ucrtbase: Add a test for snprintf to a NULL buffer.

Signed-off-by: Martin Storsjo <martin@martin.st> Signed-off-by: Piotr Caban <piotr@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ucrtbase: Add a test for snprintf to a NULL buffer.
5e2f6fa9 · Martin Storsjo · Alexandre Julliard · 78ce165f · 5e2f6fa9
Commit 5e2f6fa9 authored Nov 06, 2015 by Martin Storsjo Committed by Alexandre Julliard Nov 06, 2015
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printf.c dlls/ucrtbase/tests/printf.c +3 -0

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--- a/dlls/ucrtbase/tests/printf.c
+++ b/dlls/ucrtbase/tests/printf.c
@@ -156,6 +156,9 @@ static void test_snprintf (void)
        ok (buffer[valid] == '\0',
            "\"%s\": Missing null termination (ret %d) - is %d\n", fmt, n, buffer[valid]);
    }
+
+    ok (vsprintf_wrapper (UCRTBASE_PRINTF_STANDARD_SNPRINTF_BEHAVIOUR, NULL, 0, "abcd") == 4,
+        "Failure to snprintf to NULL\n");
 }

 static int __cdecl vswprintf_wrapper(unsigned __int64 options, wchar_t *str,