[Tarantool-patches] [PATCH 2/2] box/applier: add missing diag_set on region_alloc failure

[Cyrill Gorcunov]

In case if we're hitting memory limit allocting triggers
we should setup diag error to prevent nil dereference
in diag_raise call for example from applier_apply_tx.

Signed-off-by: Cyrill Gorcunov <gorcunov at gmail.com>
---
 src/box/applier.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/box/applier.cc b/src/box/applier.cc
index 1a051e8c4..5b1efdabe 100644
--- a/src/box/applier.cc
+++ b/src/box/applier.cc
@@ -714,8 +714,11 @@ applier_apply_tx(struct stailq *rows)
 						     sizeof(struct trigger));
 	on_commit = (struct trigger *)region_alloc(&txn->region,
 						   sizeof(struct trigger));
-	if (on_rollback == NULL || on_commit == NULL)
+	if (on_rollback == NULL || on_commit == NULL) {
+		diag_set(OutOfMemory, sizeof(struct trigger),
+			 "region_alloc", "on_rollback/on_commit");
 		goto rollback;
+	}
 
 	trigger_create(on_rollback, applier_txn_rollback_cb, NULL, NULL);
 	txn_on_rollback(txn, on_rollback);
-- 
2.20.1