Initial commit: Go 1.23 release state

src/reflect/arena.go

@@ -0,0 +1,18 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build goexperiment.arenas
+
+package reflect
+
+import "arena"
+
+// ArenaNew returns a [Value] representing a pointer to a new zero value for the
+// specified type, allocating storage for it in the provided arena. That is,
+// the returned Value's Type is [PointerTo](typ).
+func ArenaNew(a *arena.Arena, typ Type) Value {
+	return ValueOf(arena_New(a, PointerTo(typ)))
+}
+
+func arena_New(a *arena.Arena, typ any) any