LWG4377 Misleading note about lock-free property of std::atomic_ref

Author: eisenwave

source/threads.tex

@@ -3239,14 +3239,10 @@
 
 \pnum
 \begin{note}
-Hardware could require an object
-referenced by an \tcode{atomic_ref}
-to have stricter alignment\iref{basic.align}
-than other objects of type \tcode{T}.
-Further, whether operations on an \tcode{atomic_ref}
-are lock-free could depend on the alignment of the referenced object.
-For example, lock-free operations on \tcode{std::complex<double>}
-could be supported only if aligned to \tcode{2*alignof(double)}.
+An implementation can choose to define
+\tcode{atomic_ref<T>::required_alignment}
+to a value greater than \tcode{alignof(T)} in order to ensure that
+operations on all objects of type \tcode{atomic_ref<T>} are lock-free.
 \end{note}
 \end{itemdescr}