Minor, add regression test for KT-34766

compiler/testData/codegen/box/inlineClasses/whenWithSubject.kt

@@ -0,0 +1,20 @@
+inline class InlineLong(val value: Long)
+inline val Number.toInlineLong get() = InlineLong(this.toLong())
+
+fun box(): String {
+    val value = 0
+
+    val withoutSubject = when (value.toInlineLong) {
+        0.toInlineLong -> true
+        else -> false
+    }
+    if (!withoutSubject) return "Fail: without subject"
+
+    val withSubject = when (val subject = value.toInlineLong) {
+        0.toInlineLong -> true
+        else -> false
+    }
+    if (!withSubject) return "Fail: with subject"
+
+    return "OK"
+}

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

@@ -13003,6 +13003,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/inlineClasses/useThisInsideInlineClass.kt");
         }
 
+        @TestMetadata("whenWithSubject.kt")
+        public void testWhenWithSubject() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/whenWithSubject.kt");
+        }
+
         @TestMetadata("compiler/testData/codegen/box/inlineClasses/callableReferences")
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)

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

@@ -13003,6 +13003,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/inlineClasses/useThisInsideInlineClass.kt");
         }
 
+        @TestMetadata("whenWithSubject.kt")
+        public void testWhenWithSubject() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/whenWithSubject.kt");
+        }
+
         @TestMetadata("compiler/testData/codegen/box/inlineClasses/callableReferences")
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)

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

@@ -11883,6 +11883,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/inlineClasses/useThisInsideInlineClass.kt");
         }
 
+        @TestMetadata("whenWithSubject.kt")
+        public void testWhenWithSubject() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/whenWithSubject.kt");
+        }
+
         @TestMetadata("compiler/testData/codegen/box/inlineClasses/callableReferences")
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)

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

@@ -10298,6 +10298,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/useThisInsideInlineClass.kt");
         }
 
+        @TestMetadata("whenWithSubject.kt")
+        public void testWhenWithSubject() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/whenWithSubject.kt");
+        }
+
         @TestMetadata("compiler/testData/codegen/box/inlineClasses/callableReferences")
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)

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

@@ -11413,6 +11413,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/useThisInsideInlineClass.kt");
         }
 
+        @TestMetadata("whenWithSubject.kt")
+        public void testWhenWithSubject() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/whenWithSubject.kt");
+        }
+
         @TestMetadata("compiler/testData/codegen/box/inlineClasses/callableReferences")
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)