Allow us to compare derived-to-base conversions between a reference
binding and a copy-construction. Fixes an overloading problem in the
Clang-on-Clang build.

llvm-svn: 97161
diff --git a/clang/test/SemaCXX/overload-call.cpp b/clang/test/SemaCXX/overload-call.cpp
index 38a26d3..364011c 100644
--- a/clang/test/SemaCXX/overload-call.cpp
+++ b/clang/test/SemaCXX/overload-call.cpp
@@ -373,3 +373,16 @@
     }
   };
 }
+
+namespace DerivedToBase {
+  struct A { };
+  struct B : A { };
+  struct C : B { };
+  
+  int &f0(const A&);
+  float &f0(B);
+  
+  void g() {
+    float &fr = f0(C());
+  }
+}