[Bug sanitizer/78267] [7 Regression] libsanitizer breaks bootstrap on x86_64-apple-darwin16 at r241977

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78267

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-11-09
     Ever confirmed|0                           |1

--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Attaching untested fix.
> Dominique, could you try it?

Allow for ~2 hours.