From e1155848a140d2ded622f4d37d34bd2ab5e62cfd Mon Sep 17 00:00:00 2001
From: obdev <obdev@oceanbase.com>
Date: Thu, 14 Dec 2023 09:13:05 +0000
Subject: [PATCH] [to #53517978] fix memory leak with collection element assign
 to null

---
 src/sql/ob_spi.cpp | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/sql/ob_spi.cpp b/src/sql/ob_spi.cpp
index 4ba0a2c00f..92dd5f3eb4 100644
--- a/src/sql/ob_spi.cpp
+++ b/src/sql/ob_spi.cpp
@@ -5668,10 +5668,13 @@ int ObSPIService::spi_reset_collection(ObPLCollection *coll)
      * ORA-06531: Reference to uninitialized collection
      * ORA-06512: at line 6
      * */
-    coll->set_count(OB_INVALID_COUNT);
-    coll->set_first(OB_INVALID_INDEX);
-    coll->set_last(OB_INVALID_INDEX);
-    coll->set_data(NULL);
+    if (OB_NOT_NULL(coll->get_allocator())) {
+      OZ (spi_set_collection(MTL_ID(), NULL, *(coll->get_allocator()), *coll, 0, false));
+      OX (coll->set_count(OB_INVALID_COUNT));
+    } else {
+      CK (coll->get_count() == 0 || coll->get_count() == OB_INVALID_COUNT);
+      OX (coll->set_count(OB_INVALID_COUNT));
+    }
   }
   return ret;
 }