Detect EAF flags in ipa-modref

[Jan Hubicka]

> Hi Jan,
> 
> >> I'm seeing the same on both i386-pc-solaris2.11 and
> >> sparc-sun-solaris2.11, so I don't think there are special configure
> >> flags involved.
> >
> > When I configure with ../configure --enable-languages=go my build
> > eventually finishes fine on curren trunk:
> [...]
> > On Debian SLES machines.  Having preprocessed go-diagnostics.cc and
> > .uninit1 dump would probably help.
> 
> apart from go/diagnostics.cc, I see the warning several times in
> libstdc++, but only for the 32-bit multilib.
> 
> Try building either for i686-pc-linux-gnu or a bi-arch
> x86_64-pc-linux-gnu build.

My build is bi-arch.  I will check libstdc++ warnings, but we had some
such warnings previously there too (plus we have tons of uninitialized
warnings with LTO bootstrap).

This really may depend on glibc headers and how string functions get
expanded.  This is why I think having preprocessed diagnotics.cc
should help.

Honza
> 
> 	Rainer
> 
> -- 
> -----------------------------------------------------------------------------
> Rainer Orth, Center for Biotechnology, Bielefeld University