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

[redi at gcc dot gnu.org]

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

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The only major difference I see is that in the operator== case you make a call
to a PIC function in libstdc++.so, whereas strcmp can be inlined.

There's no temporary created though.