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@…