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

[msebor at gcc dot gnu.org]

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

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |msebor at gcc dot gnu.org
         Resolution|---                         |FIXED

--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
Recent versions of G++ diagnose shifting into the sign bit (and reject it in
constexpr contexts) so this looks resolved:

warning: result of ‘(2 << 31)’ requires 34 bits to represent, but ‘int’ only
has 32 bits [-Wshift-overflow=]
 int n = 2 << 31;
         ~~^~~~~