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Date:	Thu, 23 Jan 2014 11:32:09 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Win8 issue with pthread_once in ctor? (Re: Is there someone who have a same problem ?)
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On Jan 22 23:20, Yaakov (Cygwin/X) wrote:
> 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.
>=20
> Here's what I've found so far:
>=20
> 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:
>=20
> $ 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
>=20
> And eventually on a call to that function:
>=20
> verifyable_object_isvalid (objectptr=3Dobjectptr AT entry=3D0x239c68,
> magic=3Dmagic AT entry=3D3742232649, static_ptr1=3Dstatic_ptr1 AT entry=3D0x0,
> static_ptr2=3Dstatic_ptr2 AT entry=3D0x0,
> static_ptr3=3Dstatic_ptr3 AT entry=3D0x0)
> at /usr/src/debug/cygwin-1.7.27-2/winsup/cygwin/thread.cc:140
> 140   if((static_ptr1 && *object =3D=3D static_ptr1) ||
> 144   if((*object)->magic !=3D magic)
> [Inferior 1 exited with code 030000000005]
>=20
> 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.
>=20
> Corinna, cgf, any insights?

Except for the content of object apparently being off, no.  It would
be helpful to build p11-kit with debugging and without optimization
and then step right into it, otherwise it's pretty hard to say
anything useful.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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