Re: Emacs mode for GDB - questions

[Richard Stallman]

    The main feature that I have added is machine code level debugging. 
Breakpoints
    can be set at addresses and icons are displayed.

It is a useful feature.

    2) Is it possible to change Emacs to have more than one overlay arrow 
    (buffer-local) ? Would this be difficult ?

I am sure we can do it if that is the best way to handle this.
However, maybe you can do it using display margins without changing
the C code.