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Message-ID: <5314C8D3.6000300@cornell.edu>
Date: Mon, 03 Mar 2014 13:24:19 -0500
From: Ken Brown <kbrown@cornell.edu>
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To: cygwin@cygwin.com
Subject: Re: Building libsigsegv on Cygwin64
References: <530771A3.7000603@alice.it> <53136870.200@cornell.edu> <20140303150210.GC2469@calimero.vinschen.de> <20140303170628.GA7236@calimero.vinschen.de>
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On 3/3/2014 12:06 PM, Corinna Vinschen wrote:
> On Mar  3 16:02, Corinna Vinschen wrote:
>> On Mar  2 12:20, Ken Brown wrote:
>> [...]
>>> I found the problem (or at least I found *a* problem):  There's a
>>> configure test "checking whether a fault handler according to POSIX
>>> works", which passes on 32-bit Cygwin but fails on 64-bit Cygwin.
>>> I'm attaching a file containing the configure test.  Here's what
>>> happens in the 64-bit case:
>>>
>>> $ gcc -o fault fault.c
>>> $ ./fault.exe
>>> $ echo $?
>>> 1
>>>
>>> In the 32-bit case, the exit code is 0.
>>>
>>> I don't know if this indicates a Cygwin bug or something wrong with
>>> the test.
>>
>> It indicates a Cygwin bug.  Thanks for the report and the testcase.
>>
>> The joke here is, the signal handler function gets called twice for the
>> same exception.  Proof is that you can remove the second call to crasher
>> and still sigsegv_handler gets called twice.
>
> I just created a new snapshot which contains the fix.  Would you mind
> to test it?

It's fixed.  Thanks.

Ken


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