It would allow ConeKotlinType.scope return FirTypeScope
and thus pulling down org.jetbrains.kotlin.fir.scopes.FirScope#processOverriddenFunctions
(See the following commits)
For single super type constructor create star projection argument when types for that argument are equal to the original types.
Captured star projections are replaced with their corresponding supertypes during this check.
Skip check for `in` parameters, for which recursive cst calculation does not happen.
Adjust constant in fallback recursion condition.
^KT-38544 Fixed
Recursive type with several recursive anscestors can create a number of identical
common supertype calculations, growing exponentially on every step of recursion.
Previously the number of calculations was limited by D + 3, where D is a type depth.
Since the limit is dynamic, it seems that extra +3 offset can be dropped thus
reducing the number of recursions. The proper solution is to detect such a recursion
and fold recursive type preemtively, but for now this may improve performance in some use cases.
^KT-38544 In progress
#KT-36247 fixed
A lot of testdata changed because significanly less (error) descriptors
are created for unresolved types, so diagnostics became different.
New resolution applicability is needed in cases when error is found,
but candidate still should be selected. Currently there are two cases,
when this behaviour is required:
- unstable smartcast (choose candidate with non-nullable parameter)
- unknown lambda parameter type (against non-functional expected type)
KT-36264
There are several issues with unsafe desugaring for convention calls.
Proper fix is not implemented here (see design proposal KT-30872).
This commit only applies the old logic in the new inference.
^KT-30695 Fixed
It partially reverts 7898922066
because it's not obvious that it's a safe operation
for invariant/contravariant types.
Also, there's a necessary fix in prepareReceiverRegardingCaptureTypes
to make types order stable
Otherwise test bareTypesWithStarProjections becomes flaky.
Also, the changes in bareTypesWithStarProjections.kt are also expected
because the type of the expression `coneSymbol` after the second "if" is
FirVariableSymbol<*> & FirPropertySymbol & AbstractFirBasedSymbol<*>
thus we fix D in the call `coneSymbol.phasedFir()` to FirVariableSymbol<*>
because it's the first type in the list
(see the next line after the last changed in AbstractTypeChecker)
Treating special functions for `if`, `when`, `try`, `?:` as not accepting `Nothing` result type is incorrect.
Making so leads to cases with uninferred `Nothing` result type for inner calls and lost data flow info.
Nullability constraints should not be chosen when proper
argument constraints for variables in contravariant position present.
^KT-32106 Fixed
^KT-33166 Fixed
MissingDependencyClassChecker.collectDiagnostics now show only unique diagnostics
As per-file analyzer trace used in checker delegates to resolve session trace, diagnostics might be duplicated because of race condition:
1. If a non-checker thread performs analyze first, diagnostics for global elements will be stored in the resolve session trace only once.
2 If the checker threads comes to the analyze first, diagnostics will be stored in the local trace, and after that might be duplicated in the resolve session trace by other analyzers.
#KT-35578 Fixed
The actual problem was introduced in 4f1e85b468, note how `hashCode` is implemented:
```
var currentHashCode = cachedHashCode
if (currentHashCode == 0) return currentHashCode
...
```
It's a silly bug, there should be check `if (currentHashCode != 0) ...` because `0` is used a marker for "uncomputed value".
Now, in the commit 0219b86d06 I added map with `KotlinType` as a key and because of constant `hash` for `KotlinType`, we basically got `List` instead of `Map`, which caused this performance regression
#KT-34063 Fixed
simon.ogorodnik