2 files changed, 42 insertions, 0 deletions
diff --git a/src/test/regress/expected/inherit.out b/src/test/regress/expected/inherit.out
index 59583e1e417..08d93884d87 100644
--- a/src/test/regress/expected/inherit.out
+++ b/src/test/regress/expected/inherit.out
@@ -2430,6 +2430,27 @@ NOTICE:  drop cascades to 2 other objects
 DETAIL:  drop cascades to table inh_multiparent
 drop cascades to table inh_multiparent2
 --
+-- Mixed ownership inheritance tree
+--
+create role regress_alice;
+create role regress_bob;
+grant all on schema public to regress_alice, regress_bob;
+grant regress_alice to regress_bob;
+set session authorization regress_alice;
+create table inh_parent (a int not null);
+set session authorization regress_bob;
+create table inh_child () inherits (inh_parent);
+set session authorization regress_alice;
+-- alice can't do this: she doesn't own inh_child
+alter table inh_parent alter a drop not null;
+ERROR:  must be owner of table inh_child
+set session authorization regress_bob;
+alter table inh_parent alter a drop not null;
+reset session authorization;
+drop table inh_parent, inh_child;
+revoke all on schema public from regress_alice, regress_bob;
+drop role regress_alice, regress_bob;
+--
 -- Check use of temporary tables with inheritance trees
 --
 create table inh_perm_parent (a1 int);
diff --git a/src/test/regress/sql/inherit.sql b/src/test/regress/sql/inherit.sql
index abe8602682c..3d57c7ee950 100644
--- a/src/test/regress/sql/inherit.sql
+++ b/src/test/regress/sql/inherit.sql
@@ -921,6 +921,27 @@ select conrelid::regclass, contype, conname,
 drop table inh_p1, inh_p2, inh_p3, inh_p4 cascade;
 
 --
+-- Mixed ownership inheritance tree
+--
+create role regress_alice;
+create role regress_bob;
+grant all on schema public to regress_alice, regress_bob;
+grant regress_alice to regress_bob;
+set session authorization regress_alice;
+create table inh_parent (a int not null);
+set session authorization regress_bob;
+create table inh_child () inherits (inh_parent);
+set session authorization regress_alice;
+-- alice can't do this: she doesn't own inh_child
+alter table inh_parent alter a drop not null;
+set session authorization regress_bob;
+alter table inh_parent alter a drop not null;
+reset session authorization;
+drop table inh_parent, inh_child;
+revoke all on schema public from regress_alice, regress_bob;
+drop role regress_alice, regress_bob;
+
+--
 -- Check use of temporary tables with inheritance trees
 --
 create table inh_perm_parent (a1 int);