[FIR] Fix false positive TYPE_VARIANCE_CONFLICT in nested class ^KT-49078 Fixed

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

@@ -11544,6 +11544,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                     runTest("compiler/testData/diagnostics/tests/generics/innerClasses/kt6325.kt");
                 }
 
+                @Test
+                @TestMetadata("noTypeVarianceConflictInNestedClass.kt")
+                public void testNoTypeVarianceConflictInNestedClass() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceConflictInNestedClass.kt");
+                }
+
                 @Test
                 @TestMetadata("outerArgumentsRequired.kt")
                 public void testOuterArgumentsRequired() throws Exception {

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

@@ -11544,6 +11544,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                     runTest("compiler/testData/diagnostics/tests/generics/innerClasses/kt6325.kt");
                 }
 
+                @Test
+                @TestMetadata("noTypeVarianceConflictInNestedClass.kt")
+                public void testNoTypeVarianceConflictInNestedClass() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceConflictInNestedClass.kt");
+                }
+
                 @Test
                 @TestMetadata("outerArgumentsRequired.kt")
                 public void testOuterArgumentsRequired() throws Exception {

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

@@ -11544,6 +11544,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                     runTest("compiler/testData/diagnostics/tests/generics/innerClasses/kt6325.kt");
                 }
 
+                @Test
+                @TestMetadata("noTypeVarianceConflictInNestedClass.kt")
+                public void testNoTypeVarianceConflictInNestedClass() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceConflictInNestedClass.kt");
+                }
+
                 @Test
                 @TestMetadata("outerArgumentsRequired.kt")
                 public void testOuterArgumentsRequired() throws Exception {

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirClassVarianceChecker.kt

@@ -36,7 +36,7 @@ object FirClassVarianceChecker : FirClassChecker() {
                 }
             }
 
-            if (member is FirTypeParameterRefsOwner) {
+            if (member is FirTypeParameterRefsOwner && member !is FirClass) {
                 checkTypeParameters(member.typeParameters, Variance.IN_VARIANCE, context, reporter)
             }
 

compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceConflictInNestedClass.kt

@@ -0,0 +1,7 @@
+// FIR_IDENTICAL
+// KT-49078
+
+class CidrMemoryData<T> {
+    interface Data<out T>
+    abstract class AbstractData<out T, E : Data<T>>
+}

compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceConflictInNestedClass.txt

@@ -0,0 +1,21 @@
+package
+
+public final class CidrMemoryData</*0*/ T> {
+    public constructor CidrMemoryData</*0*/ T>()
+    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 abstract class AbstractData</*0*/ out T, /*1*/ E : CidrMemoryData.Data<T>> {
+        public constructor AbstractData</*0*/ out T, /*1*/ E : CidrMemoryData.Data<T>>()
+        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 interface Data</*0*/ out T> {
+        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
+    }
+}

compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceInNestedClass.txt

@@ -0,0 +1,21 @@
+package
+
+public final class CidrMemoryData</*0*/ T> {
+    public constructor CidrMemoryData</*0*/ T>()
+    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 abstract class AbstractData</*0*/ out T, /*1*/ E : CidrMemoryData.Data<T>> {
+        public constructor AbstractData</*0*/ out T, /*1*/ E : CidrMemoryData.Data<T>>()
+        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 interface Data</*0*/ out T> {
+        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
+    }
+}

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

@@ -11550,6 +11550,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                     runTest("compiler/testData/diagnostics/tests/generics/innerClasses/kt6325.kt");
                 }
 
+                @Test
+                @TestMetadata("noTypeVarianceConflictInNestedClass.kt")
+                public void testNoTypeVarianceConflictInNestedClass() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/generics/innerClasses/noTypeVarianceConflictInNestedClass.kt");
+                }
+
                 @Test
                 @TestMetadata("outerArgumentsRequired.kt")
                 public void testOuterArgumentsRequired() throws Exception {