[Bug c/60090] For expression without ~, gcc -O1 emits "comparison of promoted ~unsigned with unsigned"

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60090

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #5)
> http://gcc.gnu.org/ml/gcc/2013-11/msg00253.html

Exactly.  I hope I can tackle at least a part of it in next stage 1.

> In those cases where folding helps to avoid false positives, it would be nice
> to be able to still fold on-demand or to delay the warnings until folding can 
> happen.

Sure.