[all-commits] [llvm/llvm-project] 3e1cb0: [CodeGen][MSan] Don't use offsets of zero-sized fi...

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3e1cb0db8a79b19996fcea210b639fe513a5eaf3
      https://github.com/llvm/llvm-project/commit/3e1cb0db8a79b19996fcea210b639fe513a5eaf3
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2020-12-07 (Mon, 07 Dec 2020)

  Changed paths:
    M clang/lib/CodeGen/CGClass.cpp
    M clang/test/CodeGenCXX/sanitize-dtor-zero-size-field.cpp

  Log Message:
  -----------
  [CodeGen][MSan] Don't use offsets of zero-sized fields

Such fields will likely have offset zero making
__sanitizer_dtor_callback poisoning wrong regions.
E.g. it can poison base class member from derived class constructor.

Differential Revision: https://reviews.llvm.org/D92727