin2)
expected files are unchanged. Controlflow expected files converge as a pure
cascade of the location shift (dominator.expected fully converges).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The K1 frontend lowers `if`/`when` branches with their raw IR offsets
collapsed onto the whole enclosing IrWhen expression, so every branch
reports the same span (e.g. `stmts.kt:17:26:17:58`). K2 records per-branch
spans reconstructed from the branch condition start through the result end
(or just the result span for an `else` branch).
Reconstruct the per-branch span from the branch's own condition/result
offsets, gated on the raw branch span being collapsed onto the enclosing
IrWhen (as under K1); under K2 the raw per-branch offsets already differ so
the helper is a no-op. `correctedEndOffset` additionally fixes K1 recording
a bare assignment's raw end at its left-hand side rather than past its
right-hand value.
Example (stmts.kt:17):
before: 17:26:17:58 (x2, both branches collapsed onto the IrWhen)
after: 17:29:17:43 and 17:50:17:58 (per-branch, matching K2)
Only the K1 (test-kotlin1) expected files change; the K2 (test-kotlin2)
expected files are unchanged. Controlflow expected files converge as a pure
cascade of the branch-location shift.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The synthesised body of a delegated-property accessor (`get`/`getValue`/
`setValue`/`invoke` calls, the `<prop>$delegate` access, associated type
accesses and property-reference classes) carries the source range of the
whole `KtPropertyDelegate` node. The K1 frontend's range starts at the
`by` keyword; K2 starts at the delegate expression itself
(e.g. `lazy { ... }`), three columns later. The `by` keyword is syntactic
glue in the property declaration, not part of the expression being
evaluated, so K2's narrower range is the more intuitive one. Adopt it for
both frontends. Example:
get / getValue / invoke ... 6:24:9:9 -> 6:27:9:9
Add a scoped offset remap on `FileTrapWriter`: while extracting a
`DELEGATED_PROPERTY_ACCESSOR` body, any location whose offsets exactly
equal the `by`-inclusive delegate range is emitted with the delegate
expression's range instead. The range is recovered from the enclosing
`KtProperty`'s PSI (`delegate.expression`), which is available under K1;
under K2 there is no PSI so the remap is inactive and the raw offsets
already exclude `by`. Matching the full delegate range exactly means only
these synthesised body expressions are affected.
Updates test-kotlin1 expected only (test-kotlin2 unchanged).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
For local and member delegated properties, the synthesised accessor
(`<get-prop>`/`<set-prop>`) and its generated wrapper class/constructor
were anchored by the K1 frontend at the delegate expression rather than
at the property declaration. K2 (raw IR) anchors them at the property
`val`/`var` keyword through the end of the delegate, i.e. the whole
`KtProperty` span.
Adopt the K2 span for both frontends so the extractor emits identical
locations regardless of the supplied language version. Example:
<get-prop1> 6:24:9:9 -> 6:9:9:9
Add `getPsiBasedDelegatedAccessorLocation`, which walks from the
accessor's PSI up to the enclosing `KtProperty` and returns its span.
It returns null when there is no PSI (K2) or no enclosing property, so
K2 keeps its native locations and non-delegated callables are
unaffected. Wire it into `extractFunction`'s location chain and into
`extractGeneratedClass` (guarded on `DELEGATED_PROPERTY_ACCESSOR`) so the
generated class/constructor sorts before the method, matching K2.
Updates test-kotlin1 expected only (test-kotlin2 unchanged).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The K1 and K2 frontends record different source locations for the
compiler-synthesised primary constructor of a class that declares no primary
constructor in source. K2 uses the class declaration's raw IR offsets, which
include any leading modifier keywords, while K1's raw offsets start at the
`class` keyword and omit the modifiers.
Since K1 (unlike K2) retains the PSI, we recover the modifier-inclusive span
from the enclosing KtClassOrObject so K1 matches the K2-native span.
Example, for `open class C0<V> {}` on line 11 (the `open` modifier is at
column 1, the `class` keyword at column 6):
before (K1): generics.kt:11:6:11:19 | C0 | C0()
after (K1): generics.kt:11:1:11:19 | C0 | C0() (matches K2)
The fix is deliberately narrow and leaves all other constructors untouched:
- explicit primary constructors (`class C1(val t: T)`, `class C2()`) keep
their own parameter-list location, which both frontends already agree on;
- explicit secondary constructors keep their own location (only the
`isPrimary` constructor is adjusted);
- specialised/parameterised copies of a generic constructor
(`typeSubstitution != null`) are excluded, so they do not gain a spurious
source location and appear in source-filtered queries.
