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-rw-r--r--mysql-test/r/sp-destruct.result57
-rw-r--r--mysql-test/t/sp-destruct.test35
2 files changed, 92 insertions, 0 deletions
diff --git a/mysql-test/r/sp-destruct.result b/mysql-test/r/sp-destruct.result
index 5bb3b17d4b8..42bbe3681ae 100644
--- a/mysql-test/r/sp-destruct.result
+++ b/mysql-test/r/sp-destruct.result
@@ -171,3 +171,60 @@ create database mysqltest1;
create procedure mysqltest1.foo() select "foo";
update mysql.proc set name='' where db='mysqltest1';
drop database mysqltest1;
+#
+# MDEV-15444 Querying I_S.PARAMETERS can crash with a corrupted mysql.proc
+#
+CREATE OR REPLACE FUNCTION f1 (a INT) RETURNS INT RETURN 10;
+CREATE OR REPLACE FUNCTION f2 (a INT) RETURNS INT RETURN 10;
+SELECT
+@type0:=COLUMN_TYPE AS t0,
+@type1:=REPLACE(COLUMN_TYPE,')',',''XXX'')') AS t1
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE table_schema='mysql' AND table_name='proc' AND column_name='type';
+t0 enum('FUNCTION','PROCEDURE','PACKAGE','PACKAGE BODY')
+t1 enum('FUNCTION','PROCEDURE','PACKAGE','PACKAGE BODY','XXX')
+EXECUTE IMMEDIATE CONCAT('ALTER TABLE mysql.proc MODIFY type ', @type1);
+SHOW COLUMNS IN mysql.proc LIKE 'type';
+Field Type Null Key Default Extra
+type enum('FUNCTION','PROCEDURE','PACKAGE','PACKAGE BODY','XXX') NO PRI NULL
+UPDATE mysql.proc SET type='XXX' WHERE name='f1' AND db='test';
+SELECT * FROM INFORMATION_SCHEMA.PARAMETERS WHERE SPECIFIC_SCHEMA='test';
+SPECIFIC_CATALOG def
+SPECIFIC_SCHEMA test
+SPECIFIC_NAME f2
+ORDINAL_POSITION 0
+PARAMETER_MODE NULL
+PARAMETER_NAME NULL
+DATA_TYPE int
+CHARACTER_MAXIMUM_LENGTH NULL
+CHARACTER_OCTET_LENGTH NULL
+NUMERIC_PRECISION 10
+NUMERIC_SCALE 0
+DATETIME_PRECISION NULL
+CHARACTER_SET_NAME NULL
+COLLATION_NAME NULL
+DTD_IDENTIFIER int(11)
+ROUTINE_TYPE FUNCTION
+SPECIFIC_CATALOG def
+SPECIFIC_SCHEMA test
+SPECIFIC_NAME f2
+ORDINAL_POSITION 1
+PARAMETER_MODE IN
+PARAMETER_NAME a
+DATA_TYPE int
+CHARACTER_MAXIMUM_LENGTH NULL
+CHARACTER_OCTET_LENGTH NULL
+NUMERIC_PRECISION 10
+NUMERIC_SCALE 0
+DATETIME_PRECISION NULL
+CHARACTER_SET_NAME NULL
+COLLATION_NAME NULL
+DTD_IDENTIFIER int(11)
+ROUTINE_TYPE FUNCTION
+UPDATE mysql.proc SET type='FUNCTION' WHERE name='f1' AND db='test';
+EXECUTE IMMEDIATE CONCAT('ALTER TABLE mysql.proc MODIFY type ', @type0);
+SHOW COLUMNS IN mysql.proc LIKE 'type';
+Field Type Null Key Default Extra
+type enum('FUNCTION','PROCEDURE','PACKAGE','PACKAGE BODY') NO PRI NULL
+DROP FUNCTION f1;
+DROP FUNCTION f2;
diff --git a/mysql-test/t/sp-destruct.test b/mysql-test/t/sp-destruct.test
index 31da235d906..c0a83b12206 100644
--- a/mysql-test/t/sp-destruct.test
+++ b/mysql-test/t/sp-destruct.test
@@ -285,3 +285,38 @@ create database mysqltest1;
create procedure mysqltest1.foo() select "foo";
update mysql.proc set name='' where db='mysqltest1';
drop database mysqltest1;
+
+
+--echo #
+--echo # MDEV-15444 Querying I_S.PARAMETERS can crash with a corrupted mysql.proc
+--echo #
+
+CREATE OR REPLACE FUNCTION f1 (a INT) RETURNS INT RETURN 10;
+CREATE OR REPLACE FUNCTION f2 (a INT) RETURNS INT RETURN 10;
+
+# Get the current data type for mysql.proc.type
+--vertical_results
+SELECT
+ @type0:=COLUMN_TYPE AS t0,
+ @type1:=REPLACE(COLUMN_TYPE,')',',''XXX'')') AS t1
+ FROM INFORMATION_SCHEMA.COLUMNS
+WHERE table_schema='mysql' AND table_name='proc' AND column_name='type';
+--horizontal_results
+
+# Change mysql.proc.type and update the record for 'f1'
+EXECUTE IMMEDIATE CONCAT('ALTER TABLE mysql.proc MODIFY type ', @type1);
+SHOW COLUMNS IN mysql.proc LIKE 'type';
+UPDATE mysql.proc SET type='XXX' WHERE name='f1' AND db='test';
+
+# Check the I_S query
+--vertical_results
+SELECT * FROM INFORMATION_SCHEMA.PARAMETERS WHERE SPECIFIC_SCHEMA='test';
+--horizontal_results
+
+# Restore the record for 'f1' and restore mysql.proc.type
+UPDATE mysql.proc SET type='FUNCTION' WHERE name='f1' AND db='test';
+EXECUTE IMMEDIATE CONCAT('ALTER TABLE mysql.proc MODIFY type ', @type0);
+SHOW COLUMNS IN mysql.proc LIKE 'type';
+
+DROP FUNCTION f1;
+DROP FUNCTION f2;