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MDEV-22779: Crash: Prepared Statement with a '?' parameter inside a re-used CTE
When a prepared statement parameter '?' is used in a CTE that is used multiple times, the following happens: - The CTE definition is re-parsed multiple times. - There are multiple Item_param objects referring to the same "?" in the original query. - Prepared_statement::param has a pointer to the first of them, the others are "clones". - When prepared statement parameter gets the value, it should be passed over to clones with param->sync_clones() call. This call is made in insert_params(), etc. It was not made in insert_params_with_log(). This would cause Item_param to not have any value which would confuse the query optimizer. Added the missing call.
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@ -5997,6 +5997,7 @@ static void optimize_keyuse(JOIN *join, DYNAMIC_ARRAY *keyuse_array)
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uint n_tables= my_count_bits(map);
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if (n_tables == 1) // Only one table
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{
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DBUG_ASSERT(!(map & PSEUDO_TABLE_BITS)); // Must be a real table
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Table_map_iterator it(map);
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int tablenr= it.next_bit();
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DBUG_ASSERT(tablenr != Table_map_iterator::BITMAP_END);
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