diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt
index 59360293aa3..f0fa3b94d29 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt
@@ -92,18 +92,22 @@ class Fir2IrConverter(
             )
         }
         val processedCallableNames = mutableSetOf<Name>()
+        val classes = mutableListOf<FirRegularClass>()
         for (declaration in sortBySynthetic(anonymousObject.declarations)) {
-            if (declaration is FirRegularClass) {
+            val irDeclaration = if (declaration is FirRegularClass) {
+                classes += declaration
                 registerClassAndNestedClasses(declaration, irClass)
-                processClassAndNestedClassHeaders(declaration)
-            }
-            val irDeclaration = processMemberDeclaration(declaration, anonymousObject, irClass) ?: continue
-            when (declaration) {
-                is FirSimpleFunction -> processedCallableNames += declaration.name
-                is FirProperty -> processedCallableNames += declaration.name
+            } else {
+                when (declaration) {
+                    is FirSimpleFunction -> processedCallableNames += declaration.name
+                    is FirProperty -> processedCallableNames += declaration.name
+                }
+                processMemberDeclaration(declaration, anonymousObject, irClass) ?: continue
             }
             irClass.declarations += irDeclaration
         }
+        classes.forEach { processClassAndNestedClassHeaders(it) }
+        classes.forEach { processClassMembers(it) }
         // Add delegated members *before* fake override generations.
         // Otherwise, fake overrides for delegated members, which are redundant, will be added.
         val realDeclarations = delegatedMembers(irClass) + anonymousObject.declarations
diff --git a/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/fir/Fir2IrTextTestGenerated.java b/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/fir/Fir2IrTextTestGenerated.java
index f226f6c6345..26c2417dd2b 100644
--- a/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/fir/Fir2IrTextTestGenerated.java
+++ b/compiler/fir/fir2ir/tests/org/jetbrains/kotlin/fir/Fir2IrTextTestGenerated.java
@@ -1747,6 +1747,11 @@ public class Fir2IrTextTestGenerated extends AbstractFir2IrTextTest {
             runTest("compiler/testData/ir/irText/firProblems/FirBuilder.kt");
         }
 
+        @TestMetadata("InnerClassInAnonymous.kt")
+        public void testInnerClassInAnonymous() throws Exception {
+            runTest("compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.kt");
+        }
+
         @TestMetadata("putIfAbsent.kt")
         public void testPutIfAbsent() throws Exception {
             runTest("compiler/testData/ir/irText/firProblems/putIfAbsent.kt");
diff --git a/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.fir.txt b/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.fir.txt
new file mode 100644
index 00000000000..b0bf9cce90a
--- /dev/null
+++ b/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.fir.txt
@@ -0,0 +1,116 @@
+FILE fqName:<root> fileName:/InnerClassInAnonymous.kt
+  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String
+    BLOCK_BODY
+      VAR name:obj type:<root>.box.<no name provided> [val]
+        BLOCK type=<root>.box.<no name provided> origin=OBJECT_LITERAL
+          CLASS CLASS name:<no name provided> modality:FINAL visibility:local superTypes:[kotlin.Any]
+            $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.box.<no name provided>
+            CONSTRUCTOR visibility:private <> () returnType:<root>.box.<no name provided> [primary]
+              BLOCK_BODY
+                DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+                INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:<no name provided> modality:FINAL visibility:local superTypes:[kotlin.Any]'
+            PROPERTY name:end visibility:public modality:FINAL [val]
+              FIELD PROPERTY_BACKING_FIELD name:end type:kotlin.String visibility:private [final]
+                EXPRESSION_BODY
+                  CONST String type=kotlin.String value="K"
+              FUN DEFAULT_PROPERTY_ACCESSOR name:<get-end> visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>) returnType:kotlin.String
+                correspondingProperty: PROPERTY name:end visibility:public modality:FINAL [val]
+                $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+                BLOCK_BODY
+                  RETURN type=kotlin.Nothing from='public final fun <get-end> (): kotlin.String declared in <root>.box.<no name provided>'
+                    GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:end type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                      receiver: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>.<get-end>' type=<root>.box.<no name provided> origin=null
+            FUN name:foo visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>) returnType:kotlin.String
+              $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+              BLOCK_BODY
+                RETURN type=kotlin.Nothing from='public final fun foo (): kotlin.String declared in <root>.box.<no name provided>'
+                  CALL 'public final fun bar (): kotlin.String declared in <root>.box.<no name provided>.Some' type=kotlin.String origin=null
+                    $this: CONSTRUCTOR_CALL 'public constructor <init> (s: kotlin.String) [primary] declared in <root>.box.<no name provided>.Some' type=<root>.box.<no name provided>.Some origin=null
+                      $outer: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>.foo' type=<root>.box.<no name provided> origin=null
+                      s: CONST String type=kotlin.String value="O"
+            CLASS CLASS name:Some modality:FINAL visibility:local [inner] superTypes:[<root>.box.<no name provided>.Base]
+              $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.box.<no name provided>.Some
+              CONSTRUCTOR visibility:public <> ($this:<root>.box.<no name provided>, s:kotlin.String) returnType:<root>.box.<no name provided>.Some [primary]
+                $outer: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+                VALUE_PARAMETER name:s index:0 type:kotlin.String
