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MDEV-15991 Server crashes in setup_on_expr upon calling SP or function executing DML on versioned tables

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Do not try to set versioning conditions on every SP call. It may work
incorrectly, but it's a general bug described in MDEV-774.
This patch makes system versioning stuff consistent with other code and
also fixes a use-after-free bug.

Closes #756
This commit is contained in:
Eugene Kosov
2018-05-16 18:11:30 +03:00
committed by Sergei Golubchik
parent b1efff46cd
commit 748ef3ec91
4 changed files with 40 additions and 3 deletions
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2
sql/sql_select.cc
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@ -725,7 +725,7 @@ int SELECT_LEX::vers_setup_conds(THD *thd, TABLE_LIST *tables)
TABLE_LIST *table;
if (!thd->stmt_arena->is_conventional() &&
!thd->stmt_arena->is_stmt_prepare() && !thd->stmt_arena->is_sp_execute())
!thd->stmt_arena->is_stmt_prepare_or_first_sp_execute())
{
// statement is already prepared
DBUG_RETURN(0);