sys_eval crash mysql and sys_exec do nothing #10
Description
Hi,
I try to use this plugin on a 5.5.42-MariaDB, Thus I compiled (gcc -DMYSQL_DYNAMIC_PLUGIN -fPIC -Wall -I/usr/include/mysql -shared lib_mysqludf_sys.c -o /usr/lib/mysql/plugin/lib_mysqludf_sys.so) the .so and placed it in the right folder then created the function like this:
CREATE FUNCTION sys_exec RETURNS int SONAME 'lib_mysqludf_sys.so';
CREATE FUNCTION sys_eval RETURNS string SONAME 'lib_mysqludf_sys.so';
No errors, but:
MariaDB [(none)]> select sys_exec('pwd');
+-----------------+
| sys_exec('pwd') |
+-----------------+
| -1 |
+-----------------+
1 row in set (0.01 sec)
and
MariaDB [(none)]> SELECT sys_eval('id');
ERROR 2013 (HY000): Lost connection to MySQL server during query
With this in the syslog right after the sys_eval:
mysqld: 160108 14:43:29 [ERROR] mysqld got signal 11 ;
mysqld: This could be because you hit a bug. It is also possible that this binary
mysqld: or one of the libraries it was linked against is corrupt, improperly built,
mysqld: or misconfigured. This error can also be caused by malfunctioning hardware.
Any idea ?