+                BLOCK_BODY
+                  DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> (s: kotlin.String) [primary] declared in <root>.box.<no name provided>.Base'
+                    $this: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>' type=<root>.box.<no name provided> origin=null
+                    s: GET_VAR 's: kotlin.String declared in <root>.box.<no name provided>.Some.<init>' type=kotlin.String origin=null
+                  INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Some modality:FINAL visibility:local [inner] superTypes:[<root>.box.<no name provided>.Base]'
+              FUN name:bar visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>.Some) returnType:kotlin.String
+                $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>.Some
+                BLOCK_BODY
+                  RETURN type=kotlin.Nothing from='public final fun bar (): kotlin.String declared in <root>.box.<no name provided>.Some'
+                    CALL 'public final fun plus (other: kotlin.Any?): kotlin.String [operator] declared in kotlin.String' type=kotlin.String origin=PLUS
+                      $this: CALL 'public final fun <get-s> (): kotlin.String declared in <root>.box.<no name provided>.Base' type=kotlin.String origin=GET_PROPERTY
+                        $this: GET_VAR '<this>: <root>.box.<no name provided>.Some declared in <root>.box.<no name provided>.Some.bar' type=<root>.box.<no name provided>.Some origin=null
+                      other: CALL 'public final fun <get-end> (): kotlin.String declared in <root>.box.<no name provided>' type=kotlin.String origin=GET_PROPERTY
+                        $this: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>' type=<root>.box.<no name provided> origin=null
+              PROPERTY FAKE_OVERRIDE name:s visibility:public modality:FINAL [fake_override,val]
+                FUN FAKE_OVERRIDE name:<get-s> visibility:public modality:FINAL <> () returnType:kotlin.String [fake_override]
+                  correspondingProperty: PROPERTY FAKE_OVERRIDE name:s visibility:public modality:FINAL [fake_override,val]
+                  overridden:
+                    public final fun <get-s> (): kotlin.String declared in <root>.box.<no name provided>.Base
+              FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+                overridden:
+                  public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+                VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+              FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+                overridden:
+                  public open fun hashCode (): kotlin.Int declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+              FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+                overridden:
+                  public open fun toString (): kotlin.String declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+            CLASS CLASS name:Base modality:OPEN visibility:local [inner] superTypes:[kotlin.Any]
+              $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.box.<no name provided>.Base
+              CONSTRUCTOR visibility:public <> ($this:<root>.box.<no name provided>, s:kotlin.String) returnType:<root>.box.<no name provided>.Base [primary]
+                $outer: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+                VALUE_PARAMETER name:s index:0 type:kotlin.String
+                BLOCK_BODY
+                  DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+                  INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Base modality:OPEN visibility:local [inner] superTypes:[kotlin.Any]'
+              PROPERTY name:s visibility:public modality:FINAL [val]
+                FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.String visibility:private [final]
+                  EXPRESSION_BODY
+                    GET_VAR 's: kotlin.String declared in <root>.box.<no name provided>.Base.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+                FUN DEFAULT_PROPERTY_ACCESSOR name:<get-s> visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>.Base) returnType:kotlin.String
+                  correspondingProperty: PROPERTY name:s visibility:public modality:FINAL [val]
+                  $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>.Base
+                  BLOCK_BODY
+                    RETURN type=kotlin.Nothing from='public final fun <get-s> (): kotlin.String declared in <root>.box.<no name provided>.Base'
+                      GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                        receiver: GET_VAR '<this>: <root>.box.<no name provided>.Base declared in <root>.box.<no name provided>.Base.<get-s>' type=<root>.box.<no name provided>.Base origin=null
+              FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+                overridden:
+                  public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+                VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+              FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+                overridden:
+                  public open fun hashCode (): kotlin.Int declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+              FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+                overridden:
+                  public open fun toString (): kotlin.String declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+            FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+              overridden:
+                public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+              $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+              VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+            FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+              overridden:
+                public open fun hashCode (): kotlin.Int declared in kotlin.Any
+              $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+            FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+              overridden:
+                public open fun toString (): kotlin.String declared in kotlin.Any