Relearned test-kotlin1 (K1) and test-kotlin2 (K2): all 3333 tests pass with
database-consistency checks. Only test-kotlin1 expected files change (K2 output
is unchanged, as K2 already emits these spans natively). No previously matching
row diverges; net K1-vs-K2 divergence decreases on every affected file, with
generics, generic-inner-classes and modifiers now fully identical.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Synthesised and bare `get`/`set` accessors were extracted with different
source locations depending on the frontend:
val typedProp: Int = 3 // getTypedProp
K1: 5:5:5:17 (val..name) K2: 5:5:5:22 (val..type)
val defaultGetter = 7
get // getDefaultGetter
K1: 19:5:19:21 (property head) K2: 20:13:20:15 (`get` keyword)
Under K2 the extractor has no PSI back-mapping for these accessors
(`getKtFile` returns null), so it cannot reproduce K1's property-name-end
span; K2 instead falls back to the raw IR offsets. Rather than converge on a
value K2 cannot produce, K1 is made to match the K2-native spans via the PSI:
* a bare `get`/`set` keyword now points at the keyword token; and
* a fully synthesised accessor now spans the property signature
(`val`/`var` .. type annotation, or .. name when untyped), excluding the
initialiser.
Explicit-body accessors (`get() = 5`) are unaffected: they are located at
their body and never take this override.
Only K1 output changes; the test-kotlin2 (K2) expected files are unchanged.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Anchor a property backing field's location on its property declaration (the
`val`/`var` keyword to the end of the declaration) rather than the raw IR
offset. The raw `IrField` offset is inconsistent between frontends: under
`-language-version 1.9` it includes leading modifiers in the span start, while
under 2.0 it starts at the `val`/`var` keyword.
Example: `private val privateProp: Int = 0`
before (lang 1.9): properties.kt:35:5:35:32 | int privateProp; (col 5 = `private`)
after (lang 1.9): properties.kt:35:13:35:32 | int privateProp; (col 13 = `val`)
lang 2.0 (unchanged): properties.kt:35:13:35:32 | int privateProp;
The property entity already uses this PSI-based anchor (getPsiBasedLocation),
so the field now matches its own property location, which is what the 2.0
frontend already emits.
Delegated properties are excluded via `isDelegated`: their field is the
`$delegate` storage, whose location is the delegate expression rather than the
property declaration, and is converged separately.
This is a no-op for `-language-version 2.0` (only test-kotlin1 expected files
change); the two suites' backing-field and field-type-access locations now
agree.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
The local variable declaration expression (extractVariableExpr) computed its
location via getPsiBasedLocation(v as IrElement). The `as IrElement` cast forced
overload resolution to the generic getPsiBasedLocation(IrElement), which resolves
the PSI element straight from the IR element's raw source offsets via
PsiSourceManager.findPsiElement. Those offsets differ between the two frontend
language versions:
fun f(param: Int) {
val local1 = 2 + 3 // line 6: ` val local1 = 2 + 3`
}
- With -language-version 1.9 the IrVariable offsets cover only the name, so
findPsiElement returns the name leaf and the variable is located at 6:13:6:18.
- With -language-version 2.0 the IrVariable offsets cover the whole declaration,
so it is located at 6:9:6:26 (the `val` keyword through the initialiser).
The IrVariable-specific overload getPsiBasedLocation(IrVariable) is frontend
stable: it finds the leaf at the variable's start offset, walks up to the
enclosing KtVariableDeclaration and returns the span from the `val`/`var` keyword
to the end of the declaration. Using it for the entity location makes both
language versions emit the full declaration span 6:9:6:26.
This is the same helper already used for the enclosing localvariabledeclstmt
location; this change applies it to the variable entity (localvars / the
localvariabledeclexpr) as well, so the two are consistent.
Effect: 12 test-kotlin1 expected files move toward the test-kotlin2 output (all
strictly reduce the tk1-vs-tk2 difference; e.g. variables 16->4, reflection
111->67, exprs 1759->1363 diff lines). test-kotlin2 output is unchanged (the
overload produces the same span there as the generic one did). Both suites pass
all 3333 tests with --check-databases.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Also update the enhanced-nullability Kotlin integration test expected: its
local variable declaration expression now spans the val/var keyword to the
initialiser (user.kt:2:7:2:7 -> user.kt:2:3:2:16), consistent with the
library-test convergence.
K1 IrProperty.startOffset includes leading modifiers (private, abstract,
lateinit, annotations) in the span start; K2 already starts at val/var.
Walk the PSI tree from p.startOffset to the enclosing KtProperty, then use
valOrVarKeyword.startOffset as the declaration start, giving a consistent
start in both K1 and K2.
