[FIR] Use proper directOverriddenFunctions fun in FirNativeThrowsChecker

Fix false positive `INCOMPATIBLE_THROWS_OVERRIDE`

^KT-65105 Fixed

Merge-request: KT-MR-14937
Merged-by: Ivan Kochurkin <Ivan.Kochurkin@jetbrains.com>

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

@@ -13,8 +13,8 @@ import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.analysis.checkers.MppCheckerKind
 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.directOverriddenFunctions
 import org.jetbrains.kotlin.fir.analysis.checkers.hasModifier
-import org.jetbrains.kotlin.fir.analysis.checkers.unsubstitutedScope
 import org.jetbrains.kotlin.fir.analysis.diagnostics.native.FirNativeErrors
 import org.jetbrains.kotlin.fir.containingClassLookupTag
 import org.jetbrains.kotlin.fir.declarations.FirDeclaration
@@ -27,7 +27,6 @@ import org.jetbrains.kotlin.fir.isSubstitutionOrIntersectionOverride
 import org.jetbrains.kotlin.fir.references.isError
 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.*
@@ -136,9 +135,7 @@ sealed class FirNativeThrowsChecker(mppKind: MppCheckerKind) : FirBasicDeclarati
             val containingClassSymbol = localFunctionSymbol.containingClassLookupTag()?.toFirRegularClassSymbol(context.session)
 
             if (containingClassSymbol != null) {
-                val unsubstitutedScope = containingClassSymbol.unsubstitutedScope(context)
-                unsubstitutedScope.processFunctionsByName(localFunctionSymbol.name) {}
-                val overriddenFunctions = unsubstitutedScope.getDirectOverriddenFunctions(localFunctionSymbol)
+                val overriddenFunctions = localFunctionSymbol.directOverriddenFunctions(context.session, context.scopeSession)
                 if (localFunctionSymbol == function.symbol || localThrowsAnnotation == null && overriddenFunctions.isNotEmpty()) {
                     for (overriddenFunction in overriddenFunctions) {
                         val annotation = if (overriddenFunction.isSubstitutionOrIntersectionOverride) {

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

@@ -1,3 +1,5 @@
+// ISSUE: KT-65105
+
 // FILE: kotlin.kt
 package kotlin
 
@@ -376,3 +378,13 @@ typealias ThrowableAlias = Throwable
 
 @Throws(ThrowableAlias::class)
 suspend fun suspendThrowsThrowableTypealias() {}
+
+interface Foo<T> {
+    @Throws(IllegalArgumentException::class)
+    public fun f(data: T) {}
+}
+
+class Bar<K> : Foo<K> {
+    @Throws(IllegalArgumentException::class)
+    override fun f(data: K) {}
+}

compiler/testData/diagnostics/nativeTests/throws.kt

@@ -1,3 +1,5 @@
+// ISSUE: KT-65105
+
 // FILE: kotlin.kt
 package kotlin
 
@@ -376,3 +378,13 @@ typealias ThrowableAlias = Throwable
 
 @Throws(ThrowableAlias::class)
 suspend fun suspendThrowsThrowableTypealias() {}
+
+interface Foo<T> {
+    @Throws(IllegalArgumentException::class)
+    public fun f(data: T) {}
+}
+
+class Bar<K> : Foo<K> {
+    @Throws(IllegalArgumentException::class)
+    override fun f(data: K) {}
+}

compiler/testData/diagnostics/nativeTests/throws.txt

@@ -47,6 +47,14 @@ package
 @kotlin.Throws(exceptionClasses = {}) public fun throwsUnresolved(): kotlin.Unit
 public fun withLocalClass(): kotlin.Unit
 
+public final class Bar</*0*/ K> : Foo<K> {
+    public constructor Bar</*0*/ K>()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    @kotlin.Throws(exceptionClasses = {kotlin.IllegalArgumentException::class}) public open override /*1*/ fun f(/*0*/ data: K): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
 public interface Base0 {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public abstract fun foo(): kotlin.Unit
@@ -152,6 +160,13 @@ public final class Exception3 : kotlin.Throwable {
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
+public interface Foo</*0*/ T> {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    @kotlin.Throws(exceptionClasses = {kotlin.IllegalArgumentException::class}) public open fun f(/*0*/ data: T): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
 public final class HasThrowsWithEmptyListOnOverride : Base1 {
     public constructor HasThrowsWithEmptyListOnOverride()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean