https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103664
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:364cb498c472790e14561f7672dc5ab4a9222287 commit r10-11462-g364cb498c472790e14561f7672dc5ab4a9222287 Author: Jonathan Wakely <jwak...@redhat.com> Date: Sun Dec 12 21:15:17 2021 +0000 libstdc++: Fix std::regex_replace for strings with embedded null [PR103664] The overload of std::regex_replace that takes a std::basic_string as the fmt argument (for the replacement string) is implemented in terms of the one taking a const C*, which uses std::char_traits to find the length. That means it stops at a null character, even though the basic_string might have additional characters beyond that. Rather than duplicate the implementation of the const C* one for the std::basic_string case, this moves that implementation to a new __regex_replace function which takes a const C* and a length. Then both the std::basic_string and const C* overloads can call that (with the latter using char_traits to find the length to pass to the new function). libstdc++-v3/ChangeLog: PR libstdc++/103664 * include/bits/regex.h (__regex_replace): Declare. (regex_replace): Use it. * include/bits/regex.tcc (__regex_replace): Replace regex_replace definition with __regex_replace. * testsuite/28_regex/algorithms/regex_replace/char/103664.cc: New test. (cherry picked from commit ef5d671cd80a4afa4f74c3dfe2904c63f51fcfde)
