[Bug c++/52119] [C++11] overflow in signed left shift isn't diagnosed

[jyasskin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52119

--- Comment #14 from Jeffrey Yasskin <jyasskin at gcc dot gnu.org> ---
Whoops, I missed your comment 7 where you already knew the history. Sorry.