------- 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