[FIR] Add testcases to throw class with unresolved parent.

^KT-60048 Fixed

compiler/fir/checkers/checkers.native/src/org/jetbrains/kotlin/fir/analysis/native/checkers/FirNativeThrowsChecker.kt

@@ -9,7 +9,6 @@ import org.jetbrains.kotlin.builtins.StandardNames
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.diagnostics.reportOn
 import org.jetbrains.kotlin.fir.*
-import org.jetbrains.kotlin.fir.analysis.checkers.ConeTypeCompatibilityChecker.getSuperTypes
 import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
 import org.jetbrains.kotlin.fir.analysis.checkers.declaration.FirBasicDeclarationChecker
 import org.jetbrains.kotlin.fir.analysis.checkers.hasModifier
@@ -22,6 +21,7 @@ import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.toFirRegularClassSymbol
 import org.jetbrains.kotlin.fir.scopes.getDirectOverriddenFunctions
 import org.jetbrains.kotlin.fir.symbols.impl.FirNamedFunctionSymbol
+import org.jetbrains.kotlin.fir.symbols.impl.FirTypeAliasSymbol
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.name.ClassId
@@ -160,8 +160,13 @@ object FirNativeThrowsChecker : FirBasicDeclarationChecker() {
             }
         }
 
-        if (this is FirResolvedQualifier && symbol?.getSuperTypes()?.any { it.hasError() } == true) {
-            return true
+        if (this is FirResolvedQualifier) {
+            symbol?.let { symbol ->
+                if (symbol is FirTypeAliasSymbol && symbol.resolvedExpandedTypeRef.coneTypeSafe<ConeKotlinType>()?.hasError() == true) {
+                    return true
+                }
+                // TODO: accept also FirClassSymbol<*>, like `FirClassLikeSymbol<*>.getSuperTypes()` does. Write test for this use-case.
+            }
         }
         return false
     }

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/ConeTypeCompatibilityChecker.kt

@@ -355,7 +355,7 @@ object ConeTypeCompatibilityChecker {
         }
     }
 
-    fun FirClassLikeSymbol<*>.getSuperTypes(): List<ConeClassLikeType> {
+    private fun FirClassLikeSymbol<*>.getSuperTypes(): List<ConeClassLikeType> {
         return when (this) {
             is FirTypeAliasSymbol -> listOfNotNull(resolvedExpandedTypeRef.coneTypeSafe())
             is FirClassSymbol<*> -> resolvedSuperTypeRefs.mapNotNull { it.coneTypeSafe() }

compiler/testData/diagnostics/nativeTests/throws.fir.kt

@@ -40,6 +40,10 @@ fun throwsEmptyParens() {}
 @Throws(<!ANNOTATION_ARGUMENT_MUST_BE_CONST!><!UNRESOLVED_REFERENCE!>UnresolvedException<!>::class<!>)
 fun throwsUnresolved() {}
 
+class Orphan : <!UNRESOLVED_REFERENCE!>MyUnresolvedParent<!>
+@Throws(<!ARGUMENT_TYPE_MISMATCH!>Orphan::class<!>)
+fun throwsClassWithUnresolvedParent() {}
+
 @Throws(exceptionClasses = <!ANNOTATION_ARGUMENT_MUST_BE_CONST, ARGUMENT_TYPE_MISMATCH, ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_ANNOTATION_ERROR!><!UNRESOLVED_REFERENCE!>UnresolvedException<!>::class<!>)
 fun throwsNamedUnresolved() {}
 
@@ -312,6 +316,9 @@ suspend fun suspendThrowsSpreadArrayOfUnresolved() {}
 @Throws(UEAlias::class)
 suspend fun suspendThrowsTypealiasToUnresolved() {}
 
+@Throws(<!ARGUMENT_TYPE_MISMATCH!>Orphan::class<!>)
+suspend fun suspendThrowsClassWithUnresolvedParent() {}
+
 @Throws(Exception1::class, CancellationException::class)
 suspend fun suspendThrowsCancellationException1() {}
 

compiler/testData/diagnostics/nativeTests/throws.kt

@@ -40,6 +40,10 @@ fun throwsEmptyParens() {}
 @Throws(<!ANNOTATION_ARGUMENT_MUST_BE_CONST!><!UNRESOLVED_REFERENCE!>UnresolvedException<!>::class<!>)
 fun throwsUnresolved() {}
 
+class Orphan : <!UNRESOLVED_REFERENCE!>MyUnresolvedParent<!>
+@Throws(<!TYPE_MISMATCH!>Orphan::class<!>)
+fun throwsClassWithUnresolvedParent() {}
+
 @Throws(exceptionClasses = <!ANNOTATION_ARGUMENT_MUST_BE_CONST, ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_ANNOTATION_ERROR!><!UNRESOLVED_REFERENCE!>UnresolvedException<!>::class<!>)
 fun throwsNamedUnresolved() {}
 
@@ -312,6 +316,9 @@ suspend fun suspendThrowsSpreadArrayOfUnresolved() {}
 @Throws(<!ANNOTATION_ARGUMENT_MUST_BE_CONST!>UEAlias::class<!>)
 suspend fun suspendThrowsTypealiasToUnresolved() {}
 
+<!MISSING_EXCEPTION_IN_THROWS_ON_SUSPEND!>@Throws(<!TYPE_MISMATCH!>Orphan::class<!>)<!>
+suspend fun suspendThrowsClassWithUnresolvedParent() {}
+
 @Throws(Exception1::class, CancellationException::class)
 suspend fun suspendThrowsCancellationException1() {}
 

compiler/testData/diagnostics/nativeTests/throws.txt

@@ -6,6 +6,7 @@ package
 @kotlin.Throws(exceptionClasses = {Exception1::class, kotlin.coroutines.cancellation.CancellationException::class}) public suspend fun suspendThrowsCancellationException1(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {kotlin.coroutines.cancellation.CancellationException::class, Exception1::class}) public suspend fun suspendThrowsCancellationException2(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {kotlin.coroutines.cancellation.CancellationException::class}) public suspend fun suspendThrowsCancellationExceptionTypealias(): kotlin.Unit
+@kotlin.Throws(exceptionClasses = {Orphan::class}) public suspend fun suspendThrowsClassWithUnresolvedParent(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {kotlin.Exception::class}) public suspend fun suspendThrowsException1(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {Exception1::class, kotlin.Exception::class}) public suspend fun suspendThrowsException2(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {kotlin.Exception::class}) public suspend fun suspendThrowsExceptionTypealias(): kotlin.Unit
@@ -31,6 +32,7 @@ package
 @kotlin.Throws(exceptionClasses = {kotlin.Throwable::class}) public suspend fun suspendThrowsThrowableTypealias(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {}) public suspend fun suspendThrowsTypealiasToUnresolved(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {}) public suspend fun suspendThrowsUnresolved(): kotlin.Unit
+@kotlin.Throws(exceptionClasses = {Orphan::class}) public fun throwsClassWithUnresolvedParent(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {}) public fun throwsEmptyParens(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {}) public fun throwsNamedArrayOfUnresolved(): kotlin.Unit
 @kotlin.Throws(exceptionClasses = {}) public fun throwsNamedEmptyArrayOf(): kotlin.Unit
@@ -245,6 +247,13 @@ public final class InheritsThrowsAndNoThrows : Base0, Base1 {
     public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
+public final class Orphan {
+    public constructor Orphan()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
 public final class OverrideDifferentThrows4 : OverridesDifferentThrows3 {
     public constructor OverrideDifferentThrows4()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean