http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55137
--- Comment #5 from Sebastian Huber <sebastian.hu...@embedded-brains.de>
2012-11-06 15:34:57 UTC ---
(In reply to comment #3)
> enum E { E1 = -1 + (int) (sizeof (int) - 1) };
> errors while it used to be accepted before.
> Dunno if that is valid or not.
> If it is valid, the series of foldings that result into the overflow are first
> folding sizeof (int) - 1UL into sizeof (int) + 18446744073709551615UL and
> later
> on conversion of -1 + (int) (sizeof (int) + 18446744073709551615UL) to
> -1 + (int) sizeof (int) + (int) 18446744073709551615UL.
Why is the ( ) ignored? The sizeof (int) - 1 is clearly an unsigned integer
which can be converted to a signed integer.
