[libcxx-commits] [libcxx] [Libcxx][NFC] fixing missing forward declarations of uses_allocator_construction_args (PR #67044)

[via libcxx-commits]

https://github.com/phyBrackets created https://github.com/llvm/llvm-project/pull/67044

Fixing #66714

>From 88cc695ae88d014d1fce8ced1077cf96fe6928a1 Mon Sep 17 00:00:00 2001
From: Shivam Kunwar <shivam.kunwar at kdab.com>
Date: Thu, 21 Sep 2023 22:52:42 +0530
Subject: [PATCH] forward declarations for __uses_allocator_construction_args

---
 .../__memory/uses_allocator_construction.h    | 38 ++++++++++++++++---
 1 file changed, 32 insertions(+), 6 deletions(-)

diff --git a/libcxx/include/__memory/uses_allocator_construction.h b/libcxx/include/__memory/uses_allocator_construction.h
index a2e4f6e26f4b3af..b4e3b54bf39b8f7 100644
--- a/libcxx/include/__memory/uses_allocator_construction.h
+++ b/libcxx/include/__memory/uses_allocator_construction.h
@@ -53,6 +53,32 @@ __uses_allocator_construction_args(const _Alloc& __alloc, _Args&&... __args) noe
 }
 
 template <class _Pair, class _Alloc, class _Tuple1, class _Tuple2, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto
+__uses_allocator_construction_args(const _Alloc& __a, piecewise_construct_t, _Tuple1&& __x, _Tuple2&& __y) noexcept;
+
+template <class _Pair, class _Alloc, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto __uses_allocator_construction_args(const _Alloc&) noexcept;
+
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto __uses_allocator_construction_args(const _Alloc&, _Up&&, _Vp&&) noexcept;
+
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto
+__uses_allocator_construction_args(const _Alloc& __alloc, pair<_Up, _Vp>& __pair) noexcept;
+
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto
+__uses_allocator_construction_args(const _Alloc& __alloc, const pair<_Up, _Vp>& __pair) noexcept;
+
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto
+__uses_allocator_construction_args(const _Alloc& __alloc, pair<_Up, _Vp>&& __pair) noexcept;
+
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI constexpr auto
+__uses_allocator_construction_args(const _Alloc& __alloc, const pair<_Up, _Vp>&& __pair) noexcept;
+
+template <class _Pair, class _Alloc, class _Tuple1, class _Tuple2, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto __uses_allocator_construction_args(
     const _Alloc& __alloc, piecewise_construct_t, _Tuple1&& __x, _Tuple2&& __y) noexcept {
   return std::make_tuple(
@@ -71,12 +97,12 @@ _LIBCPP_HIDE_FROM_ABI constexpr auto __uses_allocator_construction_args(
           std::forward<_Tuple2>(__y)));
 }
 
-template <class _Pair, class _Alloc, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+template <class _Pair, class _Alloc, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto __uses_allocator_construction_args(const _Alloc& __alloc) noexcept {
   return std::__uses_allocator_construction_args<_Pair>(__alloc, piecewise_construct, tuple<>{}, tuple<>{});
 }
 
-template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto
 __uses_allocator_construction_args(const _Alloc& __alloc, _Up&& __u, _Vp&& __v) noexcept {
   return std::__uses_allocator_construction_args<_Pair>(
@@ -87,7 +113,7 @@ __uses_allocator_construction_args(const _Alloc& __alloc, _Up&& __u, _Vp&& __v)
 }
 
 #  if _LIBCPP_STD_VER >= 23
-template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto
 __uses_allocator_construction_args(const _Alloc& __alloc, pair<_Up, _Vp>& __pair) noexcept {
   return std::__uses_allocator_construction_args<_Pair>(
@@ -95,14 +121,14 @@ __uses_allocator_construction_args(const _Alloc& __alloc, pair<_Up, _Vp>& __pair
 }
 #  endif
 
-template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto
 __uses_allocator_construction_args(const _Alloc& __alloc, const pair<_Up, _Vp>& __pair) noexcept {
   return std::__uses_allocator_construction_args<_Pair>(
       __alloc, piecewise_construct, std::forward_as_tuple(__pair.first), std::forward_as_tuple(__pair.second));
 }
 
-template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto
 __uses_allocator_construction_args(const _Alloc& __alloc, pair<_Up, _Vp>&& __pair) noexcept {
   return std::__uses_allocator_construction_args<_Pair>(
@@ -113,7 +139,7 @@ __uses_allocator_construction_args(const _Alloc& __alloc, pair<_Up, _Vp>&& __pai
 }
 
 #  if _LIBCPP_STD_VER >= 23
-template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int> = 0>
+template <class _Pair, class _Alloc, class _Up, class _Vp, __enable_if_t<__is_std_pair<_Pair>, int>>
 _LIBCPP_HIDE_FROM_ABI constexpr auto
 __uses_allocator_construction_args(const _Alloc& __alloc, const pair<_Up, _Vp>&& __pair) noexcept {
   return std::__uses_allocator_construction_args<_Pair>(