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Date: Mon, 15 Apr 2013 18:37:02 +0100
From: Dave Korn <dave DOT korn DOT cygwin AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Debugging totally broken with latest everything?
References: <516C24C5 DOT 80107 AT gmail DOT com> <20130415171412 DOT GA3356 AT ednor DOT casa DOT cgf DOT cx>
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On 15/04/2013 18:14, Christopher Faylor wrote:
> On Mon, Apr 15, 2013 at 05:03:17PM +0100, Dave Korn wrote:
>>  Some notes on the above:
>>
>>  The same happens with both the previous version and current snapshot of the
>> cygwin dll.  It also happens with both current gdb and an old gdb
>> 6.8.0.20080328-cvs that I have lying around.
>>
>>  The hw.exe in question is your bog-standard hello world, compiled with "-g
>> -O0" using gcc4-4.5.3-3.
>>
>>  "kill -9" won't kill gdb; I have to use Windows task manager.  If I've
>> attached gdb to the hung gdb, I can kill it from there using the "k" instruction.
>>
>>  Anyone else having similar problems?
> 
> You're probably seeing a known bug in gdb where it no longer works well
> when run from a console window.  There is a race where gdb tries to get
> tty information from a stopped cygwin process.  Although I didn't
> introduce the problem, I have tried to fix it from time to time without
> much luck.

  It must be an interaction between gdb and the cygwin dll, since my
old-and-previously-working-just-fine-in-a-console gdb-6 has also stopped working.

> Debugging from mintty will probably work better.

  It certainly does.  Thanks for the tip.

    cheers,
      DaveK


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