MDEV-37653 Unexpected result of prepared statement when use boolean value as parameters

IS TRUE and IS FALSE are only null-rejecting on the top level,
consider, e.g. NOT (X IS TRUE)

Author: vuvova

mysql-test/main/join_outer.result

@@ -2911,4 +2911,19 @@ Z	1	Y	1	X	1
 drop view v0, v1, v2, v3;
 drop table t1, t2, t3;
 # end of 10.3 tests
+#
+# MDEV-37653 Unexpected result of prepared statement when use boolean value as parameters
+#
+create table t0(c0 real);
+create table t1 like t0;
+insert into t1 values (1);
+insert into t0 values (1);
+select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is true);
+c0	c0
+1	NULL
+select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is false);
+c0	c0
+1	NULL
+drop table t0, t1;
+# end of 10.11 tests
 SET optimizer_switch=@org_optimizer_switch;

mysql-test/main/join_outer.test

@@ -2434,4 +2434,17 @@ drop table t1, t2, t3;
 
 --echo # end of 10.3 tests
 
+--echo #
+--echo # MDEV-37653 Unexpected result of prepared statement when use boolean value as parameters
+--echo #
+create table t0(c0 real);
+create table t1 like t0;
+insert into t1 values (1);
+insert into t0 values (1);
+select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is true);
+select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is false);
+drop table t0, t1;
+
+--echo # end of 10.11 tests
+
 SET optimizer_switch=@org_optimizer_switch;

mysql-test/main/join_outer_jcl6.result

@@ -2918,4 +2918,19 @@ Z	1	Y	1	X	1
 drop view v0, v1, v2, v3;
 drop table t1, t2, t3;
 # end of 10.3 tests
+#
+# MDEV-37653 Unexpected result of prepared statement when use boolean value as parameters
+#
+create table t0(c0 real);
+create table t1 like t0;
+insert into t1 values (1);
+insert into t0 values (1);
+select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is true);
+c0	c0
+1	NULL
+select t1.c0, t0.c0 from t1 left join t0 on 0 where not (t0.c0 is false);
+c0	c0
+1	NULL
+drop table t0, t1;
+# end of 10.11 tests
 SET optimizer_switch=@org_optimizer_switch;

sql/item_cmpfunc.h

@@ -266,6 +266,8 @@ class Item_func_truth : public Item_bool_func
   bool fix_length_and_dec(THD *thd) override;
   void print(String *str, enum_query_type query_type) override;
   enum precedence precedence() const override { return CMP_PRECEDENCE; }
+  table_map not_null_tables() const override
+  { return is_top_level_item() ? not_null_tables_cache : 0; }
 
 protected:
   Item_func_truth(THD *thd, Item *a, bool a_value, bool a_affirmative):