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Fixed LP bug #800184.

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The function key_and() erroneously called SEL_ARG::increment_use_count()
when SEL_ARG::incr_refs() should had been called. This could lead to
wrong values of use_count for some SEL_ARG trees.
This commit is contained in:
Igor Babaev
2011-11-18 04:41:25 -08:00
parent e31887b592
commit 3433cf3e4f
4 changed files with 47 additions and 4 deletions
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4
sql/opt_range.cc
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@ -8565,8 +8565,8 @@ key_and(RANGE_OPT_PARAM *param, SEL_ARG *key1, SEL_ARG *key2, uint clone_flag)
continue;
SEL_ARG *next=key_and(param, e1->next_key_part, e2->next_key_part,
clone_flag);
e1->increment_use_count(1);
e2->increment_use_count(1);
e1->incr_refs();
e2->incr_refs();
if (!next || next->type != SEL_ARG::IMPOSSIBLE)
{
SEL_ARG *new_arg= e1->clone_and(e2);