[Bug bootstrap/57438] bootstrap fails on x86_64 darwin in stage2 linking cc1

[dhazeghi at yahoo dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57438

--- Comment #7 from Dara Hazeghi <dhazeghi at yahoo dot com> ---
(In reply to Jack Howarth from comment #6)
> I've opened radar://14005298, "linker crash when building FSF gcc with
> --disable-checking" with a standalone test case of the failing linkage of
> cc1.

Thanks a bunch!  make bootstrap-lean works fine with --enable-checking=release,
so the checking is definitely the cause here.