bug#2556: 23.0.91; gdb-ui sometimes messes up window handling

[Noam Postavsky <npostavs@gmail.com>]

tags 2556 + unreproducible
quit

Miles Bader <miles.bader@necel.com> writes:

> This is an old bug with gdb-ui that seems to have been forgotten (but is
> still present though; it bites me regularly); the basic symptom is that
> sometimes when you type a command to a gud debugger prompt, and gud pops
> up an associated source code buffer, the source code buffer will be
> displayed in the same window where your gud session buffer was displayed,
> resulting in the gud buffer being hidden!
>
>
> Here's the test case I gave (starting with emacs -Q):
>
>      (1) start a gdb session in emacs, and hit a breakpoint or something so
>          that gdb pops up the source in another window (splitting the frame)
>
>      (2) Switch to the source window with "C-x o"
>
>      (3) Delete the other [*gud...*] window with "C-x 1"
>
>      (4) Switch back to the *gud...* buffer using "C-x b *gud...* RET"
>
>      (5) Try to pop up the source buffer again using a gdb command, e.g.,
>          just "frame RET".
>
>    *bang*, *gdb...* buffer disappears, source buffer is only ting
>    displayed... :-(

I'm not able to reproduce this in more recent Emacs versions (I've
tested back to 24.3).