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authorErik Johnston <erik@matrix.org>2018-11-02 10:29:19 +0000
committerErik Johnston <erik@matrix.org>2018-11-02 10:29:19 +0000
commit54aec35867d24bafa870e5b437a11b9a0c502658 (patch)
treecdb59953e1c9a6c06df12bd32c4965ce98c21d6e /synapse/state
parentMerge pull request #4128 from matrix-org/erikj/state_res_v2_version (diff)
downloadsynapse-54aec35867d24bafa870e5b437a11b9a0c502658.tar.xz
Fix None exception in state res v2
Diffstat (limited to 'synapse/state')
-rw-r--r--synapse/state/v2.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/state/v2.py b/synapse/state/v2.py
index 5d06f7e928..dbc9688c56 100644
--- a/synapse/state/v2.py
+++ b/synapse/state/v2.py
@@ -53,6 +53,10 @@ def resolve_events_with_store(state_sets, event_map, state_res_store):
 
     logger.debug("Computing conflicted state")
 
+    # We use event_map as a cache, so if its None we need to initialize it
+    if event_map is None:
+        event_map = {}
+
     # First split up the un/conflicted state
     unconflicted_state, conflicted_state = _seperate(state_sets)