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MDEV-19536 - Server crash or ASAN heap-use-after-free in is_temporary_table /

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read_statistics_for_tables_if_needed

Regression after 279a907, read_statistics_for_tables_if_needed() was
called after open_normal_and_derived_tables() failure.

Fixed by moving read_statistics_for_tables() call to a branch of
get_schema_stat_record() where result of open_normal_and_derived_tables()
is checked.

Removed THD::force_read_stats, added read_statistics_for_tables() instead.
Simplified away statistics_for_command_is_needed().
This commit is contained in:
Sergey Vojtovich
2019-10-02 16:04:52 +04:00
parent e43791d4dc
commit adefaeffcc
5 changed files with 29 additions and 64 deletions
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sql/sql_class.cc
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@ -986,7 +986,6 @@ THD::THD(bool is_wsrep_applier)
memset(&invoker_host, 0, sizeof(invoker_host));
prepare_derived_at_open= FALSE;
create_tmp_table_for_derived= FALSE;
force_read_stats= FALSE;
save_prep_leaf_list= FALSE;
/* Restore THR_THD */
set_current_thd(old_THR_THD);