llvm clang on apple gives unexpected results in some demo's and in blender

What steps will reproduce the problem?
1. Use an apple clang based compiler on a mac OS X based system
2. run ragdoll demo
3.

What is the expected output? What do you see instead?
Puppets drop to the floor and stay there

instead puppets drop to the floor then speed of in a random direction

What version of the product are you using? On what operating system?
2.82 and 3.0 master from github.

Please provide any additional information below.
disabling SIMD in btSalar.h provides a workaround for the problem.

Original issue reported on code.google.com by martijn....@gmail.com on 16 Mar 2014 at 3:53

xiangaodielian / bullet

llvm clang on apple gives unexpected results in some demo's and in blender #799