[PATCH] D53207: Fix bug 26547 - alignof should return ABI alignment, not preferred alignment

[Nicole Mazzuca via Phabricator via cfe-commits]

ubsan added a comment.

The ABI breakage was already there, in the difference between GCC and Clang

- if one compiles against libc++ with gcc, it is not compatible with things

that are compiled with clang. I frankly think that being ABI compatible
with gcc (and correct according to the standard) is far more important than
being ABI compatible with previous versions of clang - if people need the
ABI compatibility, they can and should use `-fclang-abi-compat`


Repository:
  rL LLVM

https://reviews.llvm.org/D53207