Fix for KT-9711: Exception in thread "main" java.lang.NoSuchFieldError: INSTANCE

#KT-9711 Fixed

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

@@ -2025,10 +2025,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
                 return StackValue.singleton(classDescriptor, typeMapper);
             }
             if (isEnumEntry(classDescriptor)) {
-                DeclarationDescriptor enumClass = classDescriptor.getContainingDeclaration();
-                assert DescriptorUtils.isEnumClass(enumClass) : "Enum entry should be declared in enum class: " + descriptor;
-                Type type = typeMapper.mapType((ClassDescriptor) enumClass);
-                return StackValue.field(type, type, descriptor.getName().asString(), true, StackValue.none(), classDescriptor);
+                return StackValue.enumEntry(classDescriptor, typeMapper);
             }
             ClassDescriptor companionObjectDescriptor = classDescriptor.getCompanionObjectDescriptor();
             if (companionObjectDescriptor != null) {
@@ -2568,7 +2565,7 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
                 }
             }
             else {
-                return StackValue.thisOrOuter(this, receiverDescriptor, false, false);
+                return StackValue.thisOrOuter(this, receiverDescriptor, false, isEnumEntry(receiverDescriptor));
             }
         }
         else if (receiverValue instanceof ScriptReceiver) {
@@ -2638,6 +2635,9 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
                 !AnnotationUtilKt.isPlatformStaticInObjectOrClass(context.getContextDescriptor())) {
                 return StackValue.local(0, typeMapper.mapType(calleeContainingClass));
             }
+            else if (isEnumEntry(calleeContainingClass)) {
+                return StackValue.enumEntry(calleeContainingClass, typeMapper);
+            }
             else {
                 return StackValue.singleton(calleeContainingClass, typeMapper);
             }

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

@@ -38,7 +38,7 @@ public class FieldInfo {
 
     @NotNull
     public static FieldInfo createForSingleton(@NotNull ClassDescriptor classDescriptor, @NotNull JetTypeMapper typeMapper, boolean oldSingleton) {
-        if (!classDescriptor.getKind().isSingleton()) {
+        if (!classDescriptor.getKind().isSingleton() || DescriptorUtils.isEnumEntry(classDescriptor)) {
             throw new UnsupportedOperationException("Can't create singleton field for class: " + classDescriptor);
         }
 

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

@@ -31,6 +31,7 @@ import org.jetbrains.kotlin.descriptors.*;
 import org.jetbrains.kotlin.load.java.JvmAbi;
 import org.jetbrains.kotlin.load.java.descriptors.JavaPropertyDescriptor;
 import org.jetbrains.kotlin.psi.KtExpression;
+import org.jetbrains.kotlin.resolve.DescriptorUtils;
 import org.jetbrains.kotlin.resolve.ImportedFromObjectCallableDescriptor;
 import org.jetbrains.kotlin.resolve.annotations.AnnotationUtilKt;
 import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
@@ -575,7 +576,16 @@ public abstract class StackValue {
         return receiverWithParameter;
     }
 
-    public static Field singleton(ClassDescriptor classDescriptor, JetTypeMapper typeMapper) {
+    @NotNull
+    public static Field enumEntry(@NotNull ClassDescriptor descriptor, @NotNull JetTypeMapper typeMapper) {
+        DeclarationDescriptor enumClass = descriptor.getContainingDeclaration();
+        assert DescriptorUtils.isEnumClass(enumClass) : "Enum entry should be declared in enum class: " + descriptor;
+        Type type = typeMapper.mapType((ClassDescriptor) enumClass);
+        return field(type, type, descriptor.getName().asString(), true, none(), descriptor);
+    }
+
+    @NotNull
+    public static Field singleton(@NotNull ClassDescriptor classDescriptor, @NotNull JetTypeMapper typeMapper) {
         return field(FieldInfo.createForSingleton(classDescriptor, typeMapper));
     }
 

compiler/testData/codegen/box/enum/kt9711.kt

@@ -0,0 +1,13 @@
+enum class X {
+
+    B {
+        val value2 = "OK"
+        override val value = { value2 }
+    };
+
+    abstract val value: () -> String
+}
+
+fun box(): String {
+    return X.B.value()
+}

compiler/testData/codegen/box/enum/kt9711_2.kt

@@ -0,0 +1,18 @@
+enum class IssueState {
+
+    FIXED {
+        override fun ToString() = D().k
+
+        fun s()  = "OK"
+
+        class D {
+            val k = s()
+        }
+    };
+
+    open fun ToString() : String = "fail"
+}
+
+fun box(): String {
+    return IssueState.FIXED.ToString()
+}

compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxCodegenTestGenerated.java

@@ -3496,6 +3496,18 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             doTest(fileName);
         }
 
+        @TestMetadata("kt9711.kt")
+        public void testKt9711() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/box/enum/kt9711.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("kt9711_2.kt")
+        public void testKt9711_2() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/box/enum/kt9711_2.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("name.kt")
         public void testName() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/box/enum/name.kt");