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Fix signedness bug in Cygwin code

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The Cygwin-specific pattern match code has a bug.  It checks
the size_t value returned by mbstowcs for being < 0.  The right
thing to do is to check against (size_t) -1.  Fix that.

Signed-off-by: Corinna Vinschen <vinschen@redhat.com>
This commit is contained in:
Corinna Vinschen 2022-01-21 03:22:56 +11:00 committed by Damien Miller
parent 2e5cfed513
commit 68085066b6
1 changed files with 2 additions and 2 deletions
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4
openbsd-compat/bsd-cygwin_util.c
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@ -194,11 +194,11 @@ _match_pattern(const char *s, const char *pattern)
size_t len;
int ret;
if ((len = mbstowcs(NULL, s, 0)) < 0)
if ((len = mbstowcs(NULL, s, 0)) == (size_t) -1)
return 0;
ws = (wchar_t *) xcalloc(len + 1, sizeof (wchar_t));
mbstowcs(ws, s, len + 1);
if ((len = mbstowcs(NULL, pattern, 0)) < 0)
if ((len = mbstowcs(NULL, pattern, 0)) == (size_t) -1)
return 0;
wpattern = (wchar_t *) xcalloc(len + 1, sizeof (wchar_t));
mbstowcs(wpattern, pattern, len + 1);