Re: [RFA/RFC] QUIT doesn't seem to be working !?

[Andrew Cagney <cagney@gnu.org>]

>>Yes.  I did a quick user poll over lunch and everyone indicated that 
>>> contrl-c "works for me" (the sample included heavy java and C++ users!).
> 
> 
> I am a bit surprised by this, because, as far as I can remember, I
> couldn't understand how this feature could work (no offense meant,
> just to say that it appeared that this functionality was not just
> broken under certain circumstances, but instead was never working).

So was I - a more exact quote of the response was "It's broken!?!?".  It 
turns out that cntrl-c is being polled sufficiently often for people to 
not notice that there is a problem vis:

(gdb) set height 2
(gdb) info frame
Stack level 0, frame at 0x7fffe5c0:
---Type <return> to continue, or q <return> to quit---Quit

 > For me, Control-C is working when the debugger is waiting for an event
 > from the inferior. However, it is not working when the debugger is
 > busy inside a greedy loop (ie the QUIT macro does not abort the
 > loop).

Just don't try this at home:

(gdb) while 1
end

(but I suspect that's always been broken as well).

Andrew