At first glance firefox uses the arithmetic pointer and Wno-pointer-arith lifts warnings or errors when used. This is what gcc says : error: pointer of type 'void *' used in arithmetic
What it gives without this flag and Is there a particular reason for using this one ? Regards, On Mon, Feb 6, 2012 at 2:39 PM, Florian Philipp <li...@binarywings.net>wrote: > Am 06.02.2012 05:56, schrieb Michael Mol: > > On Fri, Feb 3, 2012 at 8:52 PM, Grant <emailgr...@gmail.com> wrote: > >> Does anyone have any ideas on this? I just completed an emerge -e > >> world so I don't think anything needs to be re-emerged. Everything > >> compiles fine except for gcc-4.5.3-r1 (I'm on gcc-4.3.4) and > >> firefox-9.0: > >> > >> > /var/tmp/portage/www-client/firefox-9.0/work/mozilla-release/js/src/jsgcchunk.cpp: > >> In function 'void* MapAlignedPages(size_t, size_t)': > >> > /var/tmp/portage/www-client/firefox-9.0/work/mozilla-release/js/src/jsgcchunk.cpp:243: > >> error: pointer of type 'void *' used in arithmetic > >> > /var/tmp/portage/www-client/firefox-9.0/work/mozilla-release/js/src/jsgcchunk.cpp:243: > >> error: pointer of type 'void *' used in arithmetic > > > > That looks like a change in how the compiler treats bad code, or the > > introduction of bad code in an updated version of Firefox. The > > compiler can't sanely do pointer arithmetic without knowing the > > pointer type. Looks like the version you're compiling with throws an > > error on that. > > > > Are using anything like -Werror and/or -Wall in your CFLAGS? > > > > > > > > > > Yes, enabling --Wno-pointer-arith should help. > > Regards, > Florian Philipp > >
