Skip transparent contexts when performing C++ name lookup

llvm-svn: 79931
diff --git a/clang/test/SemaCXX/linkage-spec.cpp b/clang/test/SemaCXX/linkage-spec.cpp
index 864953e..b4c72f5 100644
--- a/clang/test/SemaCXX/linkage-spec.cpp
+++ b/clang/test/SemaCXX/linkage-spec.cpp
@@ -25,3 +25,11 @@
 // <rdar://problem/6895431>
 extern "C" struct bar d;
 extern struct bar e;
+
+extern "C++" {
+  namespace N0 {
+    struct X0 {
+      int foo(int x) { return x; }
+    };
+  }
+}
\ No newline at end of file