id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
7143,xpressive: run time assertion when compiled with clang 3.1 and -std=c++0x,J.P.Fletcher@…,Eric Niebler,"Example code fails at run time with an assertion failure when compiled with -std=c++0x and not when compiled without -std=c++0x. System Ubuntu 10.04 64 bit, compiler Clang 3.1, -std=c++0x also uses libc++. 

boost_1_50_0/boost/xpressive/traits/cpp_regex_traits.hpp:273: void boost::xpressive::detail::cpp_regex_traits_base<char, 1>::imbue(const std::locale &) [Char = char, SizeOfChar = 1]: Assertion `0 == (this->masks_[i] & non_std_ctype_masks)' failed.

Example code attached.",Bugs,closed,To Be Determined,xpressive,Boost 1.50.0,Problem,fixed,xpressive runtime assertion C++11,eric@…