https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84087
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Thu May 3 15:01:20 2018 New Revision: 259895 URL: https://gcc.gnu.org/viewcvs?rev=259895&root=gcc&view=rev Log: PR libstdc++/84087 add default arguments to basic_string members (LWG 2268) This change was a DR against C++11 and so should have been implemented years ago. PR libstdc++/84087 LWG DR 2268 basic_string default arguments * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI=1] (append(const basic_string&, size_type, size_type) (assign(const basic_string&, size_type, size_type) (insert(size_type, const basic_string&, size_type, size_type) (replace(size_type,size_type,const basic_string&,size_type,size_type) (compare(size_type,size_type,constbasic_string&,size_type,size_type)): Add default arguments (LWG 2268). [_GLIBCXX_USE_CXX11_ABI=0] (append(const basic_string&, size_type, size_type) (assign(const basic_string&, size_type, size_type) (insert(size_type, const basic_string&, size_type, size_type) (replace(size_type,size_type,const basic_string&,size_type,size_type) (compare(size_type,size_type,constbasic_string&,size_type,size_type)): Likewise. * testsuite/21_strings/basic_string/dr2268.cc: New test. Added: trunk/libstdc++-v3/testsuite/21_strings/basic_string/dr2268.cc Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/basic_string.h