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

[howarth at nitro dot med.uc.edu]

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

--- Comment #3 from Jack Howarth <howarth at nitro dot med.uc.edu> ---
The trigger for this bug is the use of --disable-checking. The linker crash
doesn't occur when --enable-checking=release or --enable-checking=yes is passed
to configure instead.