+              $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+          CONSTRUCTOR_CALL 'private constructor <init> () [primary] declared in <root>.box.<no name provided>' type=<root>.box.<no name provided> origin=OBJECT_LITERAL
+      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
+        CALL 'public final fun foo (): kotlin.String declared in <root>.box.<no name provided>' type=kotlin.String origin=null
+          $this: GET_VAR 'val obj: <root>.box.<no name provided> [val] declared in <root>.box' type=<root>.box.<no name provided> origin=null
diff --git a/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.kt b/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.kt
new file mode 100644
index 00000000000..770f53b50fe
--- /dev/null
+++ b/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.kt
@@ -0,0 +1,14 @@
+fun box(): String {
+    val obj = object {
+        val end = "K"
+
+        fun foo() = Some("O").bar()
+
+        inner class Some(s: String) : Base(s) {
+            fun bar() = s + end
+        }
+
+        open inner class Base(val s: String)
+    }
+    return obj.foo()
+}
\ No newline at end of file
diff --git a/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.txt b/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.txt
new file mode 100644
index 00000000000..10a472f5e2e
--- /dev/null
+++ b/compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.txt
@@ -0,0 +1,117 @@
+FILE fqName:<root> fileName:/InnerClassInAnonymous.kt
+  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String
+    BLOCK_BODY
+      VAR name:obj type:<root>.box.<no name provided> [val]
+        BLOCK type=<root>.box.<no name provided> origin=OBJECT_LITERAL
+          CLASS CLASS name:<no name provided> modality:FINAL visibility:local superTypes:[kotlin.Any]
+            $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.box.<no name provided>
+            CONSTRUCTOR visibility:public <> () returnType:<root>.box.<no name provided> [primary]
+              BLOCK_BODY
+                DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+                INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:<no name provided> modality:FINAL visibility:local superTypes:[kotlin.Any]'
+            PROPERTY name:end visibility:public modality:FINAL [val]
+              FIELD PROPERTY_BACKING_FIELD name:end type:kotlin.String visibility:private [final]
+                EXPRESSION_BODY
+                  CONST String type=kotlin.String value="K"
+              FUN DEFAULT_PROPERTY_ACCESSOR name:<get-end> visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>) returnType:kotlin.String
+                correspondingProperty: PROPERTY name:end visibility:public modality:FINAL [val]
+                $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+                BLOCK_BODY
+                  RETURN type=kotlin.Nothing from='public final fun <get-end> (): kotlin.String declared in <root>.box.<no name provided>'
+                    GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:end type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                      receiver: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>.<get-end>' type=<root>.box.<no name provided> origin=null
+            FUN name:foo visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>) returnType:kotlin.String
+              $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+              BLOCK_BODY
+                RETURN type=kotlin.Nothing from='public final fun foo (): kotlin.String declared in <root>.box.<no name provided>'
+                  CALL 'public final fun bar (): kotlin.String declared in <root>.box.<no name provided>.Some' type=kotlin.String origin=null
+                    $this: CONSTRUCTOR_CALL 'public constructor <init> (s: kotlin.String) [primary] declared in <root>.box.<no name provided>.Some' type=<root>.box.<no name provided>.Some origin=null
+                      $outer: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>.foo' type=<root>.box.<no name provided> origin=null
+                      s: CONST String type=kotlin.String value="O"
+            CLASS CLASS name:Some modality:FINAL visibility:local [inner] superTypes:[<root>.box.<no name provided>.Base]
+              $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.box.<no name provided>.Some
+              CONSTRUCTOR visibility:public <> ($this:<root>.box.<no name provided>, s:kotlin.String) returnType:<root>.box.<no name provided>.Some [primary]
+                $outer: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+                VALUE_PARAMETER name:s index:0 type:kotlin.String
+                BLOCK_BODY
+                  DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> (s: kotlin.String) [primary] declared in <root>.box.<no name provided>.Base'
+                    $this: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>.Some.<init>' type=<root>.box.<no name provided> origin=null
+                    s: GET_VAR 's: kotlin.String declared in <root>.box.<no name provided>.Some.<init>' type=kotlin.String origin=null
+                  INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Some modality:FINAL visibility:local [inner] superTypes:[<root>.box.<no name provided>.Base]'
+              FUN name:bar visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>.Some) returnType:kotlin.String
+                $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>.Some
+                BLOCK_BODY
+                  RETURN type=kotlin.Nothing from='public final fun bar (): kotlin.String declared in <root>.box.<no name provided>.Some'
+                    CALL 'public final fun plus (other: kotlin.Any?): kotlin.String [operator] declared in kotlin.String' type=kotlin.String origin=PLUS
+                      $this: CALL 'public final fun <get-s> (): kotlin.String [fake_override] declared in <root>.box.<no name provided>.Some' type=kotlin.String origin=GET_PROPERTY
+                        $this: GET_VAR '<this>: <root>.box.<no name provided>.Some declared in <root>.box.<no name provided>.Some.bar' type=<root>.box.<no name provided>.Some origin=null
+                      other: CALL 'public final fun <get-end> (): kotlin.String declared in <root>.box.<no name provided>' type=kotlin.String origin=GET_PROPERTY
+                        $this: GET_VAR '<this>: <root>.box.<no name provided> declared in <root>.box.<no name provided>' type=<root>.box.<no name provided> origin=null
