Bug#17733 Flushing logs causes daily server crash

Server crashes if a flush commmand is issued and binlog is closed.
- added check to prevent binlog access when binlog file isn't opened.


sql/sql_parse.cc:
  - removed deprecated environment consistency check.
  - added check to prevent binlog access on closed binlog.
mysql-test/t/flush2-master.opt:
  - Added test case (master options)
mysql-test/t/flush2.test:
  - Added test case
mysql-test/r/flush2.result:
  - Added test case (resultfile)

3 files changed, 34 insertions, 0 deletions

diff --git a/mysql-test/r/flush2.result b/mysql-test/r/flush2.result
new file mode 100644
index 00000000000..7c94219fd71
--- /dev/null
+++ b/mysql-test/r/flush2.result
@@ -0,0 +1,24 @@
+flush logs;
+set global expire_logs_days = 3;
+show variables like 'log%';
+Variable_name	Value
+log	ON
+log_bin	OFF
+log_bin_trust_function_creators	ON
+log_error	
+log_queries_not_using_indexes	OFF
+log_slave_updates	OFF
+log_slow_queries	OFF
+log_warnings	1
+flush logs;
+show variables like 'log%';
+Variable_name	Value
+log	ON
+log_bin	OFF
+log_bin_trust_function_creators	ON
+log_error	
+log_queries_not_using_indexes	OFF
+log_slave_updates	OFF
+log_slow_queries	OFF
+log_warnings	1
+set global expire_logs_days = 0;
diff --git a/mysql-test/t/flush2-master.opt b/mysql-test/t/flush2-master.opt
new file mode 100644
index 00000000000..ccbd01c91d3
--- /dev/null
+++ b/mysql-test/t/flush2-master.opt
@@ -0,0 +1 @@
+--disable-log-bin
diff --git a/mysql-test/t/flush2.test b/mysql-test/t/flush2.test
new file mode 100644
index 00000000000..fc9e88e3141
--- /dev/null
+++ b/mysql-test/t/flush2.test
@@ -0,0 +1,9 @@
+#
+# Bug#17733 Flushing logs causes daily server crash
+#
+flush logs;
+set global expire_logs_days = 3;
+show variables like 'log%';
+flush logs;
+show variables like 'log%';
+set global expire_logs_days = 0;