Re: crash: memcpy, XChangeProperty, XSetTextProperty, XSetWMIconName, x_set_name_internal

[Richard M. Stallman]

    I'll try tomorrow when I'm back at this machine.  It would be useful
    for me if you or someone else could tell me the exact gdb commands I
    need to use.  My gdb knowledge is quite limited.

Please read the GDB manual so you can learn more of how to do this.
GDB is fairly straightfoward.