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Status of C++0x char16_t/char32_t support

The support of C++0x char16_t and char32_t is experimental, mostly does not work and not intended to be used in production with current latest compilers: GCC-4.5, MSVC10 till major compiler's flaws would be fixed.

GNU GCC 4.5/C++0x Status

GNU C++ compiler provides decent support of C++0x characters however:

  1. Standard library does not install any std::locale::facets for this support so any attempt to format numbers using char16_t or char32_t streams would just fail.
  2. Standard library misses specialization for required char16_t/char32_t locale facets, so "std" backends is not build-able as essential symbols missing, also codecvt facet can't be created as well.

Visual Studio 2010 (MSVC10)/C++0x Status

MSVC provides all required facets however:

  1. Standard library does not provide installations of std::locale::id for these facets in DLL so it is not usable with /MD, /MDd compiler flags and requires static link of the runtime library.
  2. char16_t and char32_t are not distinct types but rather aliases of unsigned short and unsigned types which contradicts to C++0x requirements making it impossible to write char16_t/char32_t to stream and causing multiple faults.