From 214abf86bb8a7989d8779d51370277f936a73e71 Mon Sep 17 00:00:00 2001
From: Charles Cunningham <ccunningham@openai.com>
Date: Thu, 5 Feb 2026 18:55:42 -0800
Subject: [PATCH] Clarify pending-call trim guard in remote compaction

---
 codex-rs/core/src/compact_remote.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/codex-rs/core/src/compact_remote.rs b/codex-rs/core/src/compact_remote.rs
index ab46351715..49fe4a02ff 100644
--- a/codex-rs/core/src/compact_remote.rs
+++ b/codex-rs/core/src/compact_remote.rs
@@ -126,6 +126,8 @@ fn trim_function_call_history_to_fit_context_window(
         let Some(last_item) = history.raw_items().last() else {
             break;
         };
+        // Keep a trailing tool call until its output is present; trimming the
+        // call first can orphan a later-arriving output during mid-stream auto-compaction.
         if is_pending_tool_call_without_output(last_item, history.raw_items()) {
             break;
         }