http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46488
--- Comment #40 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-12-01 18:55:28 UTC --- > Maybe this should this be considered a problem in the sense that it > does not warn with -Wstrict-aliasing ? As in this case, httpd source > was patched to "correct" the warning, but the problem remained. The level 3 warning isn't guaranteed to catch all the cases, especially when one explicitly obfuscates the issue. :-) But, yes, worth taking a look.