FE: add test for KT-53408 to have stable behavior here

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -23106,6 +23106,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                 runTest("compiler/testData/diagnostics/tests/override/kt4785.kt");
             }
 
+            @Test
+            @TestMetadata("kt53408.kt")
+            public void testKt53408() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/override/kt53408.kt");
+            }
+
             @Test
             @TestMetadata("kt6014.kt")
             public void testKt6014() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java

@@ -23106,6 +23106,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                 runTest("compiler/testData/diagnostics/tests/override/kt4785.kt");
             }
 
+            @Test
+            @TestMetadata("kt53408.kt")
+            public void testKt53408() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/override/kt53408.kt");
+            }
+
             @Test
             @TestMetadata("kt6014.kt")
             public void testKt6014() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java

@@ -23106,6 +23106,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                 runTest("compiler/testData/diagnostics/tests/override/kt4785.kt");
             }
 
+            @Test
+            @TestMetadata("kt53408.kt")
+            public void testKt53408() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/override/kt53408.kt");
+            }
+
             @Test
             @TestMetadata("kt6014.kt")
             public void testKt6014() throws Exception {

compiler/testData/diagnostics/tests/override/kt53408.kt

@@ -0,0 +1,18 @@
+// FIR_IDENTICAL
+interface A {
+    fun f() { }
+}
+
+interface B {
+    fun f() { }
+}
+
+abstract class C : A {
+    abstract override fun f()
+}
+
+class D : C(), A, B {
+    override fun f() {
+        super.f() // Resolves to super<B>.f call, but should be error
+    }
+}

compiler/testData/diagnostics/tests/override/kt53408.txt

@@ -0,0 +1,31 @@
+package
+
+public interface A {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun f(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface B {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun f(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public abstract class C : A {
+    public constructor C()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract override /*1*/ fun f(): 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 D : C, A, B {
+    public constructor D()
+    public open override /*3*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*3*/ fun f(): kotlin.Unit
+    public open override /*3*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*3*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -23112,6 +23112,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 runTest("compiler/testData/diagnostics/tests/override/kt4785.kt");
             }
 
+            @Test
+            @TestMetadata("kt53408.kt")
+            public void testKt53408() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/override/kt53408.kt");
+            }
+
             @Test
             @TestMetadata("kt6014.kt")
             public void testKt6014() throws Exception {