[all-commits] [llvm/llvm-project] a77905: scudo: Shrink secondary header and cache entry siz...

[pcc via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a7790508522fc277963df974dc953077778e3c11
      https://github.com/llvm/llvm-project/commit/a7790508522fc277963df974dc953077778e3c11
  Author: Peter Collingbourne <peter at pcc.me.uk>
  Date:   2020-12-09 (Wed, 09 Dec 2020)

  Changed paths:
    M compiler-rt/lib/scudo/standalone/secondary.h

  Log Message:
  -----------
  scudo: Shrink secondary header and cache entry size by a word on Linux. NFCI.

Normally compilers will allocate space for struct fields even if the
field is an empty struct. Use the [[no_unique_address]] attribute to
suppress that behavior. This attribute that was introduced in C++20,
but compilers that do not support [[no_unique_address]] will ignore
it since it uses C++11 attribute syntax.

Differential Revision: https://reviews.llvm.org/D92966