[PATCH] Fix signedness bug in Cygwin code

[Corinna Vinschen]

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 at redhat.com>
---
 openbsd-compat/bsd-cygwin_util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/openbsd-compat/bsd-cygwin_util.c b/openbsd-compat/bsd-cygwin_util.c
index 54628e2607b4..9ede21d243a2 100644
--- a/openbsd-compat/bsd-cygwin_util.c
+++ b/openbsd-compat/bsd-cygwin_util.c
@@ -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);
-- 
2.33.1