1 files changed, 48 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__memory/allocate_at_least.h b/contrib/llvm-project/libcxx/include/__memory/allocate_at_least.h
new file mode 100644
index 000000000000..df73d9a2e94a
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__memory/allocate_at_least.h
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MEMORY_ALLOCATE_AT_LEAST_H
+#define _LIBCPP___MEMORY_ALLOCATE_AT_LEAST_H
+
+#include <__config>
+#include <__memory/allocator_traits.h>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER >= 23
+
+template <class _Alloc>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr auto __allocate_at_least(_Alloc& __alloc, size_t __n) {
+  return std::allocator_traits<_Alloc>::allocate_at_least(__alloc, __n);
+}
+
+#else
+
+template <class _Pointer>
+struct __allocation_result {
+  _Pointer ptr;
+  size_t count;
+};
+
+template <class _Alloc>
+_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI
+_LIBCPP_CONSTEXPR __allocation_result<typename allocator_traits<_Alloc>::pointer>
+__allocate_at_least(_Alloc& __alloc, size_t __n) {
+  return {__alloc.allocate(__n), __n};
+}
+
+#endif // _LIBCPP_STD_VER >= 23
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___MEMORY_ALLOCATE_AT_LEAST_H