1// RUN: %clang_cc1 -verify -fsyntax-only -std=c++11 -pedantic-errors -triple x86_64-linux-gnu %s
2
3// Make sure we know these are legitimate commas and not typos for ';'.
4namespace Commas {
5  int a,
6  b [[ ]],
7  c alignas(double);
8}
9
10struct S {};
11enum E { e, };
12
13auto f() -> struct S {
14  return S();
15}
16auto g() -> enum E {
17  return E();
18}
19
20int decltype(f())::*ptr_mem_decltype;
21
22class ExtraSemiAfterMemFn {
23  // Due to a peculiarity in the C++11 grammar, a deleted or defaulted function
24  // is permitted to be followed by either one or two semicolons.
25  void f() = delete // expected-error {{expected ';' after delete}}
26  void g() = delete; // ok
27  void h() = delete;; // ok
28  void i() = delete;;; // expected-error {{extra ';' after member function definition}}
29};
30
31int *const const p = 0; // expected-error {{duplicate 'const' declaration specifier}}
32const const int *q = 0; // expected-error {{duplicate 'const' declaration specifier}}
33
34struct MultiCV {
35  void f() const const; // expected-error {{duplicate 'const' declaration specifier}}
36};
37
38static_assert(something, ""); // expected-error {{undeclared identifier}}
39
40// PR9903
41struct SS {
42  typedef void d() = default; // expected-error {{function definition declared 'typedef'}} expected-error {{only special member functions may be defaulted}}
43};
44
45using PR14855 = int S::; // expected-error {{expected ';' after alias declaration}}
46
47// Ensure that 'this' has a const-qualified type in a trailing return type for
48// a constexpr function.
49struct ConstexprTrailingReturn {
50  int n;
51  constexpr auto f() const -> decltype((n));
52};
53constexpr const int &ConstexprTrailingReturn::f() const { return n; }
54
55namespace TestIsValidAfterTypeSpecifier {
56struct s {} v;
57
58struct s
59thread_local tl;
60
61struct s
62&r0 = v;
63
64struct s
65&&r1 = s();
66
67struct s
68bitand r2 = v;
69
70struct s
71and r3 = s();
72
73enum E {};
74enum E
75[[]] e;
76
77}
78
79namespace PR5066 {
80  using T = int (*f)(); // expected-error {{type-id cannot have a name}}
81  template<typename T> using U = int (*f)(); // expected-error {{type-id cannot have a name}}
82  auto f() -> int (*f)(); // expected-error {{type-id cannot have a name}}
83  auto g = []() -> int (*f)() {}; // expected-error {{type-id cannot have a name}}
84}
85
86namespace FinalOverride {
87  struct Base {
88    virtual void *f();
89    virtual void *g();
90    virtual void *h();
91    virtual void *i();
92  };
93  struct Derived : Base {
94    virtual auto f() -> void *final;
95    virtual auto g() -> void *override;
96    virtual auto h() -> void *final override;
97    virtual auto i() -> void *override final;
98  };
99}
100
101namespace UsingDeclAttrs {
102  using T __attribute__((aligned(1))) = int;
103  using T [[gnu::aligned(1)]] = int;
104  static_assert(alignof(T) == 1, "");
105
106  using [[gnu::aligned(1)]] T = int; // expected-error {{an attribute list cannot appear here}}
107  using T = int [[gnu::aligned(1)]]; // expected-error {{'aligned' attribute cannot be applied to types}}
108}
109
110namespace DuplicateSpecifier {
111  constexpr constexpr int f(); // expected-warning {{duplicate 'constexpr' declaration specifier}}
112  constexpr int constexpr a = 0; // expected-warning {{duplicate 'constexpr' declaration specifier}}
113
114  struct A {
115    friend constexpr int constexpr friend f(); // expected-warning {{duplicate 'friend' declaration specifier}} \
116                                               // expected-warning {{duplicate 'constexpr' declaration specifier}}
117    friend struct A friend; // expected-warning {{duplicate 'friend'}} expected-error {{'friend' must appear first}}
118  };
119}
120
121namespace ColonColonDecltype {
122  struct S { struct T {}; };
123  ::decltype(S())::T invalid; // expected-error {{expected unqualified-id}}
124}
125
126struct Base { virtual void f() = 0; virtual void g() = 0; virtual void h() = 0; };
127struct MemberComponentOrder : Base {
128  void f() override __asm__("foobar") __attribute__(( )) {}
129  void g() __attribute__(( )) override;
130  void h() __attribute__(( )) override {}
131};
132
133void NoMissingSemicolonHere(struct S
134                            [3]);
135template<int ...N> void NoMissingSemicolonHereEither(struct S
136                                                     ... [N]);
137
138// This must be at the end of the file; we used to look ahead past the EOF token here.
139// expected-error@+1 {{expected unqualified-id}}
140using
141