Core/DBLayer: Avoid a crash when calling mysql_get_server_version if connection was not open

1 files changed, 2 insertions, 1 deletions

diff --git a/src/server/shared/Database/DatabaseWorkerPool.h b/src/server/shared/Database/DatabaseWorkerPool.h
index 9f93e99ab26..fa02b1d369a 100644
--- a/src/server/shared/Database/DatabaseWorkerPool.h
+++ b/src/server/shared/Database/DatabaseWorkerPool.h
@@ -77,7 +77,8 @@ class DatabaseWorkerPool
             {
                 T* t = new T(_queue, _connectionInfo);
                 res &= t->Open();
-                WPFatal (mysql_get_server_version(t->GetHandle()) >= MIN_MYSQL_SERVER_VERSION, "TrinityCore does not support MySQL versions below 5.1");
+                if (res) // only check mysql version if connection is valid
+                    WPFatal(mysql_get_server_version(t->GetHandle()) >= MIN_MYSQL_SERVER_VERSION, "TrinityCore does not support MySQL versions below 5.1");
                 _connections[IDX_ASYNC][i] = t;
                 ++_connectionCount[IDX_ASYNC];
             }