fix: segfault on out-of-shared-memory condition for multiplexed publi…

…shers
launchpadcentral · May 25, 2021 · fb1155a · fb1155a
1 parent 37a4bde
commit fb1155a
Showing 1 changed file with 10 additions and 8 deletions.
diff --git a/src/store/memory/memstore.c b/src/store/memory/memstore.c
@@ -3027,16 +3027,18 @@ static ngx_int_t publish_multi_callback(ngx_int_t status, void *rptr, void *priv
     pd->rc = status;
   }
 
-  if(pd->ch.last_seen < ch->last_seen) {
-    pd->ch.last_seen = ch->last_seen;
-  }
-
-  if(pd->ch.messages < ch->messages) {
-    pd->ch.messages = ch->messages;
+  if(ch) {
+    if(pd->ch.last_seen < ch->last_seen) {
+      pd->ch.last_seen = ch->last_seen;
+    }
+
+    if(pd->ch.messages < ch->messages) {
+      pd->ch.messages = ch->messages;
+    }
+
+    pd->ch.subscribers += ch->subscribers;
   }
 
-  pd->ch.subscribers += ch->subscribers;
-
   pd->n--;
 
   if(pd->n == 0) {