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changeset 5924:7e72ef843d73

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(__option_is_short): Check upper limit of __key. Isprint() requires its argument to have the value of an unsigned char or EOF.
author Sergey Poznyakoff <gray@gnu.org.ua>
date Thu, 16 Jun 2005 11:52:34 +0000
parents 280b8d19043c
children 38851977f22c
files lib/argp.h
diffstat 1 files changed, 2 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/lib/argp.h
+++ b/lib/argp.h
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <getopt.h>
+#include <limits.h>
 
 #define __need_error_t
 #include <errno.h>
@@ -579,7 +580,7 @@
   else
     {
       int __key = __opt->key;
-      return __key > 0 && isprint (__key);
+      return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
     }
 }