JVM IR: skip temporary variables in InventNamesForLocalClasses

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/InventNamesForLocalClasses.kt

@@ -88,6 +88,15 @@ class InventNamesForLocalClasses(private val context: JvmBackendContext) : FileL
                 return
             }
 
+            // We explicitly skip temporary variables (such as a for loop iterator, or a temporary value for an elvis operator)
+            // because they are not present in the original source code and their names should not affect names of local entities.
+            if (declaration.origin == IrDeclarationOrigin.FOR_LOOP_ITERATOR ||
+                declaration.origin == IrDeclarationOrigin.IR_TEMPORARY_VARIABLE
+            ) {
+                declaration.acceptChildren(this, data)
+                return
+            }
+
             val enclosingName = data.enclosingName
             val simpleName = declaration.name.asString()
 

compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+fun box(): String {
+    var result = ""
+    for (x in listOf('O', 'A', 'K').filter { it > 'D' }) {
+        result += object { fun run() = x }.run()
+    }
+    return result
+}

compiler/testData/codegen/box/ir/anonymousObjectInsideElvis.kt

@@ -0,0 +1,3 @@
+fun box(): String {
+    return (object { val r = "OK" } ?: null)!!.r
+}

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

@@ -13789,6 +13789,16 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/ir"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JVM, true);
         }
 
+        @TestMetadata("anonymousObjectInForLoopIteratorAndBody.kt")
+        public void testAnonymousObjectInForLoopIteratorAndBody() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt");
+        }
+
+        @TestMetadata("anonymousObjectInsideElvis.kt")
+        public void testAnonymousObjectInsideElvis() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInsideElvis.kt");
+        }
+
         @TestMetadata("classInitializers.kt")
         public void testClassInitializers() throws Exception {
             runTest("compiler/testData/codegen/box/ir/classInitializers.kt");

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

@@ -13789,6 +13789,16 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/ir"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JVM, true);
         }
 
+        @TestMetadata("anonymousObjectInForLoopIteratorAndBody.kt")
+        public void testAnonymousObjectInForLoopIteratorAndBody() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt");
+        }
+
+        @TestMetadata("anonymousObjectInsideElvis.kt")
+        public void testAnonymousObjectInsideElvis() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInsideElvis.kt");
+        }
+
         @TestMetadata("classInitializers.kt")
         public void testClassInitializers() throws Exception {
             runTest("compiler/testData/codegen/box/ir/classInitializers.kt");

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

@@ -12674,6 +12674,16 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/ir"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JVM_IR, true);
         }
 
+        @TestMetadata("anonymousObjectInForLoopIteratorAndBody.kt")
+        public void testAnonymousObjectInForLoopIteratorAndBody() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt");
+        }
+
+        @TestMetadata("anonymousObjectInsideElvis.kt")
+        public void testAnonymousObjectInsideElvis() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInsideElvis.kt");
+        }
+
         @TestMetadata("classInitializers.kt")
         public void testClassInitializers() throws Exception {
             runTest("compiler/testData/codegen/box/ir/classInitializers.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java

@@ -11014,6 +11014,16 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/ir"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JS_IR, true);
         }
 
+        @TestMetadata("anonymousObjectInForLoopIteratorAndBody.kt")
+        public void testAnonymousObjectInForLoopIteratorAndBody() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt");
+        }
+
+        @TestMetadata("anonymousObjectInsideElvis.kt")
+        public void testAnonymousObjectInsideElvis() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInsideElvis.kt");
+        }
+
         @TestMetadata("classInitializers.kt")
         public void testClassInitializers() throws Exception {
             runTest("compiler/testData/codegen/box/ir/classInitializers.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -12169,6 +12169,16 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/ir"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.JS, true);
         }
 
+        @TestMetadata("anonymousObjectInForLoopIteratorAndBody.kt")
+        public void testAnonymousObjectInForLoopIteratorAndBody() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt");
+        }
+
+        @TestMetadata("anonymousObjectInsideElvis.kt")
+        public void testAnonymousObjectInsideElvis() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousObjectInsideElvis.kt");
+        }
+
         @TestMetadata("classInitializers.kt")
         public void testClassInitializers() throws Exception {
             runTest("compiler/testData/codegen/box/ir/classInitializers.kt");