LWG3426 operator<=>(const unique_ptr<T, D>&, nullptr_t) can't get no satisfaction

Author: burblebee

source/utilities.tex

@@ -7116,8 +7116,8 @@
   template<class T, class D>
     bool operator>=(nullptr_t, const unique_ptr<T, D>& y);
   template<class T, class D>
-    requires @\libconcept{three_way_comparable_with}@<typename unique_ptr<T, D>::pointer, nullptr_t>
-    compare_three_way_result_t<typename unique_ptr<T, D>::pointer, nullptr_t>
+    requires @\libconcept{three_way_comparable}@<typename unique_ptr<T, D>::pointer>
+    compare_three_way_result_t<typename unique_ptr<T, D>::pointer>
       operator<=>(const unique_ptr<T, D>& x, nullptr_t);
 
   template<class E, class T, class Y, class D>
@@ -9617,15 +9617,17 @@
 \indexlibrarymember{operator<=>}{unique_ptr}%
 \begin{itemdecl}
 template<class T, class D>
-  requires @\libconcept{three_way_comparable_with}@<typename unique_ptr<T, D>::pointer, nullptr_t>
-  compare_three_way_result_t<typename unique_ptr<T, D>::pointer, nullptr_t>
+  requires @\libconcept{three_way_comparable}@<typename unique_ptr<T, D>::pointer>
+  compare_three_way_result_t<typename unique_ptr<T, D>::pointer>
     operator<=>(const unique_ptr<T, D>& x, nullptr_t);
 \end{itemdecl}
 
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{compare_three_way()(x.get(), nullptr)}.
+\begin{codeblock}
+compare_three_way()(x.get(), static_cast<typename unique_ptr<T, D>::pointer>(nullptr)).
+\end{codeblock}
 \end{itemdescr}
 
 \rSec3[unique.ptr.io]{I/O}