5.5-merge

1 files changed, 54 insertions, 0 deletions

diff --git a/mysql-test/t/truncate_coverage.test b/mysql-test/t/truncate_coverage.test
index c9c4bd90ca4..135935b53b3 100644
--- a/mysql-test/t/truncate_coverage.test
+++ b/mysql-test/t/truncate_coverage.test
@@ -172,3 +172,57 @@ UNLOCK TABLES;
 DROP TABLE t1;
 SET DEBUG_SYNC='RESET';
 
+--echo #
+--echo # Bug#57659 Segfault in Query_cache::invalidate_data for TRUNCATE TABLE
+--echo #
+
+--echo # Note that this test case only reproduces the problem
+--echo # when it is run with valgrind.
+
+--disable_warnings
+DROP TABLE IF EXISTS t1, m1;
+--enable_warnings
+
+CREATE TABLE t1(a INT) engine=memory;
+CREATE TABLE m1(a INT) engine=merge UNION(t1);
+connect(con2, localhost, root);
+
+--echo # Connection con1
+connect(con1, localhost, root);
+SET DEBUG_SYNC= 'open_tables_after_open_and_process_table SIGNAL opened WAIT_FOR dropped';
+--echo # Sending:
+--send TRUNCATE TABLE m1
+
+--echo # Connection con2
+connection con2;
+SET DEBUG_SYNC= 'now WAIT_FOR opened';
+--echo # Sending:
+--send FLUSH TABLES
+
+--echo # Connection default
+connection default;
+--echo # Waiting for FLUSH TABLES to be blocked.
+let $wait_condition= SELECT COUNT(*)=1 FROM information_schema.processlist
+  WHERE state= 'Waiting for table flush' AND info= 'FLUSH TABLES';
+--source include/wait_condition.inc
+SET DEBUG_SYNC= 'now SIGNAL dropped';
+
+--echo # Connection con1
+connection con1;
+--echo # Reaping: TRUNCATE TABLE m1
+--error ER_WRONG_MRG_TABLE
+--reap
+disconnect con1;
+--source include/wait_until_disconnected.inc
+
+--echo # Connection con2
+connection con2;
+--echo # Reaping: FLUSH TABLES
+--reap
+disconnect con2;
+--source include/wait_until_disconnected.inc
+
+--echo # Connection default
+connection default;
+SET DEBUG_SYNC= 'RESET';
+DROP TABLE m1, t1;