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To: cygwin AT cygwin DOT com
From: jojelino <jojelino AT gmail DOT com>
Subject: Re: SIGQUIT reported as SIGSEGV
Date: Tue, 30 Apr 2013 23:17:25 +0900
Lines: 27
Message-ID: <klojpi$hhv$1@ger.gmane.org>
References: <CABWu70G4kLJioA4+E3usOZ_TZpRT1iN5v0ZuAFKy3UyqSHt=jw AT mail DOT gmail DOT com> <op DOT wwctdg0wofd6j1 AT nebbiolo DOT upc DOT de>
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In-Reply-To: <op.wwctdg0wofd6j1@nebbiolo.upc.de>

On 2013-04-30 PM 9:37, Helmut Karlowski wrote:
> Daniel R. Grayson, 30.04.2013 14:11:19:
>
>> SIGQUIT is erroneously delivered as SIGSEGV in this circumstance:
>>
>>     $ sleep 1000 &
>>     [1] 9148
>>     $ kill -QUIT %1
>>     $    < press return if necessary here >
>>     [1]+  Segmentation fault      (core dumped) sleep 1000
>
> It's sleep.exe that crashes, the report is correct.
>
> Stack trace:
> Frame     Function  Args
> 0022AAC8  7C80A115  (00000003, 0022AB2C, 00000000, FFFFFFFF)
>
--- Process 7188, exception C0000005 at 6102F813
sh-4.1$ addr2line -e /bin/cygwin1.dbg
6102F813
/netrel/src/cygwin-snapshot-20130409-1/winsup/cygwin/exceptions.cc:252

It's long-standing bug during stack backtrace in cygwin. if any frame 
has used ebp for purposes other than frame pointer. which is mostly the 
case.
-- 
Regards.


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