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MDEV-21998: Server crashes in st_select_lex::add_table_to_list upon mix of KILL and sequences

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Continue support the hack of current select equal builtin select if
selects stack is empty even after subselects.
This commit is contained in:
Oleksandr Byelkin
2020-07-24 09:59:38 +02:00
parent fd9ca2a742
commit c6eb21cd87
14 changed files with 67 additions and 44 deletions
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5
sql/sql_lex.h
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@ -3632,8 +3632,9 @@ public:
if (unlikely(!select_stack_top))
{
current_select= NULL;
DBUG_PRINT("info", ("Top Select is empty"));
current_select= &builtin_select;
DBUG_PRINT("info", ("Top Select is empty -> sel builtin: %p",
current_select));
}
else
current_select= select_stack[select_stack_top - 1];