FIR: reproduce KT-42656

compiler/fir/fir2ir/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java

@@ -2023,6 +2023,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/callableReference/genericConstructorReference.kt");
         }
 
+        @TestMetadata("javaField.kt")
+        public void testJavaField() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/javaField.kt");
+        }
+
         @TestMetadata("kt37604.kt")
         public void testKt37604() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/kt37604.kt");

compiler/testData/codegen/box/callableReference/javaField.kt

@@ -0,0 +1,27 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// TARGET_BACKEND: JVM
+// WITH_RUNTIME
+
+// FILE: JClass.java
+
+import java.util.Arrays;
+import java.util.Set;
+import java.util.HashSet;
+
+public class JClass {
+    public final Set<String> field;
+
+    public JClass(String... ins) {
+        field = new HashSet<String>(Arrays.asList(ins));
+    }
+}
+
+// FILE: main.kt
+
+fun collect(lst: List<JClass>): String {
+    return lst.flatMap(JClass::field).joinToString(separator = "")
+}
+
+fun box(): String {
+    return collect(listOf(JClass("O"), JClass("K")))
+}

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

@@ -2043,6 +2043,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/callableReference/genericConstructorReference.kt");
         }
 
+        @TestMetadata("javaField.kt")
+        public void testJavaField() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/javaField.kt");
+        }
+
         @TestMetadata("kt37604.kt")
         public void testKt37604() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/kt37604.kt");

compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -2043,6 +2043,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/callableReference/genericConstructorReference.kt");
         }
 
+        @TestMetadata("javaField.kt")
+        public void testJavaField() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/javaField.kt");
+        }
+
         @TestMetadata("kt37604.kt")
         public void testKt37604() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/kt37604.kt");

compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java

@@ -2023,6 +2023,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/callableReference/genericConstructorReference.kt");
         }
 
+        @TestMetadata("javaField.kt")
+        public void testJavaField() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/javaField.kt");
+        }
+
         @TestMetadata("kt37604.kt")
         public void testKt37604() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/kt37604.kt");