Stupid GCC
Apr. 27th, 2009 02:49 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
ewx$ cat t.c
#include <stdio.h>
int main(void) { return printf(""); }
$ gcc -Wall -c t.c
t.c: In function ‘main’:
t.c:2: warning: zero-length printf format string
$ gcc -Wall -Wno-format-zero-length -c t.c
$ gcc --version
gcc (Debian 4.3.2-1.1) 4.3.2
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Can anyone offer a plausible reason why:
- -Wformat-zero-length is on by default (i.e. implied by -Wformat and thus by -Wall)?
- Why it exists at all?
FTAOD, empty format strings are perfectly legitimate (and the GCC Manual knows this).
(no subject)
Date: 2012-03-13 02:22 pm (UTC)GCC bug
Date: 2012-04-04 05:04 pm (UTC)