[Bug c++/65656] __builtin_constant_p should always be constexpr

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65656

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Apr 28 14:43:59 2015
New Revision: 222531

URL: https://gcc.gnu.org/viewcvs?rev=222531&root=gcc&view=rev
Log:
        PR c++/65656
        * constexpr.c (cxx_eval_builtin_function_call): Fix
        __builtin_constant_p.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-builtin3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c