glibc 2.1.1pre2 breaks libstdc++-v3 build

[Neil Booth]

Joseph S. Myers wrote:-

> I'll also suggest that warnings about what ISO C99 requires make sense
> only for C99-style variadic macros, not for GNU-style ones with named rest
> arguments.

OK, that's fair enough I think.

> That is, there should be no warning when named rest arguments
> are not used; if the macro was defined outside a system header, and
> pedantic warnings are on, there will already have been a warning at its
> definition.

Well, the warnings are not about the same thing.

Neil.