From 1b4bb3b5bb2df01bd7ce1c8499d9cb79a62201c9 Mon Sep 17 00:00:00 2001
From: Alexander Barkov <bar@mariadb.com>
Date: Tue, 2 Apr 2019 09:13:16 +0400
Subject: MDEV-19124 Assertion `0' failed in Item::val_native

---
 sql/item_windowfunc.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'sql/item_windowfunc.cc')

diff --git a/sql/item_windowfunc.cc b/sql/item_windowfunc.cc
index aa2c7756ab7..adff1c3612b 100644
--- a/sql/item_windowfunc.cc
+++ b/sql/item_windowfunc.cc
@@ -439,6 +439,14 @@ Item_sum_hybrid_simple::val_str(String *str)
   return retval;
 }
 
+bool Item_sum_hybrid_simple::val_native(THD *thd, Native *to)
+{
+  DBUG_ASSERT(fixed == 1);
+  if (null_value)
+    return true;
+  return val_native_from_item(thd, value, to);
+}
+
 bool Item_sum_hybrid_simple::get_date(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzydate)
 {
   DBUG_ASSERT(fixed == 1);
-- 
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