https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64441
--- Comment #1 from Tim Shen <timshen at gcc dot gnu.org> --- Author: timshen Date: Wed Dec 31 10:27:41 2014 New Revision: 219121 URL: https://gcc.gnu.org/viewcvs?rev=219121&root=gcc&view=rev Log: PR libstdc++/64441 * include/bits/regex.tcc (__regex_algo_impl): s/auto/auto&/. * include/bits/regex_executor.tcc (_Executor<>::_M_dfs): Likewise. Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/regex.tcc trunk/libstdc++-v3/include/bits/regex_executor.tcc