| 8000042 is the output of printf("%d\n", __apple_build_version__) , which is supposed to be several years newer than Apple Clang 6.02, but fails with the aliasing-related error: vectorf128.h:237:22: error: ambiguous conversion for functional-style cast from 'const Vec4fb' to 'Vec4ib'
return Vec4fb( ! Vec4ib(a)); It's possible that it worked in 6.02 but then was broken again in some subsequent version. Apple's clang builds are available from https://opensource.apple.com/, so it might be possible to test this on a non OS-X system, although I haven't checked to see if they'll build on my system or not. Hopefully some enterprising person has time to figure out which versions have broken aliasing. |
Apple Clang version check unreliable new - Cosmin Deaconu - 2017-05-09
Apple Clang version check unreliable new - Agner - 2018-04-06