[Test] Add test for KT-54645

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java

@@ -7142,6 +7142,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
         public void testInlineFunctionCompanionPropertyAccess() throws Exception {
             runTest("compiler/testData/codegen/box/companion/inlineFunctionCompanionPropertyAccess.kt");
         }
+
+        @Test
+        @TestMetadata("kt54645.kt")
+        public void testKt54645() throws Exception {
+            runTest("compiler/testData/codegen/box/companion/kt54645.kt");
+        }
     }
 
     @Nested

compiler/testData/codegen/box/companion/kt54645.kt

@@ -0,0 +1,22 @@
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_FIR: JVM_IR
+// ISSUE: KT-54645
+
+abstract class Base {
+    open class Nested
+}
+
+sealed class Derived : Base() {
+    open class Nested
+}
+
+class Impl() : Derived() {
+    companion object : Nested()
+}
+
+fun takeDerivedNested(x: Derived.Nested) {}
+
+fun box(): String {
+    takeDerivedNested(Impl)
+    return "OK"
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java

@@ -7142,6 +7142,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
         public void testInlineFunctionCompanionPropertyAccess() throws Exception {
             runTest("compiler/testData/codegen/box/companion/inlineFunctionCompanionPropertyAccess.kt");
         }
+
+        @Test
+        @TestMetadata("kt54645.kt")
+        public void testKt54645() throws Exception {
+            runTest("compiler/testData/codegen/box/companion/kt54645.kt");
+        }
     }
 
     @Nested