Adding test case for #2872.

Examples/test-suite/java/using_member_multiple_inherit_runme.java

@@ -42,5 +42,10 @@ public class using_member_multiple_inherit_runme {
     mb.multmethod("hi");
     mb.multmethod(123, 234);
     mb.multmethod(123, 345, 567);
+
+    // Multiple inheritance, with no override on parent class. 
+    Vusing2 vu = new Vusing2();
+    vu.usingmethod(3);
+    vu.usingmethod("hi");
   }
 }

Examples/test-suite/python/using_member_multiple_inherit_runme.py

@@ -30,3 +30,8 @@ mb.multmethod(123)
 mb.multmethod("hi")
 mb.multmethod(123, 234)
 mb.multmethod(123, 345, 567)
+
+# Multiple inheritance, with no override on parent class. 
+vu = Vusing2()
+vu.usingmethod(3)
+vu.usingmethod("hi")

Examples/test-suite/using_member_multiple_inherit.i

@@ -107,6 +107,23 @@ void cplusplus_testB() {
   m.multmethod(123, 345, 567);
 }
 
+// Multiple inheritance, with no override on parent class. 
+// This checks a corner case with fvirtual and using
+// See #2872
+class Vusing {
+public:
+  virtual void usingmethod(int i) {}
+};
+class Vusing1 : public Vusing {
+public:
+  virtual void usingmethod(int i) {}
+};
+class Vusing2 : public Vusing1 {
+public:
+  using Vusing1::usingmethod;
+  virtual void usingmethod(const char* c) {};
+};
+
 /* TODO: fix when using declaration is declared before method, for example change MultMiddleA to:
 struct MultMiddleB : Mult1, Mult2 {
 protected: // Note!