Alexander Barkov 212698b152 MDEV-8253 EXPLAIN SELECT prints unexpected characters ...

Item_string::clone_item() creates a new Item_string that
points exactly to the same buffer that the original one does.
Later, Item_string::print() uses c_ptr() for the original Item_string,
which reallocs the original buffer, and the clone remain with
the old freed buffer.
Refactoring the code not to use c_ptr() in Item_string::print().

2015-09-23 13:04:28 +04:00

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