bug#6035: M-x gdb crashes

[Arni Magnusson]

When there is no .emacs file, M-x gdb works fine.

When the .emacs file defines a keybinding for C-x C-a, for example,

  (global-set-key [?\C-x ?\C-a] 'align)

then M-x gdb crashes with the following error message:

  Key sequence C-x C-a C-l starts with non-prefix key C-x C-a

The Emacs documentation indicates that users are allowed to bind C-x C- 
keystrokes to functions that they use in their work. Most likely, M-x gdb 
can be implemented so that it doesn't crash with the above example.

Arni