id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1283	unsigned filesystem::system_error_type passed a negative value on windows	lazalong@…	Beman Dawes	"On windows in path.hpp system_error_type is defined as an unsigned:


{{{
# ifdef BOOST_WINDOWS_API
    typedef unsigned system_error_type;

    BOOST_FILESYSTEM_DECL
    errno_type lookup_errno( system_error_type sys_err_code );
# else
    typedef int system_error_type;

    inline errno_type lookup_errno( system_error_type sys_err_code )
      { return sys_err_code; }
# endif
}}}

This will cause warnings with mingw because in conveniance.hpp a negative value is assigned to it in the method '''create_directories''' on line 44-47:

{{{

           if ( !ph.empty() && !is_directory(ph) )
               boost::throw_exception( basic_filesystem_error<Path>(
                 ""boost::filesystem::create_directories"", ph, -1 ) );
}}}

Here is the warning message:
{{{

../../include/boost/filesystem/convenience.hpp: In function `bool boost::filesystem::create_directories(const Path&)':
../../include/boost/filesystem/convenience.hpp:46: warning: passing negative value `-0x000000001' for converting 3 of `boost::filesystem::basic_filesystem_error<Path>::basic_filesystem_error(const std::string&, const Path&, boost::filesystem::system_error_type) [with Path = boost::filesystem::path]'
}}}
"	Bugs	closed	Boost 1.35.0	filesystem	Boost 1.34.1	Cosmetic	fixed