Minor. Add regression test

#KT-45685 Fixed

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

@@ -18708,6 +18708,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @Test
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @Test
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {

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

@@ -0,0 +1,42 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+// IGNORE_BACKEND: WASM
+
+import kotlin.coroutines.*
+
+interface Flow<out T> {
+    suspend fun collect(collector: FlowCollector<T>)
+}
+
+interface FlowCollector<in T> {
+    suspend fun emit(value: T)
+}
+
+suspend inline fun <T> Flow<T>.collect(crossinline action: suspend (value: T) -> Unit): Unit =
+    collect(object : FlowCollector<T> {
+        override suspend fun emit(value: T) = action(value)
+    })
+
+fun builder(c: suspend () -> Unit) {
+    c.startCoroutine(Continuation(EmptyCoroutineContext) {
+        it.getOrThrow()
+    })
+}
+
+fun box(): String {
+    val flow: Flow<Result<String>> = object : Flow<Result<String>> {
+        override suspend fun collect(collector: FlowCollector<Result<String>>) {
+            collector.emit(Result.success("OK"))
+        }
+    }
+
+    var res = "FAIL"
+    builder {
+        flow.collect { result ->
+            result.onSuccess { text ->
+                res = text
+            }
+        }
+    }
+    return res
+}

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

@@ -18684,6 +18684,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @Test
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @Test
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {

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

@@ -18708,6 +18708,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @Test
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @Test
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {

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

@@ -15480,6 +15480,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxValueFromPlatformType.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java

@@ -13579,6 +13579,11 @@ public class IrJsCodegenBoxES6TestGenerated extends AbstractIrJsCodegenBoxES6Tes
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxValueFromPlatformType.kt");

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

@@ -12985,6 +12985,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxValueFromPlatformType.kt");

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

@@ -13050,6 +13050,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @TestMetadata("unboxValueFromPlatformType.kt")
         public void testUnboxValueFromPlatformType() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/unboxValueFromPlatformType.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/wasm/semantics/IrCodegenBoxWasmTestGenerated.java

@@ -7165,6 +7165,11 @@ public class IrCodegenBoxWasmTestGenerated extends AbstractIrCodegenBoxWasmTest
             runTest("compiler/testData/codegen/box/inlineClasses/unboxReceiverOnCallingMethodFromInlineClass.kt");
         }
 
+        @TestMetadata("unboxResultParameterWhenCapturingToCrossinlineLambda.kt")
+        public void testUnboxResultParameterWhenCapturingToCrossinlineLambda() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/unboxResultParameterWhenCapturingToCrossinlineLambda.kt");
+        }
+
         @TestMetadata("useInlineClassesInsideElvisOperator.kt")
         public void testUseInlineClassesInsideElvisOperator() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/useInlineClassesInsideElvisOperator.kt");