Re: [Boost-users] filesystem::path threadsafe ?? (1.48) Options

Subject: Re: [Boost-users] filesystem::path threadsafe ?? (1.48) Options
From: Rob Riggs (rob_at_[hidden])
Date: 2011-12-27 10:46:31

On 12/27/2011 06:49 AM, Wolfgang Fertsak wrote:
> On 23.12.2011 16:45, Aris Basic wrote:
>> Here is the sample code that crashes every time
>
>
> I think the problem is in file filesystem/v3/source/path.cpp in method
>
>   const path::codecvt_type *& path::wchar_t_codecvt_facet()
>   {
>    static const std::codecvt<wchar_t, char, std::mbstate_t> *
>      facet(
> &std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t> >
>         (path_locale()));
>    return facet;
>   }
>
> This method is entered by multiple threads concurrently and the static 
> pointer "facet" gets initialized by the first thread (which takes some 
> time) but the other threads don't wait and just continue while facet 
> is a NULL pointer.
That's great detective work, Wolfgang.  Please file a Trac ticket with 
this information so that the maintainers can get this fixed.  This seems 
like a serious regression.

Rob