http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49191
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2011.06.08 19:12:29 Ever Confirmed|0 |1 --- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-06-08 19:12:29 UTC --- > I get a warning on IA64 but none on X86. The warning is coming from > c-typeck.c. > > x.c: In function 'foo': > x.c:6:13: warning: cast increases required alignment of target type > [-Wcast-align] The warning is predicated on STRICT_ALIGNMENT being nonzero so this seems to be a good idea. You could add -Werror to get an error and test the exit code.