[Bug preprocessor/65238] [5 Regression] __has_attribute is not handled properly with -traditional-cpp.

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65238

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #4)
> well, I suppose, before digging deeper into fixing this, the question is
> "should __has_attribute/__has_cpp_attribute be enabled for traditional"?

I believe it should, e.g. __has_include works in traditional cpp.