diff --git a/compiler/testData/diagnostics/tests/BacktickNames.txt b/compiler/testData/diagnostics/tests/BacktickNames.txt
index 54eb7111d2f..64f5d36ed94 100644
--- a/compiler/testData/diagnostics/tests/BacktickNames.txt
+++ b/compiler/testData/diagnostics/tests/BacktickNames.txt
@@ -61,9 +61,9 @@ public final data class Data {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Data
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final class `class:name` {
diff --git a/compiler/testData/diagnostics/tests/Underscore.txt b/compiler/testData/diagnostics/tests/Underscore.txt
index 135b51a3217..7731308c25c 100644
--- a/compiler/testData/diagnostics/tests/Underscore.txt
+++ b/compiler/testData/diagnostics/tests/Underscore.txt
@@ -12,9 +12,9 @@ public fun doIt(/*0*/ f: (kotlin.Any?) -> kotlin.Any?): kotlin.Any?
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Pair
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final class _</*0*/ ________> {
diff --git a/compiler/testData/diagnostics/tests/annotations/MultiDeclaration.txt b/compiler/testData/diagnostics/tests/annotations/MultiDeclaration.txt
index 636d002c734..5948f4bc82f 100644
--- a/compiler/testData/diagnostics/tests/annotations/MultiDeclaration.txt
+++ b/compiler/testData/diagnostics/tests/annotations/MultiDeclaration.txt
@@ -16,7 +16,7 @@ public final data class Pair {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Pair
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/annotations/forParameterAnnotationResolve.txt b/compiler/testData/diagnostics/tests/annotations/forParameterAnnotationResolve.txt
index ada91290c6f..0d6d3a6c62b 100644
--- a/compiler/testData/diagnostics/tests/annotations/forParameterAnnotationResolve.txt
+++ b/compiler/testData/diagnostics/tests/annotations/forParameterAnnotationResolve.txt
@@ -10,9 +10,9 @@ public final data class A {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final annotation class Ann : kotlin.Annotation {
diff --git a/compiler/testData/diagnostics/tests/annotations/onMultiDeclaration.txt b/compiler/testData/diagnostics/tests/annotations/onMultiDeclaration.txt
index 131183079b8..897fa6c06d0 100644
--- a/compiler/testData/diagnostics/tests/annotations/onMultiDeclaration.txt
+++ b/compiler/testData/diagnostics/tests/annotations/onMultiDeclaration.txt
@@ -9,9 +9,9 @@ public final data class P {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ a: kotlin.Int = ..., /*1*/ b: kotlin.Int = ...): P
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final annotation class ann : kotlin.Annotation {
diff --git a/compiler/testData/diagnostics/tests/annotations/options/multiDeclaration.txt b/compiler/testData/diagnostics/tests/annotations/options/multiDeclaration.txt
index 5be8a82f139..140d711766b 100644
--- a/compiler/testData/diagnostics/tests/annotations/options/multiDeclaration.txt
+++ b/compiler/testData/diagnostics/tests/annotations/options/multiDeclaration.txt
@@ -16,7 +16,7 @@ public final data class Pair {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ a: kotlin.Int = ..., /*1*/ b: kotlin.Int = ...): Pair
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/annotations/options/target.txt b/compiler/testData/diagnostics/tests/annotations/options/target.txt
index 088428331e8..eee6aa4b0d9 100644
--- a/compiler/testData/diagnostics/tests/annotations/options/target.txt
+++ b/compiler/testData/diagnostics/tests/annotations/options/target.txt
@@ -5,9 +5,9 @@ package
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): My
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 @kotlin.annotation.Target(allowedTargets = {AnnotationTarget.CLASS}) public final annotation class base : kotlin.Annotation {
diff --git a/compiler/testData/diagnostics/tests/callableReference/ea81649_errorPropertyLHS.txt b/compiler/testData/diagnostics/tests/callableReference/ea81649_errorPropertyLHS.txt
index 26647d8f03d..718354477af 100644
--- a/compiler/testData/diagnostics/tests/callableReference/ea81649_errorPropertyLHS.txt
+++ b/compiler/testData/diagnostics/tests/callableReference/ea81649_errorPropertyLHS.txt
@@ -15,7 +15,7 @@ public final data class User {
     public final val surname: kotlin.String
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ surname: kotlin.String = ...): User
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/controlFlowAnalysis/kt4126.txt b/compiler/testData/diagnostics/tests/controlFlowAnalysis/kt4126.txt
index 7e7beab89d7..9381c9dd8b5 100644
--- a/compiler/testData/diagnostics/tests/controlFlowAnalysis/kt4126.txt
+++ b/compiler/testData/diagnostics/tests/controlFlowAnalysis/kt4126.txt
@@ -8,7 +8,7 @@ public final data class ProductGroup {
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final operator /*synthesized*/ fun component2(): ProductGroup?
