Merge tag 'v0.34.0rc1' into matrix-org-hotfixes

1 files changed, 3 insertions, 1 deletions

diff --git a/synapse/state/v1.py b/synapse/state/v1.py

index 70a981f4a2..19e091ce3b 100644
--- a/synapse/state/v1.py
+++ b/synapse/state/v1.py
@@ -298,6 +298,8 @@ def _resolve_normal_events(events, auth_events):
 
 def _ordered_events(events):
     def key_func(e):
-        return -int(e.depth), hashlib.sha1(e.event_id.encode('ascii')).hexdigest()
+        # we have to use utf-8 rather than ascii here because it turns out we allow
+        # people to send us events with non-ascii event IDs :/
+        return -int(e.depth), hashlib.sha1(e.event_id.encode('utf-8')).hexdigest()
 
     return sorted(events, key=key_func)