[PATCH v2] user32: When converting strings from A->W, ignore handles/resources

[Fabian Maurer]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51583
Signed-off-by: Fabian Maurer <dark.shadow4 at web.de>
---
 dlls/user32/tests/msg.c | 3 +++
 dlls/user32/winproc.c   | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/dlls/user32/tests/msg.c b/dlls/user32/tests/msg.c
index 9867e319d58..3be5ccfd651 100644
--- a/dlls/user32/tests/msg.c
+++ b/dlls/user32/tests/msg.c
@@ -15981,6 +15981,9 @@ static void test_desktop_winproc(void)

     DestroyWindow(hwnd);

+    /* Test invalid text with WM_SETTEXT. This must not crash. */
+    SendMessageA(GetDesktopWindow(), WM_SETTEXT, 0, (LPARAM)55);
+
 out_unregister:
     UnregisterClassA("TestDesktopClass", instance);
 }
diff --git a/dlls/user32/winproc.c b/dlls/user32/winproc.c
index 81fbcab928d..00b79b3b006 100644
--- a/dlls/user32/winproc.c
+++ b/dlls/user32/winproc.c
@@ -494,6 +494,8 @@ LRESULT WINPROC_CallProcAtoW( winproc_callback_t callback, HWND hwnd, UINT msg,
     case LB_ADDFILE:
     case EM_REPLACESEL:
         if (!lParam) ret = callback( hwnd, msg, wParam, lParam, result, arg );
+        else if (IS_INTRESOURCE(lParam)) /* Check for handles/IDs similar to DEFWND_SetTextA */
+            return 0;
         else
         {
             WCHAR *ptr, buffer[512];
--
2.33.0