     public final /*synthesized*/ fun copy(/*0*/ short_name: kotlin.String = ..., /*1*/ parent: ProductGroup? = ...): ProductGroup
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/componentNamedComponent1.txt b/compiler/testData/diagnostics/tests/dataClasses/componentNamedComponent1.txt
index 42d6e64c08f..f57376005d0 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/componentNamedComponent1.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/componentNamedComponent1.txt
@@ -7,7 +7,7 @@ public final data class A {
     public final val component1: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ component1: kotlin.Int = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/conflictingCopyOverloads.txt b/compiler/testData/diagnostics/tests/dataClasses/conflictingCopyOverloads.txt
index 773abd4be96..e261abcea66 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/conflictingCopyOverloads.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/conflictingCopyOverloads.txt
@@ -9,7 +9,7 @@ public final data class A {
     public final fun copy(/*0*/ x: kotlin.Int, /*1*/ y: kotlin.String): A
     public final fun copy(/*0*/ x: kotlin.Int, /*1*/ y: kotlin.String): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/conflictingOverloads.txt b/compiler/testData/diagnostics/tests/dataClasses/conflictingOverloads.txt
index c426f360172..d34627dafa1 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/conflictingOverloads.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/conflictingOverloads.txt
@@ -9,7 +9,7 @@ public final data class A {
     public final fun component2(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/copyOfPrivateClass.txt b/compiler/testData/diagnostics/tests/dataClasses/copyOfPrivateClass.txt
index 18ed9e50aa3..6f5103bef5d 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/copyOfPrivateClass.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/copyOfPrivateClass.txt
@@ -11,8 +11,8 @@ public final class Outer {
         public final val c: kotlin.Int
         public final operator /*synthesized*/ fun component1(): kotlin.Int
         public final /*synthesized*/ fun copy(/*0*/ c: kotlin.Int = ...): Outer.Nested
-        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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
     }
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/dataClassNoName.txt b/compiler/testData/diagnostics/tests/dataClasses/dataClassNoName.txt
index 76bb06d100f..8e4fbb92584 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/dataClassNoName.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/dataClassNoName.txt
@@ -3,9 +3,9 @@ package
 public final data class <no name provided> {
     public constructor <no name provided>()
     public final /*synthesized*/ fun copy(): <no name provided>
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public data interface <no name provided> {
diff --git a/compiler/testData/diagnostics/tests/dataClasses/dataClassVarargParam.txt b/compiler/testData/diagnostics/tests/dataClasses/dataClassVarargParam.txt
index 4f6f644a84c..36a76bac9e7 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/dataClassVarargParam.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/dataClassVarargParam.txt
@@ -7,15 +7,15 @@ public final data class My {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Array<out kotlin.String>
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ vararg y: kotlin.String /*kotlin.Array<out kotlin.String>*/ = ...): My
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class Your {
     public constructor Your(/*0*/ vararg z: kotlin.String /*kotlin.Array<out kotlin.String>*/)
     public final /*synthesized*/ fun copy(/*0*/ vararg z: kotlin.String /*kotlin.Array<out kotlin.String>*/): Your
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/dataInheritance.txt b/compiler/testData/diagnostics/tests/dataClasses/dataInheritance.txt
index 78d9968ee02..0e53a3d9144 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/dataInheritance.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/dataInheritance.txt
@@ -5,9 +5,9 @@ public abstract data class Base {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): Base
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class Complex : SuperInterface, SuperClass {
@@ -15,9 +15,9 @@ public final data class Complex : SuperInterface, SuperClass {
     public final val y: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ y: kotlin.Int = ...): Complex
-    public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*2*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*2*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*2*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final class Derived : Base {
@@ -39,9 +39,9 @@ public final data class Nasty : Base {
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final override /*1*/ /*fake_override*/ fun copy(/*0*/ x: kotlin.Int = ...): Base
     public final /*synthesized*/ fun copy(/*0*/ z: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Nasty
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class SubData : Complex {
@@ -51,9 +51,9 @@ public final data class SubData : Complex {
     public final override /*1*/ /*synthesized*/ fun component1(): kotlin.String
