[Bug bootstrap/81033] [8 Regression] Revision r249019 breaks bootstrap on darwin

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81033

--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Revision r249105 breaks bootstrap again, even with the patch in comment 4.