[Bug libstdc++/57691] freestanding libstdc++ has compile error

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57691
Bug 57691 depends on bug 57699, which changed state.

Bug 57699 Summary: Disable empty parameter list misinterpretation in libstdc++ 
headers when !defined(NO_IMPLICIT_EXTERN_C)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57699

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED