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Bug #50907 Assertion `hash_tables->table->next == __null' on

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HANDLER OPEN

The problem was a too restrictive assert in the code for 
HANDLER ... OPEN and HANDLER ... READ that checked table->next
to verify that we didn't open views or merge tables.

This pointer is also used to link temporary tables together
(see thd->temporary_tables). In this case TABLE::next can be
set even if we're trying to open a single table.

This patch adjust the two asserts to also check for the presence
of temporary tables.

Test case added to handler_myisam.test.
This commit is contained in:
Jon Olav Hauglid
2010-02-05 15:52:17 +01:00
parent 89269e5142
commit 1ca7c51961
4 changed files with 56 additions and 3 deletions
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12
mysql-test/r/handler_myisam.result
View File

@@ -1462,6 +1462,18 @@ ERROR 42S02: Unknown table 'no_such_table' in HANDLER
handler no_such_table close;
ERROR 42S02: Unknown table 'no_such_table' in HANDLER
#
# Bug#50907 Assertion `hash_tables->table->next == __null' on
# HANDLER OPEN
#
DROP TABLE IF EXISTS t1, t2;
CREATE TEMPORARY TABLE t1 (i INT);
CREATE TEMPORARY TABLE t2 (i INT);
HANDLER t2 OPEN;
HANDLER t2 READ FIRST;
i
HANDLER t2 CLOSE;
DROP TABLE t1, t2;
#
# BUG #46456: HANDLER OPEN + TRUNCATE + DROP (temporary) TABLE, crash
#
CREATE TABLE t1 AS SELECT 1 AS f1;