Re: [PATCH 0/1] MR8342: user32/tests: Make sure testtext has enough null bytes at the end.

[Yuxuan Shui (＠yshui)]

On Tue Jun 17 16:51:10 2025 +0000, Nikolay Sivov wrote:
> I can only look at this as a way to silence the failure. Could you
> explain where it fails in code exactly?

In `test_aw_conversion_dlgproc` we set DLGPROC to `test_aw_conversion_dlgprocA`, then we set "test_mode" to `DLGPROCTEXT_DLGPROCA`, and call `DefDlgProcA(hdlg, WM_SETTEXT, 0, (LPARAM)testtext)`.

So `testtext` gets passed as-is to `test_aw_conversion_dlgprocA`, which then passes it directly to `DefWindowProcW`. Since `DefWindowProcW` wants a wide string, it goes out-of-bound trying to `lstrlenW` it.