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[FIR] Add proper constraint if Unit upper bound leads to Unit lambda return type

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#KT-63524 Fixed
This commit is contained in:
Kirill Rakhman
2023-12-11 10:13:39 +01:00
committed by Space Team
parent ce4eecebf4
commit 8a863e00ba
9 changed files with 46 additions and 6 deletions
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compiler/testData/diagnostics/tests/inference/UnitUpperboundLambdaReturnType.kt
Vendored
+10
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@@ -0,0 +1,10 @@
// FIR_IDENTICAL
// DIAGNOSTICS: -FINAL_UPPER_BOUND
fun <U : Unit> fork(task: () -> U) {}
fun test() {
fork {}
fork { Unit }
fork { 42 }
}
compiler/testData/diagnostics/tests/inference/completion/postponedArgumentsAnalysis/basic.fir.kt
Vendored
+2 -2
View File
@@ -138,8 +138,8 @@ fun main() {
* K <: (C) -> Unit -> TypeVariable(_RP1) >: C
* K == (B) -> Unit -> TypeVariable(_RP1) == B
*/
val x17: (C) -> Unit = <!INITIALIZER_TYPE_MISMATCH, TYPE_MISMATCH!>selectB(id <!ARGUMENT_TYPE_MISMATCH!>{ <!DEBUG_INFO_EXPRESSION_TYPE("B")!>it<!> }<!>, id <!ARGUMENT_TYPE_MISMATCH!>{ it }<!>, id<(B) -> Unit> { x -> x })<!>
val x18: (C) -> Unit = <!TYPE_MISMATCH!>select(id <!ARGUMENT_TYPE_MISMATCH!>{ <!DEBUG_INFO_EXPRESSION_TYPE("C")!>it<!> }<!>, <!ARGUMENT_TYPE_MISMATCH!>{ <!DEBUG_INFO_EXPRESSION_TYPE("C")!>it<!> }<!>, id<(B) -> Unit> { x -> x })<!>
val x17: (C) -> Unit = <!INITIALIZER_TYPE_MISMATCH, TYPE_MISMATCH!>selectB(id <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ <!DEBUG_INFO_EXPRESSION_TYPE("B")!>it<!> }<!>, id <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ it }<!>, id<(B) -> Unit> { x -> x })<!>
val x18: (C) -> Unit = <!TYPE_MISMATCH!>select(id <!ARGUMENT_TYPE_MISMATCH!>{ <!DEBUG_INFO_EXPRESSION_TYPE("C")!>it<!> }<!>, <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ <!DEBUG_INFO_EXPRESSION_TYPE("C")!>it<!> }<!>, id<(B) -> Unit> { x -> x })<!>
// Resolution of extension/non-extension functions combination
val x19: String.() -> Unit = select(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Function1<kotlin.String, kotlin.Unit>")!>id { <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.String")!>this<!> }<!>, <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Function1<kotlin.String, kotlin.Unit>")!>id(fun(x: String) {})<!>)