Re: Win8 issue with pthread_once in ctor? (Re: Is there someone who have a same problem ?)

[Christopher Faylor <cgf-use-the-mailinglist-please@cygwin.com>]

On Thu, Jan 23, 2014 at 11:32:09AM +0100, Corinna Vinschen wrote:
>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.
>> 
>> 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@entry=0x239c68,
>> magic=magic@entry=3742232649, static_ptr1=static_ptr1@entry=0x0,
>> static_ptr2=static_ptr2@entry=0x0,
>> static_ptr3=static_ptr3@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?
>
>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.

What she said.

cgf

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