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

#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
@@ -17058,6 +17058,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
runTest("compiler/testData/diagnostics/tests/inference/underscoredTypeInForbiddenPositions.kt");
}
@Test
@TestMetadata("UnitUpperboundLambdaReturnType.kt")
public void testUnitUpperboundLambdaReturnType() throws Exception {
runTest("compiler/testData/diagnostics/tests/inference/UnitUpperboundLambdaReturnType.kt");
}
@Test
@TestMetadata("unsoundness1.kt")
public void testUnsoundness1() throws Exception {
@@ -17058,6 +17058,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
runTest("compiler/testData/diagnostics/tests/inference/underscoredTypeInForbiddenPositions.kt");
}
@Test
@TestMetadata("UnitUpperboundLambdaReturnType.kt")
public void testUnitUpperboundLambdaReturnType() throws Exception {
runTest("compiler/testData/diagnostics/tests/inference/UnitUpperboundLambdaReturnType.kt");
}
@Test
@TestMetadata("unsoundness1.kt")
public void testUnsoundness1() throws Exception {
@@ -17052,6 +17052,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
runTest("compiler/testData/diagnostics/tests/inference/underscoredTypeInForbiddenPositions.kt");
}
@Test
@TestMetadata("UnitUpperboundLambdaReturnType.kt")
public void testUnitUpperboundLambdaReturnType() throws Exception {
runTest("compiler/testData/diagnostics/tests/inference/UnitUpperboundLambdaReturnType.kt");
}
@Test
@TestMetadata("unsoundness1.kt")
public void testUnsoundness1() throws Exception {
@@ -17058,6 +17058,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
runTest("compiler/testData/diagnostics/tests/inference/underscoredTypeInForbiddenPositions.kt");
}
@Test
@TestMetadata("UnitUpperboundLambdaReturnType.kt")
public void testUnitUpperboundLambdaReturnType() throws Exception {
runTest("compiler/testData/diagnostics/tests/inference/UnitUpperboundLambdaReturnType.kt");
}
@Test
@TestMetadata("unsoundness1.kt")
public void testUnsoundness1() throws Exception {
@@ -201,10 +201,10 @@ class PostponedArgumentsAnalyzer(
}
}
if (!hasExpressionInReturnArguments && !lambdaExpectedTypeIsUnit) {
if (!hasExpressionInReturnArguments) {
builder.addSubtypeConstraint(
components.session.builtinTypes.unitType.type,
returnTypeRef.type,
substitute(lambda.returnType),
ConeLambdaArgumentConstraintPosition(lambda.atom)
)
}
@@ -0,0 +1,10 @@
// FIR_IDENTICAL
// DIAGNOSTICS: -FINAL_UPPER_BOUND
fun <U : Unit> fork(task: () -> U) {}
fun test() {
fork {}
fork { Unit }
fork { 42 }
}
@@ -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) {})<!>)
@@ -19,7 +19,7 @@ fun main() {
val x1: suspend (Int) -> Unit = takeSuspend(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>id { it }<!>, <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>{ x -> x }<!>)
// Here, the error should be
val x2: (Int) -> Unit = <!INITIALIZER_TYPE_MISMATCH!>takeSuspend(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>id <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ it }<!><!>, <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>{ x -> x }<!>)<!>
val x3: suspend (Int) -> Unit = takeSimpleFunction(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>id <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ it }<!><!>, <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>{ x -> x }<!>)
val x2: (Int) -> Unit = <!INITIALIZER_TYPE_MISMATCH!>takeSuspend(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>id <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ it }<!><!>, <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>{ x -> x }<!>)<!>
val x3: suspend (Int) -> Unit = takeSimpleFunction(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>id <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH!>{ it }<!><!>, <!ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, ARGUMENT_TYPE_MISMATCH, DEBUG_INFO_EXPRESSION_TYPE("kotlin.coroutines.SuspendFunction1<kotlin.Int, kotlin.Unit>")!>{ x -> x }<!>)
val x4: (Int) -> Unit = takeSimpleFunction(<!ARGUMENT_TYPE_MISMATCH!>id<suspend (Int) -> Unit> {}<!>, <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Function1<kotlin.Int, kotlin.Unit>")!>{}<!>)
}
@@ -17058,6 +17058,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
runTest("compiler/testData/diagnostics/tests/inference/underscoredTypeInForbiddenPositions.kt");
}
@Test
@TestMetadata("UnitUpperboundLambdaReturnType.kt")
public void testUnitUpperboundLambdaReturnType() throws Exception {
runTest("compiler/testData/diagnostics/tests/inference/UnitUpperboundLambdaReturnType.kt");
}
@Test
@TestMetadata("unsoundness1.kt")
public void testUnsoundness1() throws Exception {