[Bug preprocessor/63662] __has_include is not implemented but it is defined, so "#ifdef __has_include" guards are ineffective in blocking usage of __has_include

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63662

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
> gcc-4.9 -c tst.c
>

works for me.  Also works on trunk for me.