From 2965fce70d14e917f42aa1e2f239beb92eae41b5 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Thu, 8 Jul 2021 17:31:52 -0700
Subject: [PATCH] Avoid panic when spawn is called after run exits in
 deterministic executor

---
 gpui/src/executor.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/gpui/src/executor.rs b/gpui/src/executor.rs
index 75a36f8088..715d6f2874 100644
--- a/gpui/src/executor.rs
+++ b/gpui/src/executor.rs
@@ -51,7 +51,9 @@ impl Deterministic {
         let (runnable, task) = async_task::spawn_local(future, move |runnable| {
             let mut runnables = runnables.lock();
             runnables.0.push(runnable);
-            runnables.1.as_ref().unwrap().send(()).ok();
+            if let Some(wake_tx) = runnables.1.as_ref() {
+                wake_tx.send(()).ok();
+            }
         });
         runnable.schedule();
         task
@@ -66,7 +68,9 @@ impl Deterministic {
         let (runnable, task) = async_task::spawn(future, move |runnable| {
             let mut runnables = runnables.lock();
             runnables.0.push(runnable);
-            runnables.1.as_ref().unwrap().send(()).ok();
+            if let Some(wake_tx) = runnables.1.as_ref() {
+                wake_tx.send(()).ok();
+            }
         });
         runnable.schedule();
         task