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
|
// RUN: %clang_cc1 %s -Eonly -verify -Wno-all -pedantic -std=c++2a
//expected-error@+1{{missing '('}}
#define V1(...) __VA_OPT__
#undef V1
// OK
#define V1(...) __VA_OPT__ ()
#undef V1
//expected-warning@+1{{can only appear in the expansion of a variadic macro}}
#define V2() __VA_OPT__(x)
#undef V2
//expected-error@+2{{missing ')' after}}
//expected-note@+1{{to match this '('}}
#define V3(...) __VA_OPT__(
#undef V3
#define V4(...) __VA_OPT__(__VA_ARGS__)
#undef V4
//expected-error@+1{{nested}}
#define V5(...) __VA_OPT__(__VA_OPT__())
#undef V5
//expected-error@+1{{not followed by}}
#define V1(...) __VA_OPT__ (#)
#undef V1
//expected-error@+1{{cannot appear at start}}
#define V1(...) __VA_OPT__ (##)
#undef V1
//expected-error@+1{{cannot appear at start}}
#define V1(...) __VA_OPT__ (## X) x
#undef V1
//expected-error@+1{{cannot appear at end}}
#define V1(...) y __VA_OPT__ (X ##)
#undef V1
#define FOO(x,...) # __VA_OPT__(x) #x #__VA_OPT__(__VA_ARGS__) //OK
//expected-error@+1{{not followed by a macro parameter}}
#define V1(...) __VA_OPT__(#)
#undef V1
//expected-error@+1{{cannot appear at start}}
#define V1(...) a __VA_OPT__(##) b
#undef V1
//expected-error@+1{{cannot appear at start}}
#define V1(...) a __VA_OPT__(a ## b) b __VA_OPT__(##)
#undef V1
#define V1(x,...) # __VA_OPT__(b x) // OK
#undef V1
//expected-error@+2{{missing ')' after}}
//expected-note@+1{{to match this '('}}
#define V1(...) __VA_OPT__ ((())
#undef V1
|
