mozilla-thunderbird 1.0.8 with hardened compiler options fails silently at runtime (does not appear on-screen in X, just in ps output), although it manages to compile just fine. I've tried compiling with full hardened, with nossp (in case it was a SSP error like the Firefox bug), and with nosspnopie (just randomly). it fails to work in all those situations, yet mozilla-thunderbird-bin 1.0.8 works just fine, and compiling it with vanilla-compiler works just fine. I can attach strace dumps or take a go at it in gdb if required. any other information you may need, just ask and I'll get it to you ASAP.
http://sources.gentoo.org/viewcvs.py/gentoo-x86/eclass/mozconfig.eclass?r1=1.21&r2=1.22 try adding this and give us feedback. [[ $PN == mozilla-thunderbird ]] && filter-flags -fstack-protector
just tried emerging Mozilla Thunderbird 1.5.0.4 . seems to work fine with SSP and PaX enabled, and it seemed to have __guard symbols in everything. I think we can mark this one "resolved by upstream" if there is any outside confirmation.
Anarchy requests a new bug opened if you can duplicate.