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

[redi at gcc dot gnu.org]

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



--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-10-18 
18:30:40 UTC ---

patch posted for review http://gcc.gnu.org/ml/gcc-patches/2012-10/msg01737.html