Bug#621780: glxinfo SEGV with multiple screens

[Peter Samuelson <peter@p12n.org>]

[Cyril Brulebois]
> yeah, can't really reproduce that here. Any chance you could get a
> full backtrace with debugging symbols?

After rebuilding mesa-utils (sid) and mesa (experimental) with 'nostrip':

ii  libgl1-mesa-dev    7.10.1-1      A free implementation of the OpenGL API -- GLX development fil
ii  libgl1-mesa-dri    7.10.1-1      A free implementation of the OpenGL API -- DRI modules
ii  libgl1-mesa-glx    7.10.1-1      A free implementation of the OpenGL API -- GLX runtime
ii  mesa-utils         8.0.1-2       Miscellaneous Mesa GL utilities

(gdb) bt
#0  0x00007ffff76dadfb in XCreateDrawable (base=0x617650, xDrawable=<value optimized out>,
    drawable=<value optimized out>, modes=0x6343c0) at drisw_glx.c:94
#1  driCreateDrawable (base=0x617650, xDrawable=<value optimized out>, drawable=<value optimized out>, modes=0x6343c0)
    at drisw_glx.c:377
#2  0x00007ffff76db5f7 in driFetchDrawable (gc=0x64f9e0, glxDrawable=94371845) at dri_common.c:373
#3  0x00007ffff76da8aa in drisw_bind_context (context=0x64f9e0, old=<value optimized out>,
    draw=<value optimized out>, read=94371845) at drisw_glx.c:266
#4  0x00007ffff76ba71d in MakeContextCurrent (dpy=0x606010, draw=94371845, read=94371845, gc_user=0x64f9e0)
    at glxcurrent.c:263
#5  0x00000000004023c1 in print_screen_info (dpy=0x606010, scrnum=0, allowDirect=<value optimized out>,
    limits=<value optimized out>) at glxinfo.c:486
#6  0x0000000000402dd9 in main (argc=1, argv=<value optimized out>) at glxinfo.c:1255