[PATCH] winmm: Cope with empty string in mciSendString
Bruno Jesus
00cpxxx at gmail.com
Tue Feb 28 22:18:20 CST 2017
From: Bruno Jesus <bjesus at codeweavers.com>
Signed-off-by: Bruno Jesus <bjesus at codeweavers.com>
---
dlls/winmm/mci.c | 3 +++
dlls/winmm/tests/mci.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/dlls/winmm/mci.c b/dlls/winmm/mci.c
index b8adea6..f772388 100644
--- a/dlls/winmm/mci.c
+++ b/dlls/winmm/mci.c
@@ -1343,6 +1343,9 @@ DWORD WINAPI mciSendStringW(LPCWSTR lpstrCommand, LPWSTR lpstrRet,
debugstr_w(lpstrCommand), lpstrRet, uRetLen, hwndCallback);
if (lpstrRet && uRetLen) *lpstrRet = '\0';
+ if (!lpstrCommand[0])
+ return MCIERR_MISSING_COMMAND_STRING;
+
/* format is <command> <device> <optargs> */
if (!(verb = HeapAlloc(GetProcessHeap(), 0, (strlenW(lpstrCommand)+1) * sizeof(WCHAR))))
return MCIERR_OUT_OF_MEMORY;
diff --git a/dlls/winmm/tests/mci.c b/dlls/winmm/tests/mci.c
index 9ff6c58..52790c8 100644
--- a/dlls/winmm/tests/mci.c
+++ b/dlls/winmm/tests/mci.c
@@ -198,7 +198,7 @@ static void test_mciParser(HWND hwnd)
buf[0]='z';
err = mciSendStringA("", buf, sizeof(buf), NULL);
- todo_wine ok(err==MCIERR_MISSING_COMMAND_STRING,"empty string: %s\n", dbg_mcierr(err));
+ ok(err==MCIERR_MISSING_COMMAND_STRING,"empty string: %s\n", dbg_mcierr(err));
ok(!buf[0], "error buffer %s\n", buf);
buf[0]='d';
--
2.9.3
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