[Bug libstdc++/69310] [6 Regression] Revision r232454 breaks bootstrap on x86_64-apple-darwin15

[torvald at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69310

--- Comment #7 from torvald at gcc dot gnu.org ---
Does this patch fix the issue on Darwin?
https://gcc.gnu.org/ml/gcc-patches/2016-01/msg01452.html