Two related but distinct locations are derived from the KtProperty:
- The property itself spans val/var through the end of the full
declaration (KtProperty.endOffset), including an explicit getter/setter
body on a following line. This is getPsiBasedLocation(IrProperty).
- Synthesised accessors (DEFAULT_PROPERTY_ACCESSOR origin) span val/var
through the end of the property name (KtProperty.nameIdentifier.endOffset)
via getPsiBasedAccessorLocation, applied through accessorOverride().
Explicit getter/setter bodies keep their own independently computed
location.
This makes K1 accessor locations match K2 and gives each synthesised
accessor a precise span, rather than the property's full declaration span.
Example (properties.kt line 3, "var modifiableInt = 1"):
property modifiableInt -> 3:5:3:25 (val/var .. end of "= 1")
accessor getModifiableInt -> 3:5:3:21 (val/var .. end of name)
accessor setModifiableInt -> 3:5:3:21
Because accessor locations appear wherever accessors are reported, this
refinement updates many expected files (property listings, modifiers,
methods, reflection, control-flow and expression dumps). Every change is a
location-coordinate change only: no result tuple is added or removed.
The PSI-based location is restricted to unspecialised extractions
(classTypeArgsIncludingOuterClasses.isNullOrEmpty()). Specialised generic
instances (e.g. C<String>.prop) continue to use the binary whole-file
location returned by getLocation(p, typeArgs), preserving the existing
behaviour that keeps them absent from fromSource() queries.
The visibility merge in extractFunction is extended to accept an
overriddenAttributes parameter from the caller; the internal fake-override
visibility adjustment (DescriptorVisibilities.PUBLIC for Java binary Object
methods) is merged with any caller-supplied attributes so that neither
overrides the other silently.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
In K1 mode, IrVariable.startOffset points to the name identifier and
IrVariable.endOffset is also at the name end, giving a location that
covers only the variable name (e.g. "local1") rather than the full
declaration ("val local1 = 2 + 3").
In K2 mode the IR offsets already point from the val/var keyword to the
end of the initializer, matching the intuitive source span.
Fix this for K1 by adding an IrVariable-specific overload of
getPsiBasedLocation that:
1. finds the leaf PSI element at v.startOffset (the name identifier)
2. walks up to the enclosing KtVariableDeclaration (KtProperty)
3. uses the val/var keyword position as the start offset to exclude
any leading annotations from the span
This matches the K2 IR behavior and gives a more complete location for
variable declarations when used in CodeQL queries.
The fix applies to both K1 and K2 since the overload is unconditional;
for K2 the walk-up gives the same result as before.
Expected updates in test-kotlin1:
- variables: local variable locations now span from val/var to initializer
- exprs, stmts, methods, modifiers, reflection: same local variable span
- controlflow/basic: CFG node references updated for new variable spans
(the "var ...;" node now starts at the val/var keyword)
Class member and top-level properties (IrProperty, not IrVariable) are
not affected by this change and retain their existing location behaviour.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
In K1 mode, the IrCall node for the !! operator stores startOffset at
the '!' character rather than at the start of the operand. This means
that x!! was previously reported as spanning from '!' to the end of the
expression, omitting the operand from the location.
Fix this by computing the NotNullExpr location from the value argument's
startOffset (the operand) to c.endOffset. This matches the K2 behaviour
where the IrCall.startOffset already points at the operand.
The fix guards against invalid (< 0) offsets on either side and falls
back to the default IrCall location in those cases.
Updated expected files in test-kotlin1:
- exprs/unaryOp.expected: !! locations now start at operand column
- exprs/exprs.expected: same (NotNullExpr entries corrected)
- exprs/binop.expected: !! child locations now correct (parent binop
location for s!!.plus(5) still differs due to a separate K1 IR
limitation where the enclosing call inherits the wrong receiver offset)
- controlflow/basic/bbStmts.expected: CFG references to !! now use the
improved location
- controlflow/basic/getASuccessor.expected: same
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
K1 and K2 IR backends compute source locations differently. K1 uses the IR
node's synthetic startOffset/endOffset, while K2 reconstructs source positions
from PSI. For expression-level nodes this causes location differences across
the two language modes.
Introduce PSI-backed location lookup as the preferred source for spans wherever
PSI is available:
getPsiBasedLocation(element) ?: tw.getLocation(element)
getPsiBasedLocation() resolves the PSI element for the IR node via
psi2Ir.findPsiElement() and builds a location from its startOffset..endOffset.
currentIrFile is tracked in extractFileContents so the PSI lookup has the
file context it needs.
