Gentoo's Bugzilla –
Attachment 360430 Details for
Bug 487252=mail-client/thunderbird-17.0.9[lightning] - Segfault in cache allocation called by js::analyze::ScriptAnalysis::analyzeSSA in bitmap_set (run=0x7fffc87d3000, bin_info=0x639de0) at mozilla/memory/jemalloc/src/include/jemalloc/internal/bitmap.h:101