[Bug c/60439] No warning for case overflow in switch statement.

[chengniansun at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60439

--- Comment #6 from Chengnian Sun <chengniansun at gmail dot com> ---
(In reply to Marek Polacek from comment #5)
> OK, reopening, sorry.  The "switch condition has boolean value" warning
> might make sense; I'll try to look into it after 4.9.

Thanks for considering it, Marek.