p5.cpp revision 24d44eddfc98464d10802e71c77d3dc3e45f4aac 
1// RUN: %clang_cc1 -fexceptions -fsyntax-only -verify %s -std=c++0x
2
3struct S {
4  virtual ~S();
5
6  auto a; // expected-error{{'auto' not allowed in struct member}}
7  auto *b; // expected-error{{'auto' not allowed in struct member}}
8  const auto c; // expected-error{{'auto' not allowed in struct member}}
9
10  void f() throw (auto); // expected-error{{'auto' not allowed here}}
11
12  friend auto; // expected-error{{'auto' not allowed in struct member}}
13
14  operator auto(); // expected-error{{'auto' not allowed here}}
15};
16
17// PR 9278: auto is not allowed in typedefs, except with a trailing return type.
18typedef auto *AutoPtr; // expected-error{{'auto' not allowed in typedef}}
19typedef auto Fun(int a) -> decltype(a + a);
20
21void g(auto a) { // expected-error{{'auto' not allowed in function prototype}}
22  try { }
23  catch (auto &a) { } // expected-error{{'auto' not allowed in exception declaration}}
24  catch (const auto a) { } // expected-error{{'auto' not allowed in exception declaration}}
25  try { } catch (auto a) { } // expected-error{{'auto' not allowed in exception declaration}}
26}
27
28void h(auto a[10]) { // expected-error{{'auto' not allowed in function prototype}}
29}
30
31void i(const auto a) { // expected-error{{'auto' not allowed in function prototype}}
32}
33
34namespace std {
35  class type_info;
36}
37
38template<typename T> struct U {};
39
40void j() {
41  (void)typeid(auto); // expected-error{{'auto' not allowed here}}
42  (void)sizeof(auto); // expected-error{{'auto' not allowed here}}
43  (void)__alignof(auto); // expected-error{{'auto' not allowed here}}
44
45  // FIXME: don't issue the second diagnostic for this error.
46  U<auto> v; // expected-error{{'auto' not allowed in template argument}} unexpected-error{{C++ requires a type specifier}}
47
48  int n;
49  (void)dynamic_cast<auto&>(S()); // expected-error{{'auto' not allowed here}}
50  (void)static_cast<auto*>(&n); // expected-error{{'auto' not allowed here}}
51  (void)reinterpret_cast<auto*>(&n); // expected-error{{'auto' not allowed here}}
52  (void)const_cast<auto>(n); // expected-error{{'auto' not allowed here}}
53  (void)*(auto*)(&n); // expected-error{{'auto' not allowed here}}
54  (void)auto(n); // expected-error{{expected expression}}
55  (void)auto{n}; // expected-error{{expected expression}}
56}
57
58template <auto a = 10> class C { }; // expected-error{{'auto' not allowed in template parameter}}
59int ints[] = {1, 2, 3};
60template <const auto (*a)[3] = &ints> class D { }; // expected-error{{'auto' not allowed in template parameter}}
61enum E : auto {}; // expected-error{{'auto' not allowed here}}
62struct F : auto {}; // expected-error{{expected class name}}
63template<typename T = auto> struct G { }; // expected-error{{'auto' not allowed here}}
64
65using A = auto; // expected-error{{expected ';'}} expected-error{{requires a qualified name}}
66
67// Whether this is illegal depends on the interpretation of [decl.spec.auto]p2 and p3,
68// and in particular the "Otherwise, ..." at the start of p3.
69namespace TrailingReturnType {
70  // FIXME: don't issue the second diagnostic for this error.
71  auto f() -> auto; // expected-error{{'auto' not allowed here}} unexpected-error{{without trailing return type}}
72  int g();
73  auto (*h)() -> auto = &g; // expected-error{{'auto' not allowed here}}
74  auto (*i)() = &g; // ok; auto deduced as int.
75  auto (*j)() -> int = i; // ok; no deduction.
76}
77