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Excluded posibility of tmp_table_param.copy_field double deletion (BUG#14851).

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mysql-test/r/kill.result:
  BUG#14851 test
mysql-test/t/kill.test:
  BUG#14851 test
sql/sql_class.cc:
  Debug prints are added.
sql/sql_select.cc:
  Allocation of tmp_join fixed to involve constructor (it is not related to the bug directly but might cause other problems).
  Excluded posibility of tmp_table_param.copy_field double deletion (BUG#14851).
sql/sql_select.h:
  JOINs constructor added, initialization of them fixed (it is not related to the bug directly but might cause other problems).
This commit is contained in:
unknown
2006-01-18 13:48:57 +02:00
parent d88df3a316
commit e7c25ed4a1
5 changed files with 87 additions and 4 deletions
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14
sql/sql_select.cc
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@ -4107,6 +4107,20 @@ JOIN::join_free(bool full)
problems in free_elements() as some of the elements are then deleted.
*/
tmp_table_param.copy_funcs.empty();
/*
If we have tmp_join and 'this' JOIN is not tmp_join and
tmp_table_param.copy_field's of them are equal then we have to remove
pointer to tmp_table_param.copy_field from tmp_join, because it qill
be removed in tmp_table_param.cleanup().
*/
if (tmp_join &&
tmp_join != this &&
tmp_join->tmp_table_param.copy_field ==
tmp_table_param.copy_field)
{
tmp_join->tmp_table_param.copy_field=
tmp_join->tmp_table_param.save_copy_field= 0;
}
tmp_table_param.cleanup();
}
DBUG_VOID_RETURN;