be very careful in case of signed chars

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lib/libc/stdlib/strtoul.c b/src/lib/libc/stdlib/strtoul.c
index 1522bec584..9d45c5cb9e 100644
--- a/src/lib/libc/stdlib/strtoul.c
+++ b/src/lib/libc/stdlib/strtoul.c
@@ -33,7 +33,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 /*static char *sccsid = "from: @(#)strtoul.c    5.3 (Berkeley) 2/23/91";*/
-static char *rcsid = "$Id: strtoul.c,v 1.2 1995/12/21 14:58:38 deraadt Exp $";
+static char *rcsid = "$Id: strtoul.c,v 1.3 1996/07/27 10:45:25 deraadt Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <ctype.h>
@@ -63,7 +63,7 @@ strtoul(nptr, endptr, base)
          */
         s = nptr;
         do {
-                c = *s++;
+                c = (unsigned char) *s++;
         } while (isspace(c));
         if (c == '-') {
                 neg = 1;
@@ -84,7 +84,7 @@ strtoul(nptr, endptr, base)
 
         cutoff = ULONG_MAX / (unsigned long)base;
         cutlim = ULONG_MAX % (unsigned long)base;
-        for (acc = 0, any = 0;; c = *s++) {
+        for (acc = 0, any = 0;; c = (unsigned char) *s++) {
                 if (isdigit(c))
                         c -= '0';
                 else if (isalpha(c))