> 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 ?
I'm having trouble following. I'm using: CFLAGS="-march=native -O2 -pipe" Should I try with different flags? - Grant >> >> 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
