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Message-ID:	<52E0A694.8090304@users.sourceforge.net>
Date:	Wed, 22 Jan 2014 23:20:20 -0600
From:	"Yaakov (Cygwin/X)" <yselkowitz AT users DOT sourceforge DOT net>
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To:	cygwin AT cygwin DOT com
Subject:	Win8 issue with pthread_once in ctor? (Re: Is there someone who have a same problem ?)
References:	<CA+WgaY86qXwc9ywzjmU1x8B9WrpFnsQzFtvs6q5JLTRDFsEvHQ AT mail DOT gmail DOT com> <52DF5A6F DOT 2030509 AT users DOT sourceforge DOT net> <CA+WgaY-7sVhxcKyaY=FZpSbiG3JW8N+KHRAh=oXyh_A3bWeH5A AT mail DOT gmail DOT com> <52E03E99 DOT 9050205 AT users DOT sourceforge DOT net>
In-Reply-To:	<52E03E99.9050205@users.sourceforge.net>

On 2014-01-22 15:56, Yaakov (Cygwin/X) wrote:
>> I believe that there is a problem when p11-kit command runs on the
>> cygwin64 under Windows 8.
>
> Confirmed with a fresh Windows 8 x64 installation, but not with 8.1.
> I'll have to look into this further.

Here's what I've found so far:

So far only with Cygwin64 on Windows 8.0 x64 (but not with Cygwin32 even 
on 8.0 x64, nor with Cygwin64 on Windows 7 or 8.1), running any of the 
p11-kit commands in ca-certificates' postinstall under strace shows an 
exception c0000005 at 0x180134b75 immediately after loading 
/usr/lib/pkcs11/p11-kit-trust.so, which translates to:

$ addr2line -fp -e /usr/bin/cygwin1.dll 0x180134b75
verifyable_object_isvalid at 
/usr/src/debug/cygwin-1.7.27-2/winsup/cygwin/thread.cc:144

And eventually on a call to that function:

verifyable_object_isvalid (objectptr=objectptr AT entry=0x239c68, 
magic=magic AT entry=3742232649, static_ptr1=static_ptr1 AT entry=0x0, 
static_ptr2=static_ptr2 AT entry=0x0, static_ptr3=static_ptr3 AT entry=0x0)
at /usr/src/debug/cygwin-1.7.27-2/winsup/cygwin/thread.cc:140
140   if((static_ptr1 && *object == static_ptr1) ||
144   if((*object)->magic != magic)
[Inferior 1 exited with code 030000000005]

Now the strange thing about this module is that it has a constructor 
which calls pthread_once() on a function which creates a recursive 
mutex, so just dlopen()ing is enough.  Unfortunately, my attempts to 
reproduce this with an STC have not been successful.

Corinna, cgf, any insights?


Yaakov


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