Vector Class Discussion

For now, as a workaround, we are now using a patched in-tree version with the clang version check reverted.

The most recent update to the vector class added a version check for Apple-provided clang compilers, which seems to cause issues for some users using OS X. Removing the version check (and just using the preprocessor workaround for clang's aliasing bugs) fixes it. The clang version reported by their compilers is 8000042.

If there are any Mac users out there who can contribute more to find out this problem then please let us know. The problem is that previous versions of Clang do not distinguish between the vector types __m128, __m128i and __m128f, but apparently Apple Clang version 6.2.something does. They don't respond to bug reports about this.

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.

I have the same issue with xCode 9.1 (9B55).
I get a lot of (For different types):

error: no instance of constructor "Vec2qb::Vec2qb" matches the argument list

Any idea?