diff --git a/mysql-test/main/win.result b/mysql-test/main/win.result
index 7891c737dfd..6bdee3214bc 100644
--- a/mysql-test/main/win.result
+++ b/mysql-test/main/win.result
@@ -4794,5 +4794,18 @@ c1	c2
 2	2
 DROP TABLE t1;
 #
+# MDEV-29483 Heap-use-after-free (Binary_string::copy()) with window functions
+#
+create table t1 (c0 text, c1 int);
+insert into t1 values ('a', 1), ('b', 2);
+create table t2 (c0 text);
+insert into t2 values ('b');
+# Expected: one row 'b'
+select coalesce(c0, last_value(c0) over (order by c1)) from (select c0, c1 from t1) dt
+where c1 = 0 or c0 in (select c0 from t2);
+coalesce(c0, last_value(c0) over (order by c1))
+b
+drop table t1, t2;
+#
 # End of 10.11 tests
 #
diff --git a/mysql-test/main/win.test b/mysql-test/main/win.test
index 35f59041d3b..04c9270778c 100644
--- a/mysql-test/main/win.test
+++ b/mysql-test/main/win.test
@@ -3108,6 +3108,20 @@ from t1;
 
 DROP TABLE t1;
 
+--echo #
+--echo # MDEV-29483 Heap-use-after-free (Binary_string::copy()) with window functions
+--echo #
+create table t1 (c0 text, c1 int);
+insert into t1 values ('a', 1), ('b', 2);
+create table t2 (c0 text);
+insert into t2 values ('b');
+
+--echo # Expected: one row 'b'
+select coalesce(c0, last_value(c0) over (order by c1)) from (select c0, c1 from t1) dt
+where c1 = 0 or c0 in (select c0 from t2);
+
+drop table t1, t2;
+
 --echo #
 --echo # End of 10.11 tests
 --echo #