[all-commits] [llvm/llvm-project] fb2c76: [clang][bytecode] Fix comparing pointers pointing ...

[Timm Baeder via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fb2c7610e831646c5e01986306e8771730c937ff
      https://github.com/llvm/llvm-project/commit/fb2c7610e831646c5e01986306e8771730c937ff
  Author: Timm Baeder <tbaeder at redhat.com>
  Date:   2025-07-05 (Sat, 05 Jul 2025)

  Changed paths:
    M clang/lib/AST/ByteCode/Interp.h
    M clang/lib/AST/ByteCode/Pointer.cpp
    M clang/lib/AST/ByteCode/Pointer.h
    M clang/test/AST/ByteCode/literals.cpp
    M clang/test/AST/ByteCode/new-delete.cpp

  Log Message:
  -----------
  [clang][bytecode] Fix comparing pointers pointing to base classes (#146285)

In the attached test case, one pointer points to the `Derived` class and
one to `Base`, but they should compare equal. They didn't because those
two bases are saved at different offsets in the block. Use
`computeOffsetForComparison` not just for unions and fix it to work in
the more general cases.



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