     public final override /*1*/ /*fake_override*/ fun copy(/*0*/ y: kotlin.Int = ...): Complex
     public final /*synthesized*/ fun copy(/*0*/ sss: kotlin.String = ...): SubData
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public open class SuperClass {
diff --git a/compiler/testData/diagnostics/tests/dataClasses/dataObject.txt b/compiler/testData/diagnostics/tests/dataClasses/dataObject.txt
index b514c78534d..b270a54a34b 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/dataObject.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/dataObject.txt
@@ -7,7 +7,7 @@ public data object Object {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Object
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/emptyConstructor.txt b/compiler/testData/diagnostics/tests/dataClasses/emptyConstructor.txt
index d89fcfc4d27..feff564669c 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/emptyConstructor.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/emptyConstructor.txt
@@ -5,7 +5,7 @@ public fun foo(/*0*/ a: A): kotlin.Unit
 public final data class A {
     public constructor A()
     public final /*synthesized*/ fun copy(): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/extensionComponentsOnNullable.txt b/compiler/testData/diagnostics/tests/dataClasses/extensionComponentsOnNullable.txt
index 85448291dc5..0545a580a9e 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/extensionComponentsOnNullable.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/extensionComponentsOnNullable.txt
@@ -21,7 +21,7 @@ public final data class NormalData</*0*/ T> {
     public final operator /*synthesized*/ fun component1(): T
     public final operator /*synthesized*/ fun component2(): T
     public final /*synthesized*/ fun copy(/*0*/ x: T = ..., /*1*/ y: T = ...): NormalData<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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasComponent1.txt b/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasComponent1.txt
index 33f5dce3721..ccc4a790828 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasComponent1.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasComponent1.txt
@@ -5,9 +5,9 @@ public final data class A : T {
     public final val x: kotlin.Int
     public final operator override /*1*/ /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public interface T {
diff --git a/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasFinalComponent1.txt b/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasFinalComponent1.txt
index a7811b0adde..e574f259e36 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasFinalComponent1.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/implementTraitWhichHasFinalComponent1.txt
@@ -5,9 +5,9 @@ public final data class A : T {
     public final val x: kotlin.Int
     public final operator override /*1*/ /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public interface T {
diff --git a/compiler/testData/diagnostics/tests/dataClasses/innerDataClass.txt b/compiler/testData/diagnostics/tests/dataClasses/innerDataClass.txt
index 012fef42fc5..d993ede68e9 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/innerDataClass.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/innerDataClass.txt
@@ -11,8 +11,8 @@ public final class Outer {
         public final val x: kotlin.Int
         public final operator /*synthesized*/ fun component1(): kotlin.Int
         public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): Outer.Inner
-        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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
     }
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/innerOuterDataClass.txt b/compiler/testData/diagnostics/tests/dataClasses/innerOuterDataClass.txt
index 4c6f3154d8a..2942ce65f37 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/innerOuterDataClass.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/innerOuterDataClass.txt
@@ -5,7 +5,7 @@ public final data class Outer {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): Outer
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/multiDeclaration.txt b/compiler/testData/diagnostics/tests/dataClasses/multiDeclaration.txt
index bdfbdc1aa80..71ad8199567 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/multiDeclaration.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/multiDeclaration.txt
@@ -9,7 +9,7 @@ public final data class A {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/multiDeclarationFor.txt b/compiler/testData/diagnostics/tests/dataClasses/multiDeclarationFor.txt
index e4e6c7a8e49..0010fc51e81 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/multiDeclarationFor.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/multiDeclarationFor.txt
@@ -9,7 +9,7 @@ public final data class A {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/noConstructor.txt b/compiler/testData/diagnostics/tests/dataClasses/noConstructor.txt
index d89fcfc4d27..feff564669c 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/noConstructor.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/noConstructor.txt
@@ -5,7 +5,7 @@ public fun foo(/*0*/ a: A): kotlin.Unit
 public final data class A {
     public constructor A()
