On 8/16/2012 2:37 PM, Christopher Faylor wrote:
> On Tue, Aug 14, 2012 at 12:48:03PM +0000, Adam Dinwoodie wrote:
>> Christopher Faylor wrote:
>>> On Fri, Aug 10, 2012 at 06:31:25AM +0000, Achim Gratz wrote:
>>>> Daniel Colascione writes:
>>>>> It works for me in bash.  I don't have tcsh installed, but I don't see why
>>>>> SIGINT would work differently there.
>>>>
>>>> Yes, it works in bash for me, too.  Tcsh does something that apparently
>>>> breaks with the new snapshot, but since I don't get any error messages, it's
>>>> hard to tell what that might be.
>>>
>>> You're not really giving us much to go on.  I've tried ping (both Windows and
>>> Cygwin version) under tcsh and both work fine.  And, the small snippet that
>>> you cut/paste in your original bug report clearly showed that ping was
>>> responding to CTRL-C.
>>
>> I'm still using this snapshot (I've had no reason to stop until now),
>> and have hit this issue two out of the last five times running Cygwin
>> ping.  The ping process is still visible in Process Explorer after
>> hitting ^C.  There's no obvious difference between when ^C terminates
>> the process and when it doesn't.
>
> I managed to duplicate this once a couple of days ago in a mintty/tcsh
> process but I had a very hard time consistently hitting it.  So I wrote
> a test case which ran ping repeatedly in a loop under mintty while another
> process killed it.  Eventually, I could duplicate the problem in a few
> minutes.  There were two problems, one illustrated by the "sigwaitinfo"
> mentioned in another thread and another caused by a race.
>
> After making some changes to signal handling, I ran the test case for an
> afternoon without issue.
>
> The current snapshot has these changes.

With the current snapshot (20120816 17:19:27), I have problems with 
emacs-X11.exe.  When I start it under X (by typing 'emacs&' in an xterm 
window), its CPU usage goes up to 50% and its window never displays. 
The attached file gives the result of attaching gdb and giving the 
command 'thread apply all bt full'.

I reproduced this running emacs under mintty, but it took longer for it 
to happen.

The problem doesn't occur with the 20120815 snapshot.

Ken