1 files changed, 48 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/thunk3.C b/gcc/testsuite/g++.dg/opt/thunk3.C
new file mode 100644
index 000000000..bfd68744a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/thunk3.C
@@ -0,0 +1,48 @@
+// PR c++/39106
+// { dg-do compile }
+// { dg-options "-O2" }
+
+extern "C" void abort ();
+
+struct A
+{
+  A (bool x = true);
+};
+class B
+{
+  virtual bool bar (A &, int) const =0;
+};
+class C : virtual public B
+{
+};
+struct D : virtual public B
+{
+  bool bar (A &, int) const;
+};
+template <int N>
+struct E : public D
+{
+  bool bar (A &x, int y) const
+  {
+    return baz().bar (x, y);
+  }
+  const D & baz () const;
+};
+extern template class E<0>;
+
+void
+foo ()
+{
+  try
+  {
+    A a;
+    abort ();
+  } catch (...)
+  {
+  }
+  A b;
+  E<0> c;
+  c.bar (b, 3);
+  E<0> d;
+  d.bar (b, 3);
+}