1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
| // RUN: %clang_cc1 -verify -fsyntax-only -std=c++2a -pedantic-errors -triple x86_64-linux-gnu %s
// Make sure we know these are legitimate commas and not typos for ';'.
namespace Commas {
int a,
b [[ ]],
c alignas(double);
}
struct S {};
enum E { e, };
auto f() -> struct S {
return S();
}
auto g() -> enum E {
return E();
}
int decltype(f())::*ptr_mem_decltype;
class ExtraSemiAfterMemFn {
// Due to a peculiarity in the C++11 grammar, a deleted or defaulted function
// is permitted to be followed by either one or two semicolons.
void f() = delete // expected-error {{expected ';' after delete}}
void g() = delete; // ok
void h() = delete;; // ok
void i() = delete;;; // expected-error {{extra ';' after member function definition}}
};
int *const const p = 0; // expected-error {{duplicate 'const' declaration specifier}}
const const int *q = 0; // expected-error {{duplicate 'const' declaration specifier}}
struct MultiCV {
void f() const const; // expected-error {{duplicate 'const' declaration specifier}}
};
static_assert(something, ""); // expected-error {{undeclared identifier}}
// PR9903
struct SS {
typedef void d() = default; // expected-error {{function definition declared 'typedef'}} expected-error {{only special member functions and comparison operators may be defaulted}}
};
using PR14855 = int S::; // expected-error {{expected ';' after alias declaration}}
// Ensure that 'this' has a const-qualified type in a trailing return type for
// a constexpr function.
struct ConstexprTrailingReturn {
int n;
constexpr auto f() const -> decltype((n));
};
constexpr const int &ConstexprTrailingReturn::f() const { return n; }
namespace TestIsValidAfterTypeSpecifier {
struct s {} v;
struct s
thread_local tl;
struct s
&r0 = v;
struct s
&&r1 = s();
struct s
bitand r2 = v;
struct s
and r3 = s();
enum E {};
enum E
[[]] e;
}
namespace PR5066 {
using T = int (*f)(); // expected-error {{type-id cannot have a name}}
template<typename T> using U = int (*f)(); // expected-error {{type-id cannot have a name}}
auto f() -> int (*f)(); // expected-error {{only variables can be initialized}} expected-error {{expected ';'}}
auto g = []() -> int (*f)() {}; // expected-error {{type-id cannot have a name}}
}
namespace FinalOverride {
struct Base {
virtual void *f();
virtual void *g();
virtual void *h();
virtual void *i();
};
struct Derived : Base {
virtual auto f() -> void *final;
virtual auto g() -> void *override;
virtual auto h() -> void *final override;
virtual auto i() -> void *override final;
};
}
namespace UsingDeclAttrs {
using T __attribute__((aligned(1))) = int;
using T [[gnu::aligned(1)]] = int;
static_assert(alignof(T) == 1, "");
using [[gnu::aligned(1)]] T = int; // expected-error {{an attribute list cannot appear here}}
using T = int [[gnu::aligned(1)]]; // expected-error {{'aligned' attribute cannot be applied to types}}
}
namespace DuplicateSpecifier {
constexpr constexpr int f(); // expected-error {{duplicate 'constexpr' declaration specifier}}
constexpr int constexpr a = 0; // expected-error {{duplicate 'constexpr' declaration specifier}}
struct A {
friend constexpr int constexpr friend f(); // expected-warning {{duplicate 'friend' declaration specifier}} \
// expected-error {{duplicate 'constexpr' declaration specifier}}
friend struct A friend; // expected-warning {{duplicate 'friend'}} expected-error {{'friend' must appear first}}
};
constinit constexpr int n1 = 0; // expected-error {{cannot combine with previous 'constinit'}}
constexpr constinit int n2 = 0; // expected-error {{cannot combine with previous 'constexpr'}}
constinit constinit int n3 = 0; // expected-error {{duplicate 'constinit' declaration specifier}}
consteval constexpr int f1(); // expected-error {{cannot combine with previous 'consteval'}}
constexpr consteval int f2(); // expected-error {{cannot combine with previous 'constexpr'}}
consteval consteval int f3(); // expected-error {{duplicate 'consteval' declaration specifier}}
constinit consteval int wat = 0; // expected-error {{cannot combine with previous 'constinit'}}
consteval constinit int huh(); // expected-error {{cannot combine with previous 'consteval'}}
}
namespace ColonColonDecltype {
struct S { struct T {}; };
::decltype(S())::T invalid; // expected-error {{expected unqualified-id}}
}
namespace AliasDeclEndLocation {
template<typename T> struct A {};
// Ensure that we correctly determine the end of this declaration to be the
// end of the annotation token, not the beginning.
using B = AliasDeclEndLocation::A<int
> // expected-error {{expected ';' after alias declaration}}
+;
using C = AliasDeclEndLocation::A<int
>\
> // expected-error {{expected ';' after alias declaration}}
;
using D = AliasDeclEndLocation::A<int
> // expected-error {{expected ';' after alias declaration}}
// FIXME: After splitting this >> into two > tokens, we incorrectly determine
// the end of the template-id to be after the *second* '>'.
using E = AliasDeclEndLocation::A<int>>;
#define GGG >>>
using F = AliasDeclEndLocation::A<int GGG;
// expected-error@-1 {{expected ';' after alias declaration}}
B something_else;
}
struct Base { virtual void f() = 0; virtual void g() = 0; virtual void h() = 0; };
struct MemberComponentOrder : Base {
void f() override __asm__("foobar") __attribute__(( )) {}
void g() __attribute__(( )) override;
void h() __attribute__(( )) override {}
};
void NoMissingSemicolonHere(struct S
[3]);
template<int ...N> void NoMissingSemicolonHereEither(struct S
... [N]);
// This must be at the end of the file; we used to look ahead past the EOF token here.
// expected-error@+1 {{expected unqualified-id}} expected-error@+1{{expected ';'}}
using
|