http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56437
--- Comment #3 from Thomas Neumann <tneumann at pi3 dot informatik.uni-mannheim.de> 2013-02-25 06:31:43 UTC --- (In reply to comment #1) > This is hardly the only C++11 allocator requirement missing from std::string, > ALL of the new requirements are missing, and unlikely to be implemented until > we switch to a non-COW string implementation. Well, but this would be an allocator requirement that is easy to fix. There are only three places with "_Alloc()" in basic_string.tcc, and only two would have to be fixed as far as I can see it. I am not sure yet why the code even tries to construct the allocator, but if necessary we could use is_default_constructible to figure out of the constructor is available. I could try to produce a patch myself if you prefer. But as of new basic_string is quite unusable with stateful allocators.
