Why don't wide characters work with libstdc++?
The wide-character parts of the GCC Standard C++ Library (libstdc++) have not yet been fully ported to Windows, so you cannot use most of these features with MinGW. If you try to use things like
then you will probably get compiler or linker errors.
This has been discussed frequently on the mailing lists; e.g. see:
If you really need these features then one alternative is to use the STLPort library from http://www.stlport.org/  instead of libstdc++.