From b7f00a643d121f48d2772607541b7febcf18f190 Mon Sep 17 00:00:00 2001
From: Todd Volkert <tvolkert@users.noreply.github.com>
Date: Mon, 6 Mar 2017 11:40:14 -0800
Subject: [PATCH] Defensively handle case of VMservice message that has no id.
 (#8587)

---
 packages/flutter_tools/lib/src/vmservice_record_replay.dart | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/flutter_tools/lib/src/vmservice_record_replay.dart b/packages/flutter_tools/lib/src/vmservice_record_replay.dart
index af948e0051..2b6470ce03 100644
--- a/packages/flutter_tools/lib/src/vmservice_record_replay.dart
+++ b/packages/flutter_tools/lib/src/vmservice_record_replay.dart
@@ -83,6 +83,10 @@ abstract class _Message implements Comparable<_Message> {
 
   @override
   int compareTo(_Message other) {
+    if (id == null) {
+      printError('Invalid VMService message data detected: $data');
+      return -1;
+    }
     final int result = id.compareTo(other.id);
     if (result != 0) {
       return result;