https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66214
--- Comment #21 from Magnus Fromreide <gcc at magfr dot user.lysator.liu.se> --- Odd. I have just tried with a freshly built gcc and openssl-1.0.2d and the build still fails on line 351 (the definition of struct bn_gencb_st) On the other hand, I am running x86_64-linux, not osx.