Fix for PR7694: make sure to pass in a RecordType to CheckBaseClassAccess;

fixes crashes on both valid and invalid code.  The diagnostic here could
potentially be improved, but it's good enough as-is.

llvm-svn: 109257

clang/lib/Sema/SemaCXXCast.cpp

@@ -900,7 +900,7 @@ TryStaticMemberPointerUpcast(Sema &Self, Expr *&SrcExpr, QualType SrcType,
   }
 
   if (!CStyle && Self.CheckBaseClassAccess(OpRange.getBegin(),
-                                           DestType, SrcType,
+                                           DestClass, SrcClass,
                                            Paths.front(),
                                      diag::err_upcast_to_inaccessible_base)) {
     msg = 0;

clang/test/SemaCXX/access-member-pointer.cpp

@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+// PR7694
+
+class A { };
+class B : private A { public: void foo(); }; // expected-note {{declared private here}}
+void B::foo() {
+  (void)static_cast<void(A::*)()>(&B::foo);
+}
+void bar() {
+  (void)static_cast<void(A::*)()>(&B::foo); // expected-error {{cannot cast 'B' to its private base class 'A'}}
+}