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-rw-r--r--sql/opt_range.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sql/opt_range.h b/sql/opt_range.h
index 73def7bde92..a504e35bf45 100644
--- a/sql/opt_range.h
+++ b/sql/opt_range.h
@@ -598,6 +598,7 @@ public:
SEL_ARG *clone_tree(RANGE_OPT_PARAM *param);
};
+extern MYSQL_PLUGIN_IMPORT SEL_ARG null_element;
class SEL_ARG_IMPOSSIBLE: public SEL_ARG
{