Tweak function signatures

Author: frederick-vs-ja

libcxx/include/__memory/unique_ptr.h

@@ -209,12 +209,11 @@ class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI unique_ptr {
   template <bool _Dummy = true, class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> > >
   _LIBCPP_HIDE_FROM_ABI unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete;
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23
 #if _LIBCPP_STD_VER >= 20
-  unique_ptr(unique_ptr&& __u) noexcept
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unique_ptr(unique_ptr&& __u) noexcept
     requires is_move_constructible_v<_Dp>
 #else
-  unique_ptr(_If<is_move_constructible<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
+  _LIBCPP_HIDE_FROM_ABI unique_ptr(_If<is_move_constructible<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
 #endif
       : __ptr_(__u.release()), __deleter_(std::forward<deleter_type>(__u.get_deleter())) {
   }
@@ -233,12 +232,11 @@ class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI unique_ptr {
   _LIBCPP_HIDE_FROM_ABI unique_ptr(auto_ptr<_Up>&& __p) _NOEXCEPT : __ptr_(__p.release()), __deleter_() {}
 #endif
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unique_ptr&
 #if _LIBCPP_STD_VER >= 20
-  operator=(unique_ptr&& __u) noexcept
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unique_ptr& operator=(unique_ptr&& __u) noexcept
     requires is_move_assignable_v<_Dp>
 #else
-  operator=(_If<is_move_assignable<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
+  _LIBCPP_HIDE_FROM_ABI unique_ptr& operator=(_If<is_move_assignable<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
 #endif
   {
     reset(__u.release());
@@ -544,24 +542,22 @@ class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI unique_ptr<_Tp[], _Dp> {
             class       = _EnableIfPointerConvertible<_Pp> >
   _LIBCPP_HIDE_FROM_ABI unique_ptr(_Pp __ptr, _BadRValRefType<_Dummy> __deleter) = delete;
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23
 #if _LIBCPP_STD_VER >= 20
-  unique_ptr(unique_ptr&& __u) noexcept
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unique_ptr(unique_ptr&& __u) noexcept
     requires is_move_constructible_v<_Dp>
 #else
-  unique_ptr(_If<is_move_constructible<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
+  _LIBCPP_HIDE_FROM_ABI unique_ptr(_If<is_move_constructible<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
 #endif
       : __ptr_(__u.release()),
         __deleter_(std::forward<deleter_type>(__u.get_deleter())),
         __checker_(std::move(__u.__checker_)) {
   }
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unique_ptr&
 #if _LIBCPP_STD_VER >= 20
-  operator=(unique_ptr&& __u) noexcept
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unique_ptr& operator=(unique_ptr&& __u) noexcept
     requires is_move_assignable_v<_Dp>
 #else
-  operator=(_If<is_move_assignable<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
+  _LIBCPP_HIDE_FROM_ABI unique_ptr& operator=(_If<is_move_assignable<_Dp>::value, unique_ptr&&, __nat> __u) _NOEXCEPT
 #endif
   {
     reset(__u.release());