[Bug c++/54930] Add warning switch for "returning reference to temporary" and similar

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54930



--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-15 
10:11:15 UTC ---

Great. Remember the docs.