Fix for KT-14774: Incorrect inner class modifier generated for sealed inner classes

#KT-14774 Fixed

compiler/backend/src/org/jetbrains/kotlin/codegen/AsmUtil.java

@@ -307,10 +307,11 @@ public class AsmUtil {
             case ANNOTATION_CLASS:
                 return ACC_ABSTRACT | ACC_ANNOTATION | ACC_INTERFACE;
             default:
-                if (innerClass.getModality() == Modality.FINAL) {
+                Modality modality = innerClass.getModality();
+                if (modality == Modality.FINAL) {
                     return ACC_FINAL;
                 }
-                else if (innerClass.getModality() == Modality.ABSTRACT) {
+                else if (modality == Modality.ABSTRACT || modality == Modality.SEALED) {
                     return ACC_ABSTRACT;
                 }
         }

compiler/testData/writeFlags/class/accessFlags/innerSealed.kt

@@ -0,0 +1,11 @@
+class Foo {
+    sealed class Bar
+}
+
+// TESTED_OBJECT_KIND: class
+// TESTED_OBJECTS: Foo$Bar
+// FLAGS: ACC_PUBLIC, ACC_ABSTRACT, ACC_SUPER
+
+// TESTED_OBJECT_KIND: innerClass
+// TESTED_OBJECTS: Foo, Bar
+// FLAGS: ACC_PUBLIC, ACC_ABSTRACT, ACC_STATIC

compiler/tests/org/jetbrains/kotlin/codegen/flags/WriteFlagsTestGenerated.java

@@ -100,6 +100,12 @@ public class WriteFlagsTestGenerated extends AbstractWriteFlagsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("innerSealed.kt")
+            public void testInnerSealed() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/writeFlags/class/accessFlags/innerSealed.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("mappingWhen.kt")
             public void testMappingWhen() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/writeFlags/class/accessFlags/mappingWhen.kt");