From 522cd3c7aa9b466d5e0a4d010d4acb13c76a014c Mon Sep 17 00:00:00 2001
From: Alexander Barkov <bar@mariadb.com>
Date: Fri, 10 Aug 2018 06:22:13 +0400
Subject: [PATCH] Fixing compilation failure on Windows (cannot compare "bool"
 and "my_bool" directly, cast needed)

---
 sql/item_func.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sql/item_func.h b/sql/item_func.h
index fc51a41e9b6..f44986a9111 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -2197,7 +2197,7 @@ protected:
     {
       my_bool tmp_null_value;
       m_ptr= udf->val_decimal(&tmp_null_value, &m_buffer);
-      DBUG_ASSERT(is_null() == tmp_null_value);
+      DBUG_ASSERT(is_null() == (tmp_null_value != 0));
       func->null_value= is_null();
     }
   };