X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=CodingStyle;h=f4765ad8dc36e4e926830619c704f4c4a7897652;hb=7feb4503e0cacb8db445ed51593046d92d046473;hp=69df907a2367b6034b6686ce947531521b5eaf63;hpb=8fef8c7121222233075a03d57db7e0b48d5f6be5;p=openvswitch

diff --git a/CodingStyle b/CodingStyle
index 69df907a..f4765ad8 100644
--- a/CodingStyle
+++ b/CodingStyle
@@ -430,7 +430,9 @@ and
 precedence makes it necessary, or unless the operands are themselves
 expressions that use && and ||.  Thus:
 
-    if (!isdigit(s[0]) || !isdigit(s[1]) || !isdigit(s[2])) {
+    if (!isdigit((unsigned char)s[0])
+            || !isdigit((unsigned char)s[1])
+            || !isdigit((unsigned char)s[2])) {
         printf("string %s does not start with 3-digit code\n", s);
     }