[Bug c++/33738] -Wtype-limits misses a warning when comparing enums

Tue Nov 13 04:56:00 GMT 2007

------- Comment #2 from manu at gcc dot gnu dot org  2007-11-13 04:55 -------
(In reply to comment #1)
> Warnings from optimizers are semi a no-no.  Yes we have them for strict
> aliasing and overflow but I think those cases are a bit weird.  This is
> unspecified behavior no matter what and there is no flag to change the behavior
> here.

Well, Wtype-limits is supposed to warn about this and it doesn't. Can we do it
from the front-end? If not, then warning from the middle-end seems the right
thing to do as long as it is not complex/intrusive.

-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-11-13 04:55:56
               date|                            |

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33738