[PATCH] D67122: [UBSan][clang][compiler-rt] Applying non-zero offset to nullptr is undefined behaviour

[Jordan Rupprecht via Phabricator via cfe-commits]

rupprecht added a comment.

> But TLDR, either the fix in https://github.com/google/filament/pull/1566
>  is incorrect and the actually-bad code is elsewhere,
>  or you have some other unsanitized UB elsewhere. Could be both :S

My money is on "both" :p

I tested a random sample of a couple thousand tests internally and ~1% of them failed, but when I looked at them, they were all coming from two separate widely used libraries. I fixed those, and I'll do a broader test now to see how bad the long tail of issues are.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D67122/new/

https://reviews.llvm.org/D67122