[llvm-branch-commits] [clang] [clang] [sanitizer] add pseudofunction to indicate array-bounds check (PR #128977)

[Dan Liew via llvm-branch-commits]

https://github.com/delcypher approved this pull request.

Thanks for explaining the purpose.

Regarding the "more easily see why we crashed." please be aware [I have a GSoC proposal to basically do this](https://discourse.llvm.org/t/clang-gsoc-2025-usability-improvements-for-trapping-undefined-behavior-sanitizer/84568) using the `createTrapFailureMessageFor`. So if possible please don't tackle what I describe in the proposal before a GSoC student has had a chance to do this. To be clear what you've done in this PR is different from I'm proposing so they don't conflict.

Also

* Please give a chance for Clang Debug Info contributors to look over this (CC @adrian-prantl) before landing this.
* When possible add as reviewers previous people who worked on the code. In this particular case I believe this was @ahatanak 

https://github.com/llvm/llvm-project/pull/128977