     public final /*synthesized*/ fun copy(): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/oneValParam.txt b/compiler/testData/diagnostics/tests/dataClasses/oneValParam.txt
index 728b7ca1151..b5d8bc94953 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/oneValParam.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/oneValParam.txt
@@ -7,7 +7,7 @@ public final data class A {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/repeatedProperties.txt b/compiler/testData/diagnostics/tests/dataClasses/repeatedProperties.txt
index 8a7f4c25cdc..706ac9c2726 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/repeatedProperties.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/repeatedProperties.txt
@@ -10,9 +10,9 @@ public final data class A1 {
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final operator /*synthesized*/ fun component3(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ..., /*2*/ x: kotlin.Int = ...): A1
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class A2 {
@@ -23,9 +23,9 @@ public final data class A2 {
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A2
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class A3 {
@@ -35,7 +35,7 @@ public final data class A3 {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ <no name provided>: kotlin.Int = ..., /*1*/ <no name provided>: kotlin.Int = ...): A3
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/sealedDataClass.txt b/compiler/testData/diagnostics/tests/dataClasses/sealedDataClass.txt
index 414072771e3..5a1f87b58de 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/sealedDataClass.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/sealedDataClass.txt
@@ -5,9 +5,9 @@ public sealed data class My {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): My
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 
     public final class His : My {
         public constructor His(/*0*/ y: kotlin.Int)
diff --git a/compiler/testData/diagnostics/tests/dataClasses/strange.txt b/compiler/testData/diagnostics/tests/dataClasses/strange.txt
index ec6dbdffbeb..d3ff4f8e835 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/strange.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/strange.txt
@@ -17,7 +17,7 @@ public final data enum class First : kotlin.Enum<First> {
     protected/*protected and package*/ final override /*1*/ /*fake_override*/ /*isHiddenForResolutionEverywhereBesideSupercalls*/ fun finalize(): kotlin.Unit
     public final override /*1*/ /*fake_override*/ /*isHiddenForResolutionEverywhereBesideSupercalls*/ fun getDeclaringClass(): java.lang.Class<First!>!
     public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 
     // Static members
     public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): First
@@ -29,17 +29,17 @@ public final data annotation class Fourth : kotlin.Annotation {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): Fourth
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public data object Second {
     private constructor Second()
     public final /*synthesized*/ fun copy(): Second
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public data interface Third {
diff --git a/compiler/testData/diagnostics/tests/dataClasses/twoValParams.txt b/compiler/testData/diagnostics/tests/dataClasses/twoValParams.txt
index bdfbdc1aa80..71ad8199567 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/twoValParams.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/twoValParams.txt
@@ -9,7 +9,7 @@ public final data class A {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/dataClasses/twoVarParams.txt b/compiler/testData/diagnostics/tests/dataClasses/twoVarParams.txt
index b59cfc837c4..16527c98f73 100644
--- a/compiler/testData/diagnostics/tests/dataClasses/twoVarParams.txt
+++ b/compiler/testData/diagnostics/tests/dataClasses/twoVarParams.txt
@@ -9,7 +9,7 @@ public final data class A {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.String = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/declarationChecks/multiDeclarations/kt2829.txt b/compiler/testData/diagnostics/tests/declarationChecks/multiDeclarations/kt2829.txt
index 7fe15992cee..9143da21ec4 100644
--- a/compiler/testData/diagnostics/tests/declarationChecks/multiDeclarations/kt2829.txt
+++ b/compiler/testData/diagnostics/tests/declarationChecks/multiDeclarations/kt2829.txt
@@ -12,8 +12,8 @@ package test {
         public final operator /*synthesized*/ fun component1(): A
         public final operator /*synthesized*/ fun component2(): B
         public final /*synthesized*/ fun copy(/*0*/ a: A = ..., /*1*/ b: B = ...): test.Pair<A, B>
-        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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
     }
 }
diff --git a/compiler/testData/diagnostics/tests/duplicateJvmSignature/specialNames/dataClassCopy.txt b/compiler/testData/diagnostics/tests/duplicateJvmSignature/specialNames/dataClassCopy.txt
index 6d1f584217f..9b2a5ede18a 100644
--- a/compiler/testData/diagnostics/tests/duplicateJvmSignature/specialNames/dataClassCopy.txt
+++ b/compiler/testData/diagnostics/tests/duplicateJvmSignature/specialNames/dataClassCopy.txt
@@ -6,7 +6,7 @@ public final data class C {
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ c: kotlin.Int = ...): C