+              PROPERTY FAKE_OVERRIDE name:s visibility:public modality:FINAL [fake_override,val]
+                FUN FAKE_OVERRIDE name:<get-s> visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>.Base) returnType:kotlin.String [fake_override]
+                  correspondingProperty: PROPERTY FAKE_OVERRIDE name:s visibility:public modality:FINAL [fake_override,val]
+                  overridden:
+                    public final fun <get-s> (): kotlin.String declared in <root>.box.<no name provided>.Base
+                  $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>.Base
+              FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+                overridden:
+                  public open fun equals (other: kotlin.Any?): kotlin.Boolean [fake_override,operator] declared in <root>.box.<no name provided>.Base
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+                VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+              FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+                overridden:
+                  public open fun hashCode (): kotlin.Int [fake_override] declared in <root>.box.<no name provided>.Base
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+              FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+                overridden:
+                  public open fun toString (): kotlin.String [fake_override] declared in <root>.box.<no name provided>.Base
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+            CLASS CLASS name:Base modality:OPEN visibility:local [inner] superTypes:[kotlin.Any]
+              $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.box.<no name provided>.Base
+              CONSTRUCTOR visibility:public <> ($this:<root>.box.<no name provided>, s:kotlin.String) returnType:<root>.box.<no name provided>.Base [primary]
+                $outer: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>
+                VALUE_PARAMETER name:s index:0 type:kotlin.String
+                BLOCK_BODY
+                  DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+                  INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Base modality:OPEN visibility:local [inner] superTypes:[kotlin.Any]'
+              PROPERTY name:s visibility:public modality:FINAL [val]
+                FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.String visibility:private [final]
+                  EXPRESSION_BODY
+                    GET_VAR 's: kotlin.String declared in <root>.box.<no name provided>.Base.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+                FUN DEFAULT_PROPERTY_ACCESSOR name:<get-s> visibility:public modality:FINAL <> ($this:<root>.box.<no name provided>.Base) returnType:kotlin.String
+                  correspondingProperty: PROPERTY name:s visibility:public modality:FINAL [val]
+                  $this: VALUE_PARAMETER name:<this> type:<root>.box.<no name provided>.Base
+                  BLOCK_BODY
+                    RETURN type=kotlin.Nothing from='public final fun <get-s> (): kotlin.String declared in <root>.box.<no name provided>.Base'
+                      GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:s type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                        receiver: GET_VAR '<this>: <root>.box.<no name provided>.Base declared in <root>.box.<no name provided>.Base.<get-s>' type=<root>.box.<no name provided>.Base origin=null
+              FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+                overridden:
+                  public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+                VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+              FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+                overridden:
+                  public open fun hashCode (): kotlin.Int declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+              FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+                overridden:
+                  public open fun toString (): kotlin.String declared in kotlin.Any
+                $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+            FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+              overridden:
+                public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+              $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+              VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+            FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+              overridden:
+                public open fun hashCode (): kotlin.Int declared in kotlin.Any
+              $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+            FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+              overridden:
+                public open fun toString (): kotlin.String declared in kotlin.Any
+              $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+          CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in <root>.box.<no name provided>' type=<root>.box.<no name provided> origin=OBJECT_LITERAL
+      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
+        CALL 'public final fun foo (): kotlin.String declared in <root>.box.<no name provided>' type=kotlin.String origin=null
+          $this: GET_VAR 'val obj: <root>.box.<no name provided> [val] declared in <root>.box' type=<root>.box.<no name provided> origin=null
diff --git a/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java b/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
index 4e7e08e9157..a792bf5bd3a 100644
--- a/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
@@ -1746,6 +1746,11 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
             runTest("compiler/testData/ir/irText/firProblems/FirBuilder.kt");
         }
 
+        @TestMetadata("InnerClassInAnonymous.kt")
+        public void testInnerClassInAnonymous() throws Exception {
+            runTest("compiler/testData/ir/irText/firProblems/InnerClassInAnonymous.kt");
+        }
+
         @TestMetadata("putIfAbsent.kt")
         public void testPutIfAbsent() throws Exception {
             runTest("compiler/testData/ir/irText/firProblems/putIfAbsent.kt");