http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58886
--- Comment #4 from Tim Shen <timshen at gcc dot gnu.org> --- (In reply to Paolo Carlini from comment #3) > Do we have any idea about Visual C++ and clang++? If this kind of extension > is really popular we may want to include it under gnu++11 only, like we did > another time. Both Visual Studio 2013 RC and clang 3.4 (with libc++) don't support "(?s)".