     public final fun `copy$default`(/*0*/ c: C, /*1*/ x: kotlin.Int, /*2*/ m: kotlin.Int, /*3*/ mh: kotlin.Any): C
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/nullableTypes/safeAccessOnUnit.txt b/compiler/testData/diagnostics/tests/nullableTypes/safeAccessOnUnit.txt
index c42e6700292..6923992e38e 100644
--- a/compiler/testData/diagnostics/tests/nullableTypes/safeAccessOnUnit.txt
+++ b/compiler/testData/diagnostics/tests/nullableTypes/safeAccessOnUnit.txt
@@ -7,7 +7,7 @@ public final data class My {
     public final val x: kotlin.Unit
     public final operator /*synthesized*/ fun component1(): kotlin.Unit
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Unit = ...): My
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/operatorsOverloading/kt3450.txt b/compiler/testData/diagnostics/tests/operatorsOverloading/kt3450.txt
index 65f132f7c6c..aec9d60a8ad 100644
--- a/compiler/testData/diagnostics/tests/operatorsOverloading/kt3450.txt
+++ b/compiler/testData/diagnostics/tests/operatorsOverloading/kt3450.txt
@@ -31,7 +31,7 @@ public final data class Pair</*0*/ out A, /*1*/ out B> {
     public final operator /*synthesized*/ fun component1(): A
     public final operator /*synthesized*/ fun component2(): B
     public final /*synthesized*/ fun copy(/*0*/ first: A = ..., /*1*/ second: B = ...): Pair<A, B>
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/regressions/kt7585/base.txt b/compiler/testData/diagnostics/tests/regressions/kt7585/base.txt
index 75b4c10a526..b26b59240a2 100644
--- a/compiler/testData/diagnostics/tests/regressions/kt7585/base.txt
+++ b/compiler/testData/diagnostics/tests/regressions/kt7585/base.txt
@@ -31,9 +31,9 @@ public final data class Pair</*0*/ out T> {
     public final operator /*synthesized*/ fun component1(): T
     public final operator /*synthesized*/ fun component2(): T
     public final /*synthesized*/ fun copy(/*0*/ a: T = ..., /*1*/ b: T = ...): Pair<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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final class TheirWrapper : Wrapper<E> {
diff --git a/compiler/testData/diagnostics/tests/regressions/kt7585/java.txt b/compiler/testData/diagnostics/tests/regressions/kt7585/java.txt
index b3a30a23db5..2a8e1b387fd 100644
--- a/compiler/testData/diagnostics/tests/regressions/kt7585/java.txt
+++ b/compiler/testData/diagnostics/tests/regressions/kt7585/java.txt
@@ -31,9 +31,9 @@ public final data class Pair</*0*/ out T> {
     public final operator /*synthesized*/ fun component1(): T
     public final operator /*synthesized*/ fun component2(): T
     public final /*synthesized*/ fun copy(/*0*/ a: T = ..., /*1*/ b: T = ...): Pair<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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final class TheirWrapper : Wrapper<E> {
diff --git a/compiler/testData/diagnostics/tests/resolve/priority/synthesizedMembersVsExtension.txt b/compiler/testData/diagnostics/tests/resolve/priority/synthesizedMembersVsExtension.txt
index 0ac093b3d7e..4e58fcccbfd 100644
--- a/compiler/testData/diagnostics/tests/resolve/priority/synthesizedMembersVsExtension.txt
+++ b/compiler/testData/diagnostics/tests/resolve/priority/synthesizedMembersVsExtension.txt
@@ -8,7 +8,7 @@ public final data class A {
     public final val foo: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ foo: kotlin.Int = ...): A
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/sealed/ExhaustiveWhenWithAdditionalMember.txt b/compiler/testData/diagnostics/tests/sealed/ExhaustiveWhenWithAdditionalMember.txt
index 7bdb773312b..b8887b3f613 100644
--- a/compiler/testData/diagnostics/tests/sealed/ExhaustiveWhenWithAdditionalMember.txt
+++ b/compiler/testData/diagnostics/tests/sealed/ExhaustiveWhenWithAdditionalMember.txt
@@ -51,8 +51,8 @@ public sealed class Sealed {
         public final operator /*synthesized*/ fun component1(): kotlin.Int
         public final operator /*synthesized*/ fun component2(): kotlin.Int
         public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Sealed.Tuple
-        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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
     }
 }
diff --git a/compiler/testData/diagnostics/tests/secondaryConstructors/dataClasses.txt b/compiler/testData/diagnostics/tests/secondaryConstructors/dataClasses.txt
index c5737d52ea5..1eac36f90a3 100644
--- a/compiler/testData/diagnostics/tests/secondaryConstructors/dataClasses.txt
+++ b/compiler/testData/diagnostics/tests/secondaryConstructors/dataClasses.txt
@@ -6,9 +6,9 @@ public final data class A1 {
     public final val x: kotlin.String
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.String = ...): A1
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class A2 {
@@ -19,9 +19,9 @@ public final data class A2 {
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ y: kotlin.String = ..., /*1*/ z: kotlin.Int = ...): A2
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class A3 {
@@ -34,7 +34,7 @@ public final data class A3 {
 public final data class A4 {
     internal constructor A4()
     public final /*synthesized*/ fun copy(): A4
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/inference/kt1355.txt b/compiler/testData/diagnostics/tests/smartCasts/inference/kt1355.txt
