[Bug libstdc++/59048] std::string operator== between std::string and const char* creates unecessary temporary object

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59048

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Indeed, I had a look to f and the correct operator== and compare are called, no
temporaries. By the way, type_traits<char> uses memcmp not strcmp.