| 1 | // RUN: %clang_cc1 %s -Eonly -verify -Wno-all -pedantic -std=c++2a
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| 2 |
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| 3 | //expected-error@+1{{missing '('}}
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| 4 | #define V1(...) __VA_OPT__
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| 5 | #undef V1
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| 6 | // OK
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| 7 | #define V1(...) __VA_OPT__ ()
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| 8 | #undef V1
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| 9 |
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| 10 | //expected-warning@+1{{can only appear in the expansion of a variadic macro}}
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| 11 | #define V2() __VA_OPT__(x)
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| 12 | #undef V2
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| 13 |
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| 14 | //expected-error@+2{{missing ')' after}}
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| 15 | //expected-note@+1{{to match this '('}}
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| 16 | #define V3(...) __VA_OPT__(
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| 17 | #undef V3
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| 18 |
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| 19 | #define V4(...) __VA_OPT__(__VA_ARGS__)
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| 20 | #undef V4
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| 21 |
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| 22 | //expected-error@+1{{nested}}
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| 23 | #define V5(...) __VA_OPT__(__VA_OPT__())
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| 24 | #undef V5
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| 25 |
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| 26 | //expected-error@+1{{not followed by}}
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| 27 | #define V1(...) __VA_OPT__ (#)
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| 28 | #undef V1
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| 29 |
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| 30 | //expected-error@+1{{cannot appear at start}}
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| 31 | #define V1(...) __VA_OPT__ (##)
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| 32 | #undef V1
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| 33 |
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| 34 | //expected-error@+1{{cannot appear at start}}
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| 35 | #define V1(...) __VA_OPT__ (## X) x
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| 36 | #undef V1
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| 37 |
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| 38 | //expected-error@+1{{cannot appear at end}}
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| 39 | #define V1(...) y __VA_OPT__ (X ##)
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| 40 | #undef V1
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| 41 |
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| 42 |
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| 43 | #define FOO(x,...) # __VA_OPT__(x) #x #__VA_OPT__(__VA_ARGS__) //OK
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| 44 |
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| 45 | //expected-error@+1{{not followed by a macro parameter}}
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| 46 | #define V1(...) __VA_OPT__(#)
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| 47 | #undef V1
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| 48 |
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| 49 | //expected-error@+1{{cannot appear at start}}
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| 50 | #define V1(...) a __VA_OPT__(##) b
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| 51 | #undef V1
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| 52 |
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| 53 | //expected-error@+1{{cannot appear at start}}
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| 54 | #define V1(...) a __VA_OPT__(a ## b) b __VA_OPT__(##)
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| 55 | #undef V1
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| 56 |
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| 57 | #define V1(x,...) # __VA_OPT__(b x) // OK
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| 58 | #undef V1
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| 59 |
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| 60 | //expected-error@+2{{missing ')' after}}
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| 61 | //expected-note@+1{{to match this '('}}
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| 62 | #define V1(...) __VA_OPT__ ((())
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| 63 | #undef V1
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| 64 |
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| 65 | |
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