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Date: Fri, 12 Mar 2010 17:27:36 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Cygwin 1.7: Concurrency Issue with Shared State Initialization
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On Mar 12 16:48, Schmidt, Oliver wrote:
> Hi,
> 
> > Does the patch help?
> 
> As the issue is sporadic it's not that easy to come up with a conclusive
> answer...
> 
> I downloaded http://cygwin.com/snapshots/cygwin1-20100309.dll.bz2, 
> unpacked and renamed the DLL and used it as drop-in replacement to the
> 1.7.1 DLL.
> 
> I experienced three times by now the effect that echo.exe "hangs" without
> using significant CPU time. Attaching a MSVC debugger I could only find
> out that in all three cases the executable stays in this endless loop:
> 
> 7D6373D2  cmp         dword ptr ds:[7D6A0220h],edi 
> 7D6373D8  jne         7D628061 
> 7D6373DE  lea         eax,[ebp-28h] 
> 7D6373E1  push        eax  
> 7D6373E2  push        ebx  
> 7D6373E3  call        7D61CCB1 
> 7D6373E8  cmp         eax,ebx 
> 7D6373EA  jge         7D6373D2 

What about building the Cygwin DLL with debug symbols and using the GDB
debugger instead of MSVC?  The latter doesn't grok the Dwarf-2 debugging
format.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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