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Date: Wed, 15 Jul 2015 10:24:42 -0400
From: Ken Brown <kbrown AT cornell DOT edu>
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To: cygwin AT cygwin DOT com
Subject: Re: TEST RELEASE: Cygwin 2.1.0-0.4
References: <20150705213417 DOT GH2918 AT calimero DOT vinschen DOT de> <70AD8D85-7D30-4894-857B-4FD12E55BBBE AT etr-usa DOT com> <55A58727 DOT 6060807 AT redhat DOT com> <55A5C073 DOT 1020401 AT cornell DOT edu> <20150715075117 DOT GA19844 AT calimero DOT vinschen DOT de> <20150715124404 DOT GP16720 AT calimero DOT vinschen DOT de>
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On 7/15/2015 8:44 AM, Corinna Vinschen wrote:
> On Jul 15 09:51, Corinna Vinschen wrote:
>> Hi guys,
>>
>> On Jul 14 22:07, Ken Brown wrote:
>>> Entering directory
>>> '/home/kbrown/src/cyglibsigsegv/libsigsegv-2.10-1.x86_64/build/tests'
>>> Test passed.
>>> PASS: sigsegv1.exe
>>> Test passed.
>>> PASS: sigsegv2.exe
>>> Doing SIGSEGV pass 1.
>>> Stack overflow 1 caught.
>>> Doing SIGSEGV pass 2.
>>> Stack overflow 2 caught.
>>> Test passed.
>>> PASS: sigsegv3.exe
>>> SKIP: stackoverflow1.exe
>>> SKIP: stackoverflow2.exe
>>
>> Any idea why these two tests have been skipped?  That means the
>> HAVE_STACK_OVERFLOW_RECOVERY autoconf test failed.  You removed cygwin
>> from the explicit
>>
>>    mingw* | cygwin*) sv_cv_have_stack_overflow_recovery=yes ;;
>>
>> which is the right thing to do, but that means CFG_LEAVE has been
>> set to leave-none.c, apparently.
>>
>> I haven't much time to look into that right now, but will later today if
>> you don't beat me to it.
>
> Got it.  What's needed is a Cygwin-specific fault-*.h file which exposes
> how to fetch the stack pointer register from mcontext_t.  As you can see
> from the plethora of fault-*.h files in the src subdir, this is highly
> system-specific anyway.
>
> Here's the set of files you need to rebuild libsigsegv for Cygwin 2.1.0,
> with all tests running and passing on i686 and x86_64.  No other patch
> is requied.

Great!  Thanks.

> So, who of you is going to maintain it?

I'll defer to Eric, but if he doesn't want it then I'll take it.

Ken

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