ii

irc it, simple FIFO based irc client
git clone git://git.suckless.org/ii
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commit 1411224b169b5a2d134111b068e17f3020753ca9
parent bf06f141882477d60a9d30390dd9e43a49fccc11
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:
Mii.c | 6+++---
1 file changed, 3 insertions(+), 3 deletions(-)

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 = '_'; } }