[JS Legacy] Fix returning Char from suspend functions (KT-44221)

Mark translated expression with a proper type, like we do with
non-suspending calls, to coerce it later.

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

@@ -6853,6 +6853,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

compiler/testData/codegen/box/coroutines/kt44221.kt

@@ -0,0 +1,24 @@
+// WITH_RUNTIME
+
+import kotlin.coroutines.*
+
+fun launch(block: suspend () -> String): String {
+    var result = ""
+    block.startCoroutine(Continuation(EmptyCoroutineContext) { result = it.getOrThrow() })
+    return result
+}
+
+
+private class CharTest {
+    private val test: Char = '!'
+
+    fun simpleTest() = launch {
+        val ch = get()
+        if (ch == '!') "OK" else "Fail"
+    }
+
+    suspend fun get(): Char? = test
+}
+
+
+fun box(): String = CharTest().simpleTest()

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

@@ -6853,6 +6853,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

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

@@ -6853,6 +6853,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

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

@@ -6853,6 +6853,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

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

@@ -5658,6 +5658,11 @@ public class IrJsCodegenBoxES6TestGenerated extends AbstractIrJsCodegenBoxES6Tes
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

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

@@ -5658,6 +5658,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

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

@@ -5658,6 +5658,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/coroutines/kt42554.kt");
         }
 
+        @TestMetadata("kt44221.kt")
+        public void testKt44221() throws Exception {
+            runTest("compiler/testData/codegen/box/coroutines/kt44221.kt");
+        }
+
         @TestMetadata("lastExpressionIsLoop.kt")
         public void testLastExpressionIsLoop() throws Exception {
             runTest("compiler/testData/codegen/box/coroutines/lastExpressionIsLoop.kt");

js/js.translator/src/org/jetbrains/kotlin/js/translate/callTranslator/CallTranslator.kt

@@ -157,7 +157,7 @@ private fun translateFunctionCall(
             source = resolvedCall.call.callElement
         }))
         context.currentBlock.statements += statement
-        return context.createCoroutineResult(resolvedCall)
+        callExpression = context.createCoroutineResult(resolvedCall)
     }
     else {
         callExpression = callInfo.constructSafeCallIfNeeded(callExpression)