http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59801
--- Comment #6 from Zhendong Su <su at cs dot ucdavis.edu> --- > *** This bug has been marked as a duplicate of bug 57258 *** Andrew, I'm confused. The two are different, right? 57258 is about a possible extra warning, and this one is about a missing warning. What did I miss? Thanks.