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a temporary table has grown out of heap memory reserved for it and the remaining disk space is not big enough to store the table as a MyISAM table. The crash happens because the function create_myisam_from_heap does not handle safely the mem_root structure associated with the converted table in the case when an error has occurred. sql/sql_select.cc: Fixed bug #28449: a crash may happen at some rare conditions when a temporary table has grown out of heap memory reserved for it and the remaining disk space is not big enough to store the table as a MyISAM table. The crash happens because the function create_myisam_from_heap does not handle safely the mem_root structure associated with the converted table in the case when an error has occurred. As it's hard to create a sitiation that would throw an error a special code has been added that raises an error for a newly created test called error_simulation. mysql-test/r/error_simulation.result: New BitKeeper file ``mysql-test/r/error_simulation.result'' Added a test case for bug #28449. mysql-test/t/error_simulation-master.opt: New BitKeeper file ``mysql-test/t/error_simulation-master.opt'' mysql-test/t/error_simulation.test: New BitKeeper file ``mysql-test/t/error_simulation.test'' Added a test case for bug #28449.
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