MDEV-9683 Server crashes in Item::basic_const_item on numerous nested NULLIFs

vuvova · vuvova · commit 33d298493df7 · 2016-03-05T16:25:30.000+01:00
test case only
diff --git a/mysql-test/r/null.result b/mysql-test/r/null.result
@@ -1566,6 +1566,11 @@ f1
 EXECUTE stmt;
 f1
 DROP TABLE t1;
+CREATE TABLE t1 (i INT);
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 WHERE NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(i = ROUND(0), 14), 13), 12), 11), 10), 9), 8), 7), 6), 5), 4), 3), 2), 1);
+i
+DROP TABLE t1;
 #
 # End of 10.1 tests
 #
diff --git a/mysql-test/t/null.test b/mysql-test/t/null.test
@@ -997,6 +997,16 @@ PREPARE stmt FROM "SELECT * FROM t1 WHERE NULLIF( ( 1, 2 ) IN ( SELECT 3, 4 ), 1
 EXECUTE stmt;
 EXECUTE stmt;
 DROP TABLE t1;
+
+#
+# MDEV-9683 Server crashes in Item::basic_const_item on numerous nested NULLIFs
+#
+CREATE TABLE t1 (i INT);
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 WHERE NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(i = ROUND(0), 14), 13), 12), 11), 10), 9), 8), 7), 6), 5), 4), 3), 2), 1);
+DROP TABLE t1;
+
+
 --echo #
 --echo # End of 10.1 tests
 --echo #

Original file line number	Diff line number	Diff line change
`@@ -1566,6 +1566,11 @@ f1`
`1566`	`1566`	`EXECUTE stmt;`
`1567`	`1567`	`f1`
`1568`	`1568`	`DROP TABLE t1;`
	`1569`	`+CREATE TABLE t1 (i INT);`
	`1570`	`+INSERT INTO t1 VALUES (1),(2);`
	`1571`	`+SELECT * FROM t1 WHERE NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(NULLIF(i = ROUND(0), 14), 13), 12), 11), 10), 9), 8), 7), 6), 5), 4), 3), 2), 1);`
	`1572`	`+i`
	`1573`	`+DROP TABLE t1;`
`1569`	`1574`	`#`
`1570`	`1575`	`# End of 10.1 tests`
`1571`	`1576`	`#`