1 // RUN: %clang_cc1 %s -fsyntax-only -verify -std=c++11
2 
3 // base-clause:
4 //         : base-specifier-list
5 // base-specifier-list:
6 //         base-specifier ...[opt]
7 //         base-specifier-list , base-specifier ...[opt]
8 // base-specifier:
9 //         attribute-specifier-seq[opt] base-type-specifier
10 //         attribute-specifier-seq[opt] virtual access-specifier[opt] base-type-specifier
11 //         attribute-specifier-seq[opt] access-specifier virtual[opt] base-type-specifier
12 // class-or-decltype:
13 //         nested-name-specifier[opt] class-name
14 //         decltype-specifier
15 // base-type-specifier:
16 //         class-or-decltype
17 // access-specifier:
18 //         private
19 //         protected
20 //         public
21 
22 namespace PR11216 {
23   struct Base { };
24   struct Derived : decltype(Base()) { };
25 
26   int func();
27   struct Derived2 : decltype(func()) { }; // expected-error {{base specifier must name a class}}
28 
29   template<typename T>
30   struct Derived3 : decltype(T().foo()) { };
31   struct Foo { Base foo(); };
32   Derived3<Foo> d;
33 
34   struct Derived4 : :: decltype(Base()) { }; // expected-error {{unexpected namespace scope prior to decltype}}
35 
36   struct Derived5 : PR11216:: decltype(Base()) { }; // expected-error {{unexpected namespace scope prior to decltype}}
37 
38   template<typename T>
39   struct Derived6 : typename T::foo { }; // expected-error {{'typename' is redundant; base classes are implicitly types}}
40 }
41