Fix diagnostic for static methods referencing fields from using decls

Previously we thought the instance member was a function, not a field,
and we'd say something silly like:
  t.cpp:4:27: error: call to non-static member function without an object argument
    static int f() { return n; }
                            ^

Noticed in PR21923.

llvm-svn: 224480

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/using-decl-1.cpp b/clang/test/SemaCXX/using-decl-1.cpp
index 40f80a70ef3..e730c9d63a2 100644
--- a/clang/test/SemaCXX/using-decl-1.cpp
+++ b/clang/test/SemaCXX/using-decl-1.cpp
@@ -255,3 +255,11 @@ namespace TypoCorrectTemplateMember {
     using A::goobar; // expected-error {{no member named 'goobar' in 'TypoCorrectTemplateMember::A'; did you mean 'foobar'?}}
   };
 }
+
+namespace use_instance_in_static {
+struct A { int n; };
+struct B : A {
+  using A::n;
+  static int f() { return n; } // expected-error {{invalid use of member 'n' in static member function}}
+};
+}