[all-commits] [llvm/llvm-project] c09e51: [msan][NFCI] Add arg_size() assertions (#125907)

[Thurston Dang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c09e51ae97795bac9284e345d02532cd2d0bc1e3
      https://github.com/llvm/llvm-project/commit/c09e51ae97795bac9284e345d02532cd2d0bc1e3
  Author: Thurston Dang <thurston at google.com>
  Date:   2025-02-05 (Wed, 05 Feb 2025)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp

  Log Message:
  -----------
  [msan][NFCI] Add arg_size() assertions (#125907)

This prevents the handlers from being called with blatantly inappropriate intrinsics.

Currently, if the handlers are called with an intrinsic that doesn't have enough arguments, it may abort; that is bad, but visible. The more insidious risk is that a handler is called with an intrinsic that has more arguments than expected; that will not visibly fail.



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