index 8b7ad241291..52f1dd10861 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/inference/kt1355.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/inference/kt1355.txt
@@ -13,8 +13,8 @@ package a {
         public final var tagName: kotlin.String
         public final operator /*synthesized*/ fun component1(): kotlin.String
         public final /*synthesized*/ fun copy(/*0*/ tagName: kotlin.String = ...): a.Tag
-        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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
     }
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/kt3711.txt b/compiler/testData/diagnostics/tests/smartCasts/kt3711.txt
index e1581fe54a1..68195a8e67b 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/kt3711.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/kt3711.txt
@@ -10,7 +10,7 @@ public final data class StringPair {
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ first: kotlin.String = ..., /*1*/ second: kotlin.String = ...): StringPair
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/kt3899.txt b/compiler/testData/diagnostics/tests/smartCasts/kt3899.txt
index 0cd20d22b3e..38b90caa69b 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/kt3899.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/kt3899.txt
@@ -11,7 +11,7 @@ public final data class StringPair {
     public final operator /*synthesized*/ fun component1(): kotlin.String
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ first: kotlin.String = ..., /*1*/ second: kotlin.String = ...): StringPair
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/propertyAsCondition.txt b/compiler/testData/diagnostics/tests/smartCasts/propertyAsCondition.txt
index ee30f3d295d..130d8e0fdb7 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/propertyAsCondition.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/propertyAsCondition.txt
@@ -9,7 +9,7 @@ public final data class My {
     public final val x: kotlin.Boolean?
     public final operator /*synthesized*/ fun component1(): kotlin.Boolean?
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Boolean? = ...): My
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/safecalls/property.txt b/compiler/testData/diagnostics/tests/smartCasts/safecalls/property.txt
index 0c668999a23..55dde7b763f 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/safecalls/property.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/safecalls/property.txt
@@ -7,7 +7,7 @@ public final data class MyClass {
     public final val x: kotlin.String?
     public final operator /*synthesized*/ fun component1(): kotlin.String?
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.String? = ...): MyClass
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/doWhileWithBreak.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/doWhileWithBreak.txt
index 571281d3360..5e4781d2e3c 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/doWhileWithBreak.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/doWhileWithBreak.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Boolean
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEach.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEach.txt
index 8ba36a01d1a..22721af0e97 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEach.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEach.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Unit
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithBreak.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithBreak.txt
index 8ba36a01d1a..22721af0e97 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithBreak.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithBreak.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Unit
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithContinue.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithContinue.txt
index 8ba36a01d1a..22721af0e97 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithContinue.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/forEachWithContinue.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Unit
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/infiniteWhileWithBreak.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/infiniteWhileWithBreak.txt
index 571281d3360..5e4781d2e3c 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/infiniteWhileWithBreak.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/infiniteWhileWithBreak.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Boolean
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/iterations.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/iterations.txt
index 712d67b36cc..fb9fadfdf9b 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/iterations.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/iterations.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Unit
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/whileWithBreak.txt b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/whileWithBreak.txt
index 571281d3360..5e4781d2e3c 100644
--- a/compiler/testData/diagnostics/tests/smartCasts/varnotnull/whileWithBreak.txt
+++ b/compiler/testData/diagnostics/tests/smartCasts/varnotnull/whileWithBreak.txt
@@ -8,8 +8,8 @@ public final data class SomeObject {
     public final operator /*synthesized*/ fun component1(): SomeObject?
