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K2: consider backing fields of vars as smartcast unstable

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#KT-61974 Fixed
This commit is contained in:
Mikhail Glukhikh
2023-09-28 11:42:53 +02:00
committed by Space Team
parent 8e577e101e
commit 8bd792792f
3 changed files with 6 additions and 7 deletions
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compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/dfa/VariableStorageImpl.kt
+2 -3
View File
@@ -161,9 +161,8 @@ class VariableStorageImpl(private val session: FirSession) : VariableStorage() {
if (originalFir is FirThisReceiverExpression) return PropertyStability.STABLE_VALUE
when (this) {
is FirAnonymousObjectSymbol -> return null
is FirFunctionSymbol<*>,
is FirClassSymbol<*>,
is FirBackingFieldSymbol -> return PropertyStability.STABLE_VALUE
is FirFunctionSymbol<*>, is FirClassSymbol<*> -> return PropertyStability.STABLE_VALUE
is FirBackingFieldSymbol -> return if (isVal) PropertyStability.STABLE_VALUE else PropertyStability.MUTABLE_PROPERTY
}
if (this !is FirVariableSymbol<*>) return null
if (this is FirFieldSymbol && !this.isFinal) return PropertyStability.MUTABLE_PROPERTY
compiler/testData/ir/irText/firProblems/elvisOnBackingFieldInGetter.fir.ir.txt
Vendored
+3 -3
View File
@@ -39,18 +39,18 @@ FILE fqName:<root> fileName:/elvisOnBackingFieldInGetter.kt
value: CONSTRUCTOR_CALL 'public constructor <init> () declared in <root>.ResourceTable' type=<root>.ResourceTable origin=null
RETURN type=kotlin.Nothing from='public final fun <get-resourceTable> (): <root>.ResourceTable? declared in <root>.Test'
BLOCK type=<root>.ResourceTable origin=ELVIS
VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:kotlin.Nothing? [val]
VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.ResourceTable? [val]
GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:resourceTable type:<root>.ResourceTable? visibility:private' type=<root>.ResourceTable? origin=GET_PROPERTY
receiver: GET_VAR '<this>: <root>.Test declared in <root>.Test.<get-resourceTable>' type=<root>.Test origin=null
WHEN type=<root>.ResourceTable origin=null
BRANCH
if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
arg0: GET_VAR 'val tmp_0: kotlin.Nothing? declared in <root>.Test.<get-resourceTable>' type=kotlin.Nothing? origin=null
arg0: GET_VAR 'val tmp_0: <root>.ResourceTable? declared in <root>.Test.<get-resourceTable>' type=<root>.ResourceTable? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CONSTRUCTOR_CALL 'public constructor <init> () declared in <root>.ResourceTable' type=<root>.ResourceTable origin=null
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val tmp_0: kotlin.Nothing? declared in <root>.Test.<get-resourceTable>' type=kotlin.Nothing? origin=null
then: GET_VAR 'val tmp_0: <root>.ResourceTable? declared in <root>.Test.<get-resourceTable>' type=<root>.ResourceTable? origin=null
FUN DEFAULT_PROPERTY_ACCESSOR name:<set-resourceTable> visibility:public modality:FINAL <> ($this:<root>.Test, <set-?>:<root>.ResourceTable?) returnType:kotlin.Unit
correspondingProperty: PROPERTY name:resourceTable visibility:public modality:FINAL [var]
$this: VALUE_PARAMETER name:<this> type:<root>.Test
compiler/testData/ir/irText/firProblems/elvisOnBackingFieldInGetter.fir.kt.txt
Vendored
+1 -1
View File
@@ -20,7 +20,7 @@ class Test {
}
}
return { // BLOCK
val <elvis>: Nothing? = <this>.#resourceTable
val <elvis>: ResourceTable? = <this>.#resourceTable
when {
EQEQ(arg0 = <elvis>, arg1 = null) -> ResourceTable()
else -> <elvis>