Applied to expression-level nodes (both K1 and K2 modes):
- local variable declarations (extractVariable, extractVariableExpr)
- IrLocalDelegatedProperty blocks
- IrWhen expressions and when-branches
- IrGetValue (varaccess) expressions
- IrFunctionExpression (lambda) nodes
- Block statements (extractBlock)
- this/super access expressions (extractThisAccess)
- String literals
Declaration-level nodes (class, function, property) are guarded with
if (usesK2) to avoid a regression in K1 mode where the PSI lookup causes
parameterised type instantiations to appear as fromSource(), inflating
generic-type query results. The K1 IR frontend does not map all declaration
nodes cleanly to source PSI elements; for these nodes we keep the original
IR-based location in K1 mode.
Expected output changes (both suites):
- controlflow/basic/bbStmts, bbStrictDominance, bbSuccessor, getASuccessor,
strictDominance: when-branch and varaccess location improvements
- java-kotlin-collection-type-generic-methods/test: new stdlib entries from
JDK update (AbstractCollection<Runnable> methods)
- annotation_classes/PrintAst: variable access location improvement in K1
- classes/genericExprTypes: location improvement in K1
- compilation-units/cus: removed two internal JDK inner-class entries (stdlib
version change)
- reflection/reflection: removed a few external-class entries (stdlib version)
Verified: all 285 tests pass for both test-kotlin1 (kotlinc 2.3.20 / K1) and
test-kotlin2 (kotlinc 2.4.0 / K2).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copy K1's richer C2.kt (which includes test2, test3 and l.get(0) in test)
into test-kotlin2. K2 in -language 2.0 mode already tracks dataflow through
array.set() and indirect wrapper calls, so the additional tests produce results
identical to K1.
The expected files for test-kotlin1 and test-kotlin2 are now byte-identical for
this test.
Verified:
- test-kotlin1 (kotlinc 2.3.20 / -language 1.9): all tests pass
- test-kotlin2 (kotlinc 2.4.0 / -language 2.0): all tests pass
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Remove the K1-only comment '// This doesn't generate a throw statement in
Kotlin 1 mode' from test-kotlin1/library-tests/generated-throws/generated-throws.kt
so the source files are byte-identical between the two suites.
The expected outputs still legitimately differ: in K2 mode the compiler generates
an implicit throw NoWhenBranchMatchedException for the exhaustive sealed-class when
expression, but the K1 frontend does not emit this node. This is a mode-specific
behaviour difference that cannot be bridged by an extractor change.
Both tests continue to pass:
- test-kotlin1 (kotlinc 2.3.20 / -language 1.9): 0 throw results (unchanged)
- test-kotlin2 (kotlinc 2.4.0 / -language 2.0): 1 throw result (unchanged)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
In K2 mode the frontend emits `-123L` as IrCall(unaryMinus, IrConst(123L))
rather than IrConst(-123L) as in K1. Queries that search for negative numeric
literals therefore need to match both a UnaryMinusExpr wrapping a literal and a
plain literal, depending on language mode.
Fix: when extractCallExpression encounters an isNumericFunction(unaryMinus) call
whose dispatchReceiver is already an IrConst, fold the negation into the constant
before extracting. The resulting literal node is identical to what K1 emits.
Location: extend the span one character to the left to cover the `-` sign.
In K2 the IrCall's startOffset equals the receiver's startOffset, so we recover
the minus by subtracting one from the receiver offset.
K1 is unaffected: the K1 frontend folds the sign into the constant before IR
generation, so this new branch never triggers when compiling with -language 1.9.
Expected output changes:
- test-kotlin2/library-tests/literals/literals.expected: negative long, float and
double literals now appear as plain typed literals instead of as UnaryMinus nodes.
The file is now byte-identical to test-kotlin1/library-tests/literals/literals.expected.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
- Port ministdlib from test-kotlin1 to test-kotlin2. The ministdlib test
exercises a minimal Kotlin standard library written from scratch. Its
options file is updated to include -language-version 2.0 so the test
runs in K2 mode when the K2 compiler is active.
- Port nested_types from test-kotlin2 to test-kotlin1. The nested_types
test exercises type-alias and inner-type queries. Expected output is
identical in K1 and K2 modes so no expected-file changes are needed.
- Add test-kotlin2/options with codeql-extractor-kotlin-options:
-language-version 2.0. The CodeQL CLI adds -language-version 1.9 by
default in legacy test extraction mode. Without this override the K2
test suite would run in K1 mode, defeating the purpose of the split.
Both ministdlib and nested_types produce byte-identical expected output
across K1 (2.3.20, -language-version 1.9) and K2 (2.4.0, default K2).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Note that when a line is marked `// BAD [NOT DETECTED]` but actually has
an alert, I assume that the `[NOT DETECTED]` is outdated and should be
deleted.
