1 files changed, 85 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/abi/covariant3.C b/gcc/testsuite/g++.dg/abi/covariant3.C
new file mode 100644
index 00000000000..178157c58b2
--- /dev/null
+++ b/gcc/testsuite/g++.dg/abi/covariant3.C
@@ -0,0 +1,85 @@
+// { dg-do run }
+
+// Copyright (C) 2003 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 12 Dec 2003 <nathan@codesourcery.com>
+// Origin:  grigory@stl.sarov.ru
+
+// PR c++/13118. Missing covariant thunk.
+
+struct c0 {};
+struct c1 : virtual c0 {
+  virtual c0* f6();
+};
+
+struct c5 {
+    virtual void foo();
+};
+
+struct c10 : virtual c1 {
+    virtual void foo();
+};
+
+struct c1a : c1 {}; // disambiguation
+
+struct c11 : virtual c10, c1a {
+  int i;
+  virtual c1* f6 () = 0;
+};
+
+struct c18 : c5, virtual c1 {
+    virtual void bar();
+};
+
+struct c28 : virtual c0, virtual c11 {
+    virtual c18* f6();
+};
+
+c0 *c1::f6 () {}
+void c5::foo () {}
+void c10::foo () {}
+void c18::bar () {}
+
+c18 ret;
+
+c18 *c28::f6 ()
+{
+  return &ret;
+}
+
+bool check_c1 (c1 *ptr)
+{
+  c0 *r = ptr->f6 ();
+  return r != &ret;
+}
+bool check_c10 (c10 *ptr)
+{
+  c0 *r = ptr->f6 ();
+  return r != &ret;
+}
+bool check_c11 (c11 *ptr)
+{
+  c1 *r = ptr->f6 ();
+  return r != &ret;
+}
+bool check_c28 (c28 *ptr)
+{
+  c18 *r = ptr->f6 ();
+  return r != &ret;
+}
+
+int main ()
+{
+  c28 obj;
+  
+  if (check_c1 (static_cast<c1a *> (&obj)))
+    return 1;
+  if (check_c1 (static_cast<c10 *> (&obj)))
+    return 2;
+  if (check_c10 (&obj))
+    return 3;
+  if (check_c11 (&obj))
+    return 4;
+  if (check_c28 (&obj))
+    return 5;
+  return 0;
+}