Illegal instruction hmm.
Could you provide as much system info as you can.
It may help to open an issue on the overlay tracker, as its custom build of the runtime may be causing the issue https://github.com/anyc/steam-overlay/issues
I couldn't find your crash report here at Valve. Can you try this again to generate a new dump?
Closing as we need more info to proceed.
SDL_VIDEO_X11_DGAMOUSE=0x1 2013-07
New install on 32-bit Gentoo using steam-overlay (steam-meta package) overlay won't launch.
Tried a 'steam --reset', then launching with 'STEAM_DEBUG=1 steam':
Trying to launch with 'STEAM_RUNTIME=1 steam' doesn't work, either: