It's caused by checking the return type of an inherited property.
toConeKotlinTypeProbablyFlexible() returns an error type when the
type ref is unresolved instead of throwing.
This "breaks" some override checks and in the added test, it leads
to an additional candidate being created for a synthetic property.
However, the candidate has applicability K2_SYNTHETIC_RESOLVED
and gets filtered out because the real property has a higher
applicability.
#KT-66392 Fixed
There's a separate test data directory `testsWithJvmBackend` with a
runner that properly invokes the JVM backend and reports diagnostics
from it. All tests where JVM diagnostic presence/absence is important
were copied/moved there in this and previous commits.
The problem with the code removed in this commit is that it invoked some
parts of the _old JVM backend_ and old light classes, which is very far
from what users see in the production compiler at this point. This led
to real issues where we implemented incorrect behavior in K2 based on
the misleading diagnostic report from the K1 test.
The diagnostic in `triangleWithFlexibleTypeAndSubstitution4.kt` was
removed, but there's a copy of this test in `codegen/box/javaInterop`
which fails for K2 (KT-66529).
The diagnostic in `intersectionWithMappedSignature.kt` was removed and
that is OK because at this point CONFLICTING_JVM_DECLARATIONS there
seems like a bug in the old JVM backend.
In this commit, tests where backend diagnostics were reported correctly
are being moved.
FirScopeDumpHandler was added to FIR diagnostic tests with JVM backend
to support `SCOPE_DUMP` in `overridesBuiltinNoMagic.kt` and
`charAtAndOverload.kt`.
In most affected tests, the backend diagnostic such as "conflicting JVM
signature" or "accidental override" is directly caused by some already
existing error reported by frontend, so it doesn't make sense to check
backend diagnostics there.
Tests where that was not the case were moved/copied to
`testsWithJvmBackend`.
Use the receiver and context receiver types in addition to the property
name as cache keys for the synthetic property generation.
Also, fix logic that searches for accessor overrides by comparing
receiver and context receiver types.
Finally, let synthetic properties delegate their receiverParameter and
contextReceivers to their accessors.
#KT-65464 Fixed
#KT-66195
The following tests are failing with exceptions and will be fixed in the
following commits
j+k/testKjkPropertyAndExtensionProperty.kt
j+k/testKjkImplicitReturnType.kt
#KT-62118 Fixed
To be more precises, ResultTypeResolver for K2 now searches for
similar LOWER/UPPER constraints pair based on the same flexible type,
like LOWER(CapturedType&Any..CapturedType?) and UPPER(CapturedType!).
If such a pair is found, the CapturedType is not approximated.
This is done to avoid a big difference between this case and
completely same constraints, like LOWER(CapturedType!) and
UPPER(CapturedType!). In this case we squash them to EQUAL(CapturedType!)
even before ResultTypeResolver, and captured types which is got from
an EQUAL constraint are not approximated even before this commit.
This commit fixes back a case from KT-50134 and a problem with intellij.vcs.git
#KT-65596 Fixed
This commit changes the behavior of KT-59138 effectively declining it in 2.0.
However, we plan to implement KT-59138 behavior under a feature
flag in 2.0 (see KT-66447), and switch this feature on version 2.x.
Also, this commit implements the LC resolution about postponing
KT-57014 change. We don't have KT-57014 described behavior in 2.0 anymore.
However, we plan to implement a deprecation warning here, see KT-65578.
After this commit, 6 diagnostic tests become incorrectly broken:
- 5 tests from PurelyImplementedCollection group
- a test platformTypes/nullableTypeArgument.kt
This commit also breaks currently fixed-in-k2 KT-50134
(it is fixed again in the following commits),
as well as KT-58933 (it will remain not fixed till we enable KT-59138
behavior again).
#KT-65596 In Progress
#KT-57014 In Progress
#KT-58933 Submitted
Check all members for `Visibility.Unknown`,
otherwise we miss them when they come
from supertypes. This is the reason why
the FP intellij build failed with a
cryptic stacktrace instead of a
human-readable diagnostic.
Also, do report the diagnostic at all
cases of `Visibilities.Unknown`. Turns
out, there are no "simple to reason
about" situations here :(
Also, an interesting detail:
`retrieveDirectOverriddenOf` returns an
empty list for intersection overrides.
