From: Paul Gofman Subject: [resend PATCH 1/3] Avoid undefined result in ntdll_wcstoumbs() in case of error. Message-Id: <20200626122655.1442167-1-pgofman@codeweavers.com> Date: Fri, 26 Jun 2020 15:26:53 +0300 Undefined result is due to RtlUnicodeToUTF8N() not setting output length on error which is a correct behaviour according to existing tests. 'Planet Zoo' is affected which passes NULL object name buffer to NtCreateFile(). Signed-off-by: Paul Gofman --- Supersedes 187879 - 187880. dlls/ntdll/locale.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dlls/ntdll/locale.c b/dlls/ntdll/locale.c index d6bde700e42..4f03e3881f0 100644 --- a/dlls/ntdll/locale.c +++ b/dlls/ntdll/locale.c @@ -769,7 +769,7 @@ DWORD ntdll_umbstowcs( const char *src, DWORD srclen, WCHAR *dst, DWORD dstlen ) */ int ntdll_wcstoumbs( const WCHAR *src, DWORD srclen, char *dst, DWORD dstlen, BOOL strict ) { - DWORD i, reslen; + DWORD i, reslen = 0; if (!unix_table.CodePage) RtlUnicodeToUTF8N( dst, dstlen, &reslen, src, srclen * sizeof(WCHAR) ); -- 2.26.2