[SDL] Unexplained segfault

[Ryan C. Gordon]

> #0  0xb7be2aed in getenv () from /lib/tls/i686/cmov/libc.so.6
> #1  0xb7e46e14 in X11_KeyToUnicode () from /usr/lib/libSDL-1.2.so.0
> #2  0xb7e429b9 in X11_KeyToUnicode () from /usr/lib/libSDL-1.2.so.0
> #3  0xb7e0e785 in SDL_PumpEvents () from /usr/lib/libSDL-1.2.so.0

Obviously, SDL_PumpEvents() isn't calling X11_KeyToUnicode() 
directly...can you try this with a debug build of SDL?

--ryan.