Cleanup isdigit() warnings.

[openvswitch] / CodingStyle

diff --git a/CodingStyle b/CodingStyle
index 69df907a2367b6034b6686ce947531521b5eaf63..f4765ad8dc36e4e926830619c704f4c4a7897652 100644 (file)
--- 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);
     }