From c7855724677a104d267c0916cce39dc00902e33e Mon Sep 17 00:00:00 2001
From: Christoffer Lerno <christoffer@aegik.com>
Date: Thu, 13 Feb 2025 03:10:46 +0100
Subject: [PATCH] Add allocator::wrap.

---
 lib/std/core/allocators/arena_allocator.c3 | 5 +++++
 releasenotes.md                            | 1 +
 2 files changed, 6 insertions(+)

diff --git a/lib/std/core/allocators/arena_allocator.c3 b/lib/std/core/allocators/arena_allocator.c3
index 96baa975a..f988a6635 100644
--- a/lib/std/core/allocators/arena_allocator.c3
+++ b/lib/std/core/allocators/arena_allocator.c3
@@ -31,6 +31,11 @@ struct ArenaAllocatorHeader @local
 	char[?] data;
 }
 
+macro ArenaAllocator* wrap(char[] bytes)
+{
+	return ArenaAllocator{}.init(bytes);
+}
+
 <*
  @require ptr != null
 *>
diff --git a/releasenotes.md b/releasenotes.md
index 555e0a563..9f06beeea 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -77,6 +77,7 @@
 - Added weakly linked `fmodf`.
 - Add `@select` to perform the equivalent of `a ? x : y` at compile time.
 - `HashMap` is now `Printable`.
+- Add `allocator::wrap` to create an arena allocator on the stack from bytes.
 
 ## 0.6.6 Change list