Record inner class info for interface and DefaultImpls

compiler/testData/asJava/lightClasses/nullabilityAnnotations/Generic.java

@@ -9,4 +9,8 @@ public interface Generic <N, NN> {
 
     @org.jetbrains.annotations.Nullable
     NN b1(@org.jetbrains.annotations.Nullable NN nn);
-}
+
+    @kotlin.jvm.internal.KotlinSyntheticClass(version = {0, 27, 0}, abiVersion = 27, kind = kotlin.jvm.internal.KotlinSyntheticClass.Kind.TRAIT_IMPL)
+    static final class DefaultImpls {
+    }
+}

compiler/testData/asJava/lightClasses/nullabilityAnnotations/Primitives.java

@@ -40,4 +40,8 @@ public interface Primitives {
     float getFloat();
 
     double getDouble();
-}
+
+    @kotlin.jvm.internal.KotlinSyntheticClass(version = {0, 27, 0}, abiVersion = 27, kind = kotlin.jvm.internal.KotlinSyntheticClass.Kind.TRAIT_IMPL)
+    static final class DefaultImpls {
+    }
+}

compiler/testData/asJava/lightClasses/nullabilityAnnotations/PrivateInTrait.java

@@ -1,2 +1,12 @@
 public interface PrivateInTrait {
-}
+    @kotlin.jvm.internal.KotlinSyntheticClass(version = {0, 27, 0}, abiVersion = 27, kind = kotlin.jvm.internal.KotlinSyntheticClass.Kind.TRAIT_IMPL)
+    static final class DefaultImpls {
+        @org.jetbrains.annotations.NotNull
+        static java.lang.String getNn(PrivateInTrait $this) { /* compiled code */ }
+
+        static void setNn(@org.jetbrains.annotations.NotNull PrivateInTrait $this, java.lang.String value) { /* compiled code */ }
+
+        @org.jetbrains.annotations.Nullable
+        static java.lang.String getN(PrivateInTrait $this) { /* compiled code */ }
+    }
+}

compiler/testData/asJava/lightClasses/nullabilityAnnotations/Trait.java

@@ -34,4 +34,8 @@ public interface Trait {
     java.lang.String getNotNullVar();
 
     void setNotNullVar(@org.jetbrains.annotations.NotNull java.lang.String p);
-}
+
+    @kotlin.jvm.internal.KotlinSyntheticClass(version = {0, 27, 0}, abiVersion = 27, kind = kotlin.jvm.internal.KotlinSyntheticClass.Kind.TRAIT_IMPL)
+    static final class DefaultImpls {
+    }
+}

compiler/testData/asJava/lightClasses/nullabilityAnnotations/TraitClassObjectField.java

@@ -15,4 +15,8 @@ public interface TraitClassObjectField {
 
         private Companion() { /* compiled code */ }
     }
+
+    @kotlin.jvm.internal.KotlinSyntheticClass(version = {0, 27, 0}, abiVersion = 27, kind = kotlin.jvm.internal.KotlinSyntheticClass.Kind.TRAIT_IMPL)
+    static final class DefaultImpls {
+    }
 }

compiler/testData/codegen/boxWithJava/interfaceDefaultImpls/B.java

@@ -0,0 +1,5 @@
+class B {
+    static String test(A x) {
+        return A.DefaultImpls.foo(x);
+    }
+}

compiler/testData/codegen/boxWithJava/interfaceDefaultImpls/main.kt

@@ -0,0 +1,10 @@
+interface A {
+    fun foo() = "OK"
+}
+
+fun box(): String {
+    val result = B.test(object : A {})
+    if (result != "OK") return "fail: $result"
+
+    return "OK"
+}

compiler/testData/codegen/bytecodeText/interfaceDefaultImpl.kt

@@ -0,0 +1,11 @@
+interface A {
+    fun foo() = 1
+
+    object C {
+
+    }
+
+    companion object {}
+}
+
+// 2 public final static INNERCLASS A\$DefaultImpls A DefaultImpls

compiler/testData/compileJavaAgainstKotlin/method/TraitImpl.java

@@ -4,8 +4,8 @@ import java.util.ArrayList;
 
 abstract class TraitImpl implements Trait {
     {
-        Trait$DefaultImpls.simple(this);
+        Trait.DefaultImpls.simple(this);
 
-        Trait$DefaultImpls.generic(this, new ArrayList<String>());
+        Trait.DefaultImpls.generic(this, new ArrayList<String>());
     }
 }