From 7639298b9be9ed391ca1c9682470053e49969d9d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nils=20O=2E=20Sel=C3=A5sdal?= <nos@utel.tech>
Date: Tue, 8 Sep 2026 00:20:22 +0200
Subject: [PATCH] Fix arena flags

---
 src/arena.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/arena.h b/src/arena.h
index 7512beb..49d699d 100644
--- a/src/arena.h
+++ b/src/arena.h
@@ -5,12 +5,13 @@
 typedef U32 ArenaFlags;
 typedef struct ArenaOptions ArenaOptions;
 enum {
-    ArenaFlag_NoDecommit, // arena_ temp_end/reset/reset_to doesn't decommit memory
+    ArenaFlag_NoDecommit = 1, // operations which shrinks the arena does not decommit memory.
+                              // (arena_trim() can still decommit when called explicitly)
 };
 struct ArenaOptions {
     U32 size;
     U32 commit_size;
-    ArenaFlags flags; // No flags defined yet
+    ArenaFlags flags;
 };
 
 typedef struct MemoryBlock MemoryBlock;