[libcxx-commits] [libcxxabi] [libc++abi] Don't do pointer arithmetic on nullptr (PR #119520)

[Fangrui Song via libcxx-commits]

MaskRay wrote:

> Fixes [lab.llvm.org/buildbot#/builders/85/builds/3200/steps/10/logs/stdio](https://lab.llvm.org/buildbot/#/builders/85/builds/3200/steps/10/logs/stdio)

The build bot link will expire. Can you replace this with concrete configuration? 
I guess it is when building libc++abi with -fsanitize=pointer-overflow (part of -fsanitize=undefined)

https://github.com/llvm/llvm-project/pull/119520