From 4adf4b3622d0727326faed7e44502851332d8564 Mon Sep 17 00:00:00 2001
From: Dominion <benine203@gmail.com>
Date: Tue, 10 Dec 2024 17:13:10 -0800
Subject: [PATCH] libc++20 removes std::__compressed_pair; amend preprocessor
 directive

---
 folly/memory/UninitializedMemoryHacks.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/folly/memory/UninitializedMemoryHacks.h b/folly/memory/UninitializedMemoryHacks.h
index daf5eb73590..04e22800089 100644
--- a/folly/memory/UninitializedMemoryHacks.h
+++ b/folly/memory/UninitializedMemoryHacks.h
@@ -298,7 +298,7 @@ namespace detail {
   }                                                                      \
   }
 
-#if defined(_LIBCPP_VECTOR)
+#if defined(_LIBCPP_VECTOR) && (_LIBCPP_VERSION < 200000)
 // libc++
 
 template <typename T, typename Alloc = std::allocator<T>>