From c1e19796056dae6cb1eca53e06cb68aa9d23176e Mon Sep 17 00:00:00 2001
From: Derek Mauro <dmauro@google.com>
Date: Mon, 1 Jun 2026 08:25:35 -0700
Subject: [PATCH] Use std::make_unique_for_overwrite to implement
 absl::make_unique_for_overwrite when it is available

PiperOrigin-RevId: 924723063
Change-Id: Id3981612b1880c2bee505ca49ae079dc713ac746
---
 absl/memory/memory.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/absl/memory/memory.h b/absl/memory/memory.h
index 7be49838..88320e5f 100644
--- a/absl/memory/memory.h
+++ b/absl/memory/memory.h
@@ -96,6 +96,11 @@ std::unique_ptr<T> WrapUnique(T* ptr) {
 // should use `std::make_unique`.
 using std::make_unique;
 
+#if defined(__cpp_lib_smart_ptr_for_overwrite) && \
+    __cpp_lib_smart_ptr_for_overwrite >= 202002L
+using std::make_unique_for_overwrite;
+#else
+
 namespace memory_internal {
 
 // Traits to select proper overload and return type for
@@ -143,6 +148,8 @@ template <typename T, typename... Args>
 typename memory_internal::MakeUniqueResult<T>::invalid
 make_unique_for_overwrite(Args&&... /* args */) = delete;
 
+#endif  // __cpp_lib_smart_ptr_for_overwrite
+
 // -----------------------------------------------------------------------------
 // Function Template: RawPtr()
 // -----------------------------------------------------------------------------