Align <atomic> with clang r163964 which disallows const _Atomic types. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@164004 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/atomic b/include/atomic index 6a200eb..6dffdb2 100644 --- a/include/atomic +++ b/include/atomic 
@@ -555,7 +555,7 @@  template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value>  struct __atomic_base // false  { - _Atomic(_Tp) __a_; + mutable _Atomic(_Tp) __a_;    _LIBCPP_INLINE_VISIBILITY  bool is_lock_free() const volatile _NOEXCEPT