(FOLD): Do not assume that characters are unsigned.

2000-10-31 06:02:53 +00:00
parent 04182eb50c
commit 731cf2666a
1 changed files with 3 additions and 1 deletions
--- a/lib/fnmatch.c
+++ b/lib/fnmatch.c
@@ -61,7 +61,9 @@ fnmatch (const char *pattern, const char *string, int flags)
  register char c;

 /* Note that this evaluates C many times.  */
-# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
+# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER ((unsigned char) (c)) \
+                  ? tolower ((unsigned char) (c)) \
+                  : (c))

  while ((c = *p++) != '\0')
    {