1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
2 
3 struct S {
4   template <typename Ty = char>
5   static_assert(sizeof(Ty) != 1, "Not a char"); // expected-error {{a static_assert declaration cannot be a template}}
6 };
7 
8 template <typename Ty = char>
9 static_assert(sizeof(Ty) != 1, "Not a char"); // expected-error {{a static_assert declaration cannot be a template}}
10 
11 namespace Ellipsis {
12   template<typename ...T> void f(T t..., int n); // expected-error {{must immediately precede declared identifier}}
13   template<typename ...T> void f(int n, T t...); // expected-error {{must immediately precede declared identifier}}
14   template<typename ...T> void f(int n, T t, ...); // expected-error {{unexpanded parameter pack}}
f()15   template<typename ...T> void f() {
16     f([]{
17       void g(T
18              t // expected-note {{place '...' immediately before declared identifier to declare a function parameter pack}}
19              ... // expected-warning {{'...' in this location creates a C-style varargs function, not a function parameter pack}}
20              // expected-note@-1 {{insert ',' before '...' to silence this warning}}
21              );
22       void h(T (&
23               ) // expected-note {{place '...' here to declare a function parameter pack}}
24              ... // expected-warning {{'...' in this location creates a C-style varargs function, not a function parameter pack}}
25              // expected-note@-1 {{insert ',' before '...' to silence this warning}}
26              );
27       void i(T (&), ...);
28     }...);
29   }
30   template<typename ...T> struct S {
31     void f(T t...); // expected-error {{must immediately precede declared identifier}}
32     void f(T ... // expected-note {{preceding '...' declares a function parameter pack}}
33            t...); // expected-warning-re {{'...' in this location creates a C-style varargs function{{$}}}}
34            // expected-note@-1 {{insert ',' before '...' to silence this warning}}
35   };
36 
37   // FIXME: We should just issue a single error in this case pointing out where
38   // the '...' goes. It's tricky to recover correctly in this case, though,
39   // because the parameter is in scope in the default argument, so must be
40   // passed to Sema before we reach the ellipsis.
41   template<typename...T> void f(T n = 1 ...);
42   // expected-warning@-1 {{creates a C-style varargs}}
43   // expected-note@-2 {{place '...' immediately before declared identifier}}
44   // expected-note@-3 {{insert ','}}
45   // expected-error@-4 {{unexpanded parameter pack}}
46 }
47