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don't let current_thd to point to a destroyed THD

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* reset current_thd in THD::~THD, otherwise my_malloc_size_cb_func()
  might access THD after it was destroyed.
* remove now redundant set_current_thd(0) calls that follow delete thd.
This commit is contained in:
Sergei Golubchik
2015-02-03 18:19:56 +01:00
parent d0fb9580e0
commit bfe703a458
11 changed files with 1 additions and 25 deletions
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2
sql/sql_class.cc
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@@ -1712,7 +1712,7 @@ THD::~THD()
DBUG_ASSERT(status_var.local_memory_used == 0);
}
set_current_thd(orig_thd);
set_current_thd(orig_thd == this ? 0 : orig_thd);
DBUG_VOID_RETURN;
}