Patch implements ranking conversions between member pointers [over.ics.rank]

llvm-svn: 84660

1 files changed, 44 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/ptrtomember-overload-resolution.cpp b/clang/test/SemaCXX/ptrtomember-overload-resolution.cpp
new file mode 100644
index 00000000000..b3b65ce840c
--- /dev/null
+++ b/clang/test/SemaCXX/ptrtomember-overload-resolution.cpp
@@ -0,0 +1,44 @@
+// RUN: clang-cc -fsyntax-only -verify %s -std=c++0x
+
+// 13.3.3.2 Ranking implicit conversion sequences
+// conversion of A::* to B::* is better than conversion of A::* to C::*,
+struct A {
+int Ai;
+}; 
+
+struct B : public A {}; 
+struct C : public B {}; 
+
+const char * f(int C::*){ return ""; } 
+int f(int B::*) { return 1; } 
+
+struct D : public C {}; 
+
+const char * g(int B::*){ return ""; } 
+int g(int D::*) { return 1; } 
+
+void test() 
+{
+  int i = f(&A::Ai);
+
+  const char * str = g(&A::Ai);
+}
+
+// conversion of B::* to C::* is better than conversion of A::* to C::*
+typedef void (A::*pmfa)();
+typedef void (B::*pmfb)();
+typedef void (C::*pmfc)();
+
+struct X {
+	operator pmfa();
+	operator pmfb();
+};
+
+
+void g(pmfc);
+
+void test2(X x) 
+{
+    g(x);
+}
+