From 3281c25089bc33000bec8e0629d2a9759b492271 Mon Sep 17 00:00:00 2001
From: Jhin Lee <jhin.lee@unity3d.com>
Date: Mon, 7 Sep 2026 05:33:06 -0400
Subject: [PATCH] test: exit legacy discovery fixture explicitly

---
 test/client/fixtures/stdio_restart_server.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/client/fixtures/stdio_restart_server.dart b/test/client/fixtures/stdio_restart_server.dart
index e21a49f8..774dc9da 100644
--- a/test/client/fixtures/stdio_restart_server.dart
+++ b/test/client/fixtures/stdio_restart_server.dart
@@ -82,7 +82,9 @@ Future<void> main(List<String> arguments) async {
 
     if (method == 'server/discover') {
       if (replayBehavior == 'legacy-exit-on-discover') {
-        return;
+        // Exiting the async stdin loop can wait for input cancellation on
+        // Windows. This fixture must terminate the child before fallback.
+        exit(0);
       }
       final exercisesModernDiscoveryRecovery = launchCount == 1 &&
           (replayBehavior == 'modern-discovery-error-exit' ||