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

[hjl.tools at gmail dot com]

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

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |zsojka at seznam dot cz

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 69399 has been marked as a duplicate of this bug. ***