https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70378
--- Comment #1 from Daniel Starke <daniel.f.starke at freenet dot de> --- No warning was observed when using g++ instead of gcc.
daniel.f.starke at freenet dot de Wed, 23 Mar 2016 09:30:08 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70378
--- Comment #1 from Daniel Starke <daniel.f.starke at freenet dot de> --- No warning was observed when using g++ instead of gcc.