Improve error message when referencing a non-tag type with a tag

Other compilers accept invalid code here that we reject, and we need a
better error message to try to convince users that the code is really
incorrect. Consider:
  class Foo {
    typedef MyIterHelper<Foo> iterator;
    friend class iterator;
  };

Previously our wording was "elaborated type refers to a typedef".
"elaborated type" isn't widely known terminology, so the new diagnostic
says "typedef 'iterator' cannot be referenced with class specifier".

Reviewers: rsmith

Differential Revision: https://reviews.llvm.org/D25216

llvm-svn: 289259

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/test/SemaTemplate/template-id-expr.cpp b/clang/test/SemaTemplate/template-id-expr.cpp
index 499d289ee67..e311b5832d0 100644
--- a/clang/test/SemaTemplate/template-id-expr.cpp
+++ b/clang/test/SemaTemplate/template-id-expr.cpp
@@ -100,5 +100,5 @@ template void f5<0>(); // expected-note {{in instantiation of function template
 class C {};
 template <template <typename> class D>  // expected-note{{previous use is here}}
 class E {
-  template class D<C>;  // expected-error {{elaborated type refers to a template template argument}}
+  template class D<C>;  // expected-error {{template template argument 'D' cannot be referenced with a class specifier}}
 };