fix undefined behaviour of use of isalpha, isdigit and tolower - ii - irc it, simple FIFO based irc client
HTML git clone git://git.suckless.org/ii
DIR Log
DIR Files
DIR Refs
DIR README
DIR LICENSE
---
DIR commit 1411224b169b5a2d134111b068e17f3020753ca9
DIR parent bf06f141882477d60a9d30390dd9e43a49fccc11
HTML Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Mon, 16 Dec 2019 18:26:01 +0100
fix undefined behaviour of use of isalpha, isdigit and tolower
"The argument c must be EOF or representable as an unsigned char;
otherwise, the result is undefined."
Diffstat:
M ii.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
---
DIR diff --git a/ii.c b/ii.c
@@ -140,9 +140,9 @@ static void
channel_normalize_path(char *s)
{
for (; *s; s++) {
- if (isalpha(*s))
- *s = tolower(*s);
- else if (!isdigit(*s) && !strchr(".#&+!-", *s))
+ if (isalpha((unsigned char)*s))
+ *s = tolower((unsigned char)*s);
+ else if (!isdigit((unsigned char)*s) && !strchr(".#&+!-", *s))
*s = '_';
}
}