K2 JS/Native: reproduce KT-57986

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

@@ -18541,6 +18541,12 @@ public class FirLightTreeBlackBoxCodegenTestGenerated extends AbstractFirLightTr
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {

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

@@ -18541,6 +18541,12 @@ public class FirPsiBlackBoxCodegenTestGenerated extends AbstractFirPsiBlackBoxCo
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {

compiler/testData/codegen/box/fir/toLong.kt

@@ -0,0 +1,20 @@
+// ISSUE: KT-57986
+// IGNORE_BACKEND_K2: JS_IR, NATIVE
+
+// MODULE: m1
+// FILE: m1.kt
+
+fun foo() = 42
+
+val x = foo()
+val y = x.toLong()
+
+// MODULE: m2(m1)
+// FILE: m2.kt
+
+fun box(): String {
+    if (y == 42L) {
+        return "OK"
+    }
+    return y.toString()
+}

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

@@ -17664,6 +17664,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
         public void testSuspendFunctionReference() throws Exception {
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
+
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @Nested

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

@@ -18541,6 +18541,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {

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

@@ -18541,6 +18541,12 @@ public class IrBlackBoxCodegenWithIrInlinerTestGenerated extends AbstractIrBlack
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {

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

@@ -14632,6 +14632,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
         public void testSuspendFunctionReference() throws Exception {
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
+
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/fullJdk")