[all-commits] [llvm/llvm-project] 10b015: [flang][HLFIR] Fix use-after-free when rewriting u...

[Krzysztof Parzyszek via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 10b01563da1d7c98d5fff6aa8b4a78be56a8099d
      https://github.com/llvm/llvm-project/commit/10b01563da1d7c98d5fff6aa8b4a78be56a8099d
  Author: Krzysztof Parzyszek <Krzysztof.Parzyszek at amd.com>
  Date:   2024-03-08 (Fri, 08 Mar 2024)

  Changed paths:
    M flang/lib/Optimizer/HLFIR/IR/HLFIROps.cpp

  Log Message:
  -----------
  [flang][HLFIR] Fix use-after-free when rewriting users in `canonicalize` (#84371)

Rewriting an op can invalidate the operator range being iterated on.
Store the users in a separate list, and iterate over the list instead.

This was detected by address sanitizer.



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