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-rw-r--r--sql/item.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/item.h b/sql/item.h
index 798abb5112a..fd4b8cb3e14 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -2890,7 +2890,7 @@ public:
bool walk(Item_processor processor, bool walk_subquery, uchar *args)
{
- return arg->walk(processor, walk_subquery, args) ||
+ return (arg && arg->walk(processor, walk_subquery, args)) ||
(this->*processor)(args);
}