https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85824
--- Comment #1 from Wanying Luo <wanyingloo at gmail dot com> --- Here's GDB backtrace at the time of crash. #0 0xf56fe7a0 in __lwp_sigqueue () from /lib/libc.so.1 #1 0xf56a1e90 in raise () from /lib/libc.so.1 #2 0xf567a274 in abort () from /lib/libc.so.1 #3 0xff2f2d70 in __gnu_cxx::__verbose_terminate_handler () at ../../../../libstdc++-v3/libsupc++/vterminate.cc:95 #4 0xff2ef844 in __cxxabiv1::__terminate (handler=0xff2f2bac <__gnu_cxx::__verbose_terminate_handler()>) at ../../../../libstdc++-v3/libsupc++/eh_terminate.cc:47 #5 0xff2ef8e8 in std::terminate () at ../../../../libstdc++-v3/libsupc++/eh_terminate.cc:57 #6 0xff2efc68 in __cxxabiv1::__cxa_rethrow () at ../../../../libstdc++-v3/libsupc++/eh_throw.cc:125 #7 0xff29c974 in std::collate<char>::do_transform (this=0xff34d9f8 <(anonymous namespace)::collate_c>, __lo=0x4fb3c "\200", __hi=0x4fb3d "") at /tmp/wluo/gcc-4.9.2/build/sparc-sun-solaris2.11/libstdc++-v3/include/bits/locale_classes.tcc:245 #8 0xff29c25c in std::collate<char>::transform (this=0xff34d9f8 <(anonymous namespace)::collate_c>, __lo=0x4fb3c "\200", __hi=0x4fb3d "") at /tmp/wluo/gcc-4.9.2/build/sparc-sun-solaris2.11/libstdc++-v3/include/bits/locale_classes.h:662 #9 0x0002ead4 in std::string std::regex_traits<char>::transform<char*>(char*, char*) const () #10 0x0002c634 in std::string std::regex_traits<char>::transform_primary<char*>(char*, char*) const () #11 0x000275f8 in std::__detail::_BracketMatcher<std::regex_traits<char>, false, false>::_M_apply(char, std::integral_constant<bool, false>) const () #12 0x00022bb4 in std::__detail::_BracketMatcher<std::regex_traits<char>, false, false>::_M_make_cache(std::integral_constant<bool, true>) () #13 0x0001ed70 in std::__detail::_BracketMatcher<std::regex_traits<char>, false, false>::_M_ready() () #14 0x0001f958 in void std::__detail::_Compiler<std::regex_traits<char> >::_M_insert_bracket_matcher<false, false>(bool) () #15 0x0001c630 in std::__detail::_Compiler<std::regex_traits<char> >::_M_bracket_expression() () #16 0x000192e8 in std::__detail::_Compiler<std::regex_traits<char> >::_M_atom() () #17 0x00017910 in std::__detail::_Compiler<std::regex_traits<char> >::_M_term() () #18 0x00015868 in std::__detail::_Compiler<std::regex_traits<char> >::_M_alternative() () #19 0x000141dc in std::__detail::_Compiler<std::regex_traits<char> >::_M_disjunction() () #20 0x0001381c in std::__detail::_Compiler<std::regex_traits<char> >::_Compiler(char const*, char const*, std::regex_traits<char> const&, std::regex_constants::syntax_option_type) () #21 0x00013340 in std::shared_ptr<std::__detail::_NFA<std::regex_traits<char> > > std::__detail::__compile_nfa<std::regex_traits<char> >(std::regex_traits<char>::char_type const*, std::regex_traits<char>::char_type const*, std::regex_traits<char> const&, std::regex_constants::syntax_option_type) () #22 0x0001307c in std::basic_regex<char, std::regex_traits<char> >::basic_regex<char const*>(char const*, char const*, std::regex_constants::syntax_option_type) () #23 0x00012d84 in std::basic_regex<char, std::regex_traits<char> >::basic_regex(char const*, std::regex_constants::syntax_option_type) () #24 0x000120d0 in main ()