commit 8d476cd6793c73cc6ac15a93a3d003733089eb2a
author JF Bastien <jfbastien@apple.com> Fri Jun 01 18:02:53 2018 +0000
committer JF Bastien <jfbastien@apple.com> Fri Jun 01 18:02:53 2018 +0000
tree 619a164dd96dd11ae311d35a9e877ae911d151a3
parent c8846cc9645e5e8c7a429bd6775c9580b509b367

Mark __c11_atomic_load as const

Summary:
C++11 onwards specs the non-member functions atomic_load and atomic_load_explicit as taking the atomic<T> by const (potentially volatile) pointer. C11, in its infinite wisdom, decided to drop the const, and C17 will fix this with DR459 (the current draft forgot to fix B.16, but that’s not the normative part).

This patch fixes the libc++ version of the __c11_atomic_load builtins defined for GCC's compatibility sake.

D47618 takes care of the clang side.

Discussion: http://lists.llvm.org/pipermail/cfe-dev/2018-May/058129.html

<rdar://problem/27426936>

Reviewers: EricWF, mclow.lists

Subscribers: christof, cfe-commits

Differential Revision: https://reviews.llvm.org/D47613

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@333776 91177308-0d34-0410-b5e6-96231b3b80d8