From 8363e2665995539541222e40a0be60c292f7495c Mon Sep 17 00:00:00 2001 From: Georgi Kodinov Date: Mon, 26 Oct 2009 11:55:57 +0200 Subject: Bug #47412: Valgrind warnings / user can read uninitalized memory using SP variables A function call may end without throwing an error or without setting the return value. This can happen when e.g. an error occurs while calculating the return value. Fixed by setting the value to NULL when error occurs during evaluation of an expression. --- mysql-test/t/sp-bugs.test | 61 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 mysql-test/t/sp-bugs.test (limited to 'mysql-test/t/sp-bugs.test') diff --git a/mysql-test/t/sp-bugs.test b/mysql-test/t/sp-bugs.test new file mode 100644 index 00000000000..7b94e65a5e9 --- /dev/null +++ b/mysql-test/t/sp-bugs.test @@ -0,0 +1,61 @@ +# Test file for stored procedure bugfixes + +--echo # +--echo # Bug #47412: Valgrind warnings / user can read uninitalized memory +--echo # using SP variables +--echo # + +CREATE SCHEMA testdb; +USE testdb; +DELIMITER |; +CREATE FUNCTION f2 () RETURNS INTEGER +BEGIN + DECLARE CONTINUE HANDLER FOR SQLSTATE '42000' SET @aux = 1; + RETURN f_not_exists () ; +END| +CREATE PROCEDURE p3 ( arg1 VARCHAR(32) ) +BEGIN + CALL p_not_exists ( ); +END| +DELIMITER ;| +--echo # should not return valgrind warnings +--error ER_SP_DOES_NOT_EXIST +CALL p3 ( f2 () ); + +DROP SCHEMA testdb; + +CREATE SCHEMA testdb; +USE testdb; +DELIMITER |; +CREATE FUNCTION f2 () RETURNS INTEGER +BEGIN + DECLARE CONTINUE HANDLER FOR SQLSTATE '42000' SET @aux = 1; + RETURN f_not_exists () ; +END| +CREATE PROCEDURE p3 ( arg2 INTEGER ) +BEGIN + CALL p_not_exists ( ); +END| +DELIMITER ;| +--echo # should not return valgrind warnings +--error ER_SP_DOES_NOT_EXIST +CALL p3 ( f2 () ); + +DROP SCHEMA testdb; + +CREATE SCHEMA testdb; +USE testdb; +DELIMITER |; +CREATE FUNCTION f2 () RETURNS INTEGER +BEGIN + DECLARE CONTINUE HANDLER FOR SQLSTATE '42000' SET @aux = 1; + RETURN f_not_exists () ; +END| +DELIMITER ;| +--echo # should not return valgrind warnings +SELECT f2 (); + +DROP SCHEMA testdb; + + +--echo End of 5.1 tests -- cgit v1.2.1