On Tue, 2010-02-02 at 15:21 -0500, Matthew Barnes wrote: > On Tue, 2010-02-02 at 15:00 -0500, Paul Smith wrote: > > On Tue, 2010-02-02 at 14:30 -0500, Jeffrey Stedfast wrote: > > > If you want to get warnings about the aliasing stuff, it seems that > > > -Wstrict-aliasing=2 is the one you want. > > > > Yep, as Jeff points out GCC does provide warnings; in fact, -Wall > > already includes -Wstrict-aliasing=3 which is the least aggressive > > level. Note this is another of those warnings (like variables used > > before initialized) which only can be seen when you build with > > optimization on. > > > > You should check the GCC docs for details before choosing a particular > > value. The problem is that these warnings can be false positives, > > that's why there are different levels of aggressiveness. > > Ah, good, thank you both. > > I'll see what the different levels produce and maybe file some cleanup > bugs about it.
Just another note (sorry!): annoyingly enough the warning is only active if you have -fstrict-aliasing enabled. So, if you've added -fno-strict-aliasing by default, no one will see these warnings unless they remove that flag even if you enable a higher -Wstrict-aliasing level. _______________________________________________ Evolution-hackers mailing list Evolutionemail@example.com http://mail.gnome.org/mailman/listinfo/evolution-hackers