     public final /*synthesized*/ fun copy(/*0*/ n: SomeObject? = ...): SomeObject
     public final fun doSomething(): kotlin.Boolean
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun next(): SomeObject?
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/sourceCompatibility/noDataClassInheritance.txt b/compiler/testData/diagnostics/tests/sourceCompatibility/noDataClassInheritance.txt
index 7d5e02b560e..57c30c711d6 100644
--- a/compiler/testData/diagnostics/tests/sourceCompatibility/noDataClassInheritance.txt
+++ b/compiler/testData/diagnostics/tests/sourceCompatibility/noDataClassInheritance.txt
@@ -11,9 +11,9 @@ public abstract data class Base {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): Base
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final data class Complex : Allowed, NotAllowed {
@@ -21,9 +21,9 @@ public final data class Complex : Allowed, NotAllowed {
     public final val y: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ y: kotlin.Int = ...): Complex
-    public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
+    public open override /*2*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*2*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*2*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public final class Derived : Base {
@@ -45,9 +45,9 @@ public final data class Nasty : Base {
     public final operator /*synthesized*/ fun component2(): kotlin.Int
     public final override /*1*/ /*fake_override*/ fun copy(/*0*/ x: kotlin.Int = ...): Base
     public final /*synthesized*/ fun copy(/*0*/ z: kotlin.Int = ..., /*1*/ y: kotlin.Int = ...): Nasty
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 public open class NotAllowed {
diff --git a/compiler/testData/diagnostics/testsWithStdLib/functionLiterals/pseudocodeMemoryOverhead.txt b/compiler/testData/diagnostics/testsWithStdLib/functionLiterals/pseudocodeMemoryOverhead.txt
index 8ef3e5656f0..0fcadba2738 100644
--- a/compiler/testData/diagnostics/testsWithStdLib/functionLiterals/pseudocodeMemoryOverhead.txt
+++ b/compiler/testData/diagnostics/testsWithStdLib/functionLiterals/pseudocodeMemoryOverhead.txt
@@ -42,9 +42,9 @@ private final data class BinaryOperationKey</*0*/ A, /*1*/ B> {
     public final operator /*synthesized*/ fun component2(): CompileTimeType<out B>
     public final operator /*synthesized*/ fun component3(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ f: CompileTimeType<out A> = ..., /*1*/ g: CompileTimeType<out B> = ..., /*2*/ functionName: kotlin.String = ...): BinaryOperationKey<A, B>
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
 
 private final class CompileTimeType</*0*/ T> {
@@ -61,7 +61,7 @@ private final data class UnaryOperationKey</*0*/ A> {
     public final operator /*synthesized*/ fun component1(): CompileTimeType<out A>
     public final operator /*synthesized*/ fun component2(): kotlin.String
     public final /*synthesized*/ fun copy(/*0*/ f: CompileTimeType<out A> = ..., /*1*/ functionName: kotlin.String = ...): UnaryOperationKey<A>
-    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 open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/testsWithStdLib/regression/ea66827_dataClassWrongToString.txt b/compiler/testData/diagnostics/testsWithStdLib/regression/ea66827_dataClassWrongToString.txt
index 5e0d49e1e35..55ffa785fe9 100644
--- a/compiler/testData/diagnostics/testsWithStdLib/regression/ea66827_dataClassWrongToString.txt
+++ b/compiler/testData/diagnostics/testsWithStdLib/regression/ea66827_dataClassWrongToString.txt
@@ -5,8 +5,8 @@ public final data class A {
     public final val x: kotlin.Int
     public final operator /*synthesized*/ fun component1(): kotlin.Int
     public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): A
-    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*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
     public final fun toArray(): kotlin.IntArray
     public open override /*1*/ fun toString(): kotlin.collections.List<kotlin.Int>
 }