[PATCH] D11502: [UBSan] Fix isDerivedFromAtOffset on iOS ARM64

[Filipe Cabecinhas]

filcab added a comment.

I erred on the side of caution by being verbose in the commit message.
The problem is non-obvious and I want anyone who might think about removing that line to have no excuse (assuming they blame that line and see the commit ;-) ).

This might happen in other platforms too… :-)


http://reviews.llvm.org/D11502