Check we don't marshal out parameters in SizeParamIndex test (#27439)

* Check we don't marshal out parameters in SizeParamIndex test The test passes both uninitialized (null) and initialized values to native. We can add a check to ensure the initialized value doesn't get marshalled to native.
dotnet · Nov 7, 2019 · 3ef9c7b · 3ef9c7b
1 parent ff6f382
commit 3ef9c7b
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/tests/src/Interop/PInvoke/SizeParamIndex/PInvoke/helper.h b/tests/src/Interop/PInvoke/SizeParamIndex/PInvoke/helper.h
@@ -107,6 +107,13 @@ BOOL CheckAndChangeArrayByRef(T ** ppActual, T* Actual_Array_Size, SIZE_T Expect
 template<typename T>
 BOOL CheckAndChangeArrayByOut(T ** ppActual, T* Actual_Array_Size, SIZE_T Array_Size)
 {
+    if(*ppActual != NULL )
+    {
+        printf("ManagedtoNative Error in Method: %s!\n",__FUNCTION__);
+        printf("Array is not NULL");
+        return FALSE;
+    }
+
     *ppActual = (T*)CoreClrAlloc(sizeof(T)*Array_Size);
     *Actual_Array_Size = ((T)Array_Size);