Re: [Boost-users] [program_options] Issues with boost::program_options freezing

From: Zachary Mark (zmark_at_[hidden])
Date: 2006-08-07 18:26:50

Vladimir Prus wrote:
> Zachary Mark <zmark <at> cleversafe.com> writes:
>
>   
>> Hello,
>>
>> Our application is using boost::program_options to parse commandline 
>> arguments.  We have found that when we perform our own builds of boost 
>> from source code, program_options freezes the application hard at 
>> variable points in the code (a step through in GDB confirms this).  
>> However, when we use pre-built binaries of the program_options library 
>> for any of our target OSes (Debian stable, Centos 4, Fedora 4) the 
>> application runs properly.
>>
>> We are also using the boost::thread library.  Are there thread safety or 
>> interaction issues between thread and program_options that I am not 
>> aware of?  We are using 1.32 due a change in the behavior of 
>> program_options in 1.33.  This script shows how we are building boost.
>>     
>
> You did not indicate where the library hangs (i.e. did  not provide a complete 
> backtrace). If it's in some threading-related function, it means that you're 
> using wrong version of the library. If you application is multi-threaded, you 
> must link to MT build of program_options. One important aspect of this is that 
> MT mode changes layout of shared_ptr, which is used in program_options public 
> interface, so mismatch in MT mode between the library and the program causes 
> sure problems.
>   
After some testing, I've determined that it is definitely a library 
mismatch (this is what I expected it to be, actually).  A straight up 
bjam build without the build script and then manually copying the 
appropriate library works fine.  Using the script-produced library 
produces the hang (I did a stack trace and it looks like it is getting 
hung up on a thread wait).  I'm not sure what the issue could be with 
the build script but it's no longer in Boost-land in terms of what is 
causing the hang.  Thanks for the assistance.

-- Zach