Fix for Bug#32748: Inconsistent handling of assignments to

general_log_file/slow_query_log_file.

The problem was that log file path was rejected if directory
path was empty. The fix is to reject log file path only if it
is entirely empty.


mysql-test/r/log_state.result:
  Update result file.
mysql-test/t/log_state.test:
  A test case for Bug#32748: Inconsistent handling of assignments to
  general_log_file/slow_query_log_file.
sql/set_var.cc:
  Accept file path if dirname is empty.
  Reject file path if it is empty.

1 files changed, 28 insertions, 0 deletions

diff --git a/mysql-test/t/log_state.test b/mysql-test/t/log_state.test
index a340238b724..2fd2cabc97c 100644
--- a/mysql-test/t/log_state.test
+++ b/mysql-test/t/log_state.test
@@ -231,6 +231,34 @@ set global slow_query_log_file= NULL;
 set global general_log_file= @old_general_log_file;
 set global slow_query_log_file= @old_slow_query_log_file;
 
+###########################################################################
+
+--echo
+--echo # --
+--echo # -- Bug#32748: Inconsistent handling of assignments to
+--echo # -- general_log_file/slow_query_log_file.
+--echo # --
+
+--echo
+SET @general_log_file_saved = @@global.general_log_file;
+SET @slow_query_log_file_saved = @@global.slow_query_log_file;
+
+--echo
+SET GLOBAL general_log_file = 'bug32748.query.log';
+SET GLOBAL slow_query_log_file = 'bug32748.slow.log';
+
+--echo
+SHOW VARIABLES LIKE '%log_file';
+
+--echo
+SET GLOBAL general_log_file = @general_log_file_saved;
+SET GLOBAL slow_query_log_file = @slow_query_log_file_saved;
+
+--echo
+--echo # -- End of Bug#32748.
+
+###########################################################################
+
 --echo End of 5.1 tests
 
 --enable_ps_protocol