https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95359
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
Last reconfirmed| |2020-05-27
Ever confirmed|0 |1
Status|UNCONFIRMED |WAITING
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
With GCC you see:
gcc pr95359.c -c -O2 -Wall -Wextra
pr95359.c: In function ‘f’:
pr95359.c:3:22: warning: zero-length gnu_printf format string
[-Wformat-zero-length]
3 | __builtin_printf("", 2);
| ^~
or:
gcc pr95359.c -c -O2 -Wall -Wextra
pr95359.c: In function ‘f’:
pr95359.c:3:22: warning: too many arguments for format [-Wformat-extra-args]
3 | __builtin_printf("aa", 2);
| ^~~~
Does it really worth doing an optimization?
