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[FIR] Support enhancing intersection overrides

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When a type annotated with @PurelyImplements (explicitly or implicitly)
inherited some methods from a java supertype and the purely implemented
Kotlin supertype, it was inconsistent which of the signatures the
intersection override would have (with or without flexible types).
This commit adds support for the enhancement of intersection overrides.
If one of the overridden methods has non-flexible types, the enhanced
method will have non-flexible types.
This fixes some false negative nullability type mismatches.

#KT-59921 Fixed
This commit is contained in:
Kirill Rakhman
2024-01-17 10:14:44 +01:00
committed by Space Team
parent 3b841dcb98
commit 9ec0210c04
19 changed files with 159 additions and 47 deletions
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compiler/testData/ir/irText/stubs/builtinMap.fir.ir.txt
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@@ -27,7 +27,7 @@ FILE fqName:<root> fileName:/builtinMap.kt
$receiver: VALUE_PARAMETER name:$this$apply type:java.util.LinkedHashMap<@[FlexibleNullability] K1 of <root>.plus?, @[FlexibleNullability] V1 of <root>.plus?>
BLOCK_BODY
TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
CALL 'public open fun put (p0: @[FlexibleNullability] K of java.util.LinkedHashMap?, p1: @[FlexibleNullability] V of java.util.LinkedHashMap?): V of java.util.LinkedHashMap? declared in java.util.LinkedHashMap' type=V1 of <root>.plus? origin=null
CALL 'public open fun put (p0: @[EnhancedNullability] K of java.util.LinkedHashMap, p1: @[EnhancedNullability] V of java.util.LinkedHashMap): V of java.util.LinkedHashMap? declared in java.util.LinkedHashMap' type=V1 of <root>.plus? origin=null
$this: GET_VAR '$this$apply: java.util.LinkedHashMap<@[FlexibleNullability] K1 of <root>.plus?, @[FlexibleNullability] V1 of <root>.plus?> declared in <root>.plus.<anonymous>' type=java.util.LinkedHashMap<@[FlexibleNullability] K1 of <root>.plus?, @[FlexibleNullability] V1 of <root>.plus?> origin=null
p0: CALL 'public final fun <get-first> (): A of kotlin.Pair declared in kotlin.Pair' type=K1 of <root>.plus origin=GET_PROPERTY
$this: GET_VAR 'pair: kotlin.Pair<K1 of <root>.plus, V1 of <root>.plus> declared in <root>.plus' type=kotlin.Pair<K1 of <root>.plus, V1 of <root>.plus> origin=null