--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.old-deja/g++.other/virtual4.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,25 @@
+// { dg-do assemble  }
+
+class A {
+public:
+  virtual int foo() = 0; // { dg-error "" } original definition
+};
+
+class B {
+public:
+    virtual double foo() = 0;
+};
+
+class C
+  : public A, public B
+{
+public:
+  virtual double foo() { return 2; } // { dg-error "" } conflicting return type
+};
+
+class D
+  : public B, public A
+{
+public:
+  virtual double foo() { return 2; } // { dg-error "" } conflicting return type
+};