[boost] [filesystem.v3] v1.49 Path constructor issue in VS Debug configuration

Subject: [boost] [filesystem.v3] v1.49 Path constructor issue in VS Debug configuration
From: Fraser Hutchison (fraser.hutchison_at_[hidden])
Date: 2012-03-11 06:46:36

Hello,

The changes made to filesystem/v3/src/path.cpp between v1.48 and v1.49 
seem to be causing a crash if I initialise a path as e.g. a global 
variable or as a static class member, but only for a Debug build.  (I'm 
using VS10 on 64-bit Win 7).  The following program exhibits this behaviour:

|#include "boost/filesystem/v3/path.hpp"
boost::filesystem::path p("p");
int main() { return 0; }
|
In Debug, I can see that the third path constructor calls |codecvt()|, 
which calls |wchar_t_codecvt_facet()|, which returns |codecvt_facet|.  
However, |codecvt_facet| hasn't been initialised at this point.  This 
appears to only be the case for Debug builds though.

I'm unclear as to whether this is an MSVC bug though.  I thought that 
the Standard required |codecvt_facet| to have been initialised before 
|wchar_t_codecvt_facet()| since it comes earlier in the same translation 
unit.

Could someone please clarify whether I should file a bug report with 
boost please?

Thanks,

Fraser.