But this doesn't seem to break anything...
Replacing `CANNOT_INFER_VISIBILITY`'s
type `KtDeclaration` with
`PsiNameIdentifierOwner` and the related
changes in `PositioningStrategies`
were needed to prevent an exception saying that
`PsiClassImpl` is not a subtype of
`KtDeclaration`.
In some cases we transform flexible type into non-flexible during
enhancement, but don't add `@EnhancedNullability` attribute to them,
which breaks consistency with K1 on IR level
This commit fixes it
^KT-65302
A class can inherit two declarations that are compatible from the
overridability standpoint and are therefore combined to a non-trivial
intersection.
At the same time, the class can declare a member declaration that
only overrides one of the intersection's members.
In this case, we break up the intersection and only add the overridden
parts to the declared member's direct overridden list.
If the class doesn't override the intersection, it exists as
intersection override, like before.
#KT-65487 Fixed
`testIntersectionOfPrimitiveBasedFunctions`
is fine, because we deprecate this
already in ^KT-63243.
`CANNOT_INFER_VISIBILITY` is
positioned as `DECLARATION_NAME`,
just in case we decide for
some reason that we do want to
report it along with
`MANY_*_NOT_IMPLEMENTED`. In that
case, we'd get a problem that
their bounds overlap, but not
completely contain one another.
^KT-63741 Fixed
^KT-59400 Fixed
Even though SO may not be correct
overrides sometimes, it feels more
natural to treat fake overrides as...
well, "overrides". And without it
we'd need to make the code in
`FirOverrideChecker` less intuitive.
Partially reverts 24367e0ad8
Constructors have their own list of hidden/visible.
We now require the constructor to be in VISIBLE_CONSTRUCTOR_SIGNATURES,
everything else is hidden.
This makes it unnecessary to check HIDDEN_CONSTRUCTOR_SIGNATURES
#KT-65821 Fixed
This diagnostic is reported on an explicitly-declared function which
overrides a regular Java function with the same signature as a hidden
one from the same scope.
#KT-64846 Fixed
In this commit we started to create and process a hidden copy
for a built-in functions, which value parameters are erased in Java,
in case we have an accidental Java override which value parameters
are not erased.
In this situation attempt to override such a Java override in Kotlin
again will lead to inaccessible functions
(see changes in containsAndOverload.fir.kt)
#KT-64846 In Progress
This fixes a bunch of missing overridden symbols in IR.
This is also required for fixing KT-59921 in the following commit
where we need to keep all overridden symbols of intersection overrides
so that we can enhance them properly.
#KT-57300 Fixed
#KT-57299 Fixed
#KT-59921
#KT-57300
#KT-62788
#KT-64271
#KT-64382
See callingOuterGenericClassConstructorWithSelfTypes.kt
Previously, for A<B>(""), we used substituted constructor
where `X` was substituted with `B` (or `A<X>.B`).
But when resolving the call for constructor, we use `X`
as a type variable of the call, thus in some positions
we used `X` as TV (Xv in the comments) and somewhere `X` as a type
parameter, thus leading to contradictions (see clarifying comment).
The idea of the fix is simply repeating of the regular (not delegated)
constructor call resolution:
- We substitute only type parameters of outer class
- All the declared parameters of the callee are being checked
through regular resolution & inference mechanisms.
NB: Diagnostic only being reported on arguments because there
when we add `String <: Any` constraint it fails due to existing
contradiction in the CS.
Without the argument/parameter the error is just being lost, but that's
a different story (seeKT-65224).
^KT-64841 Fixed
In more details, we use either platform override checker (if we came
from platform) or the combined intersection scope override checker
at this place. Also this commit fixes various places around
JavaOverrideChecker, allowing to apply it in intersection override
checker properly:
- don't consider return types in this place
- apply JavaOverrideChecker if at least one candidate is from Java
- compare type primitivity closer to K1 logic
#KT-62554 Fixed
Partially fixes KT-63242
Java resolving subsystem requires calculated visibility for correct disambiguation of supertypes.
But visibility remains `Unknown` for Kotlin class-like declarations during supertypes resolving because `STATUS` resolve phase is performed after `SUPER_TYPES` phase.
To fix the problem, the visibility should be initialized to public at the FIR building phase if no modifier is presented.
^KT-64127 Fixed
Kirill Rakhman