[boost] [sun] [program_options] unicode tests

I see failure like this: http://tinyurl.com/3xqtvg that reads: "../libs/program_options/test/unicode_test.cpp", line 114: Warning (Anachronism): Undefined character escape sequence "\u". .... Assertion failed: option.value.front() == value, file ../libs/program_options/test/unicode_test.cpp, line 100 It seems like sun compiler does not support unicode escape characters? Any magic way to make it work? - Volodya