http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60838
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I actually don't think this is a bug. While C99/C11 say what you wrote about
Constant expressions, C89 says something else:
"Constant expressions shall not contain assignment, increment, decrement,
function-call, or comma operators, except when they are contained within the
operand of a sizeof operator."
And really:
int u = sizeof ((0 ? (3, 0) : 0) + 1);
issues no warnings even with -std=c89. The default is still -std=gnu89, so you
may want to use e.g. -std=gnu99.
