| // RUN: %clang_cc1 -E %s -pedantic -std=c++20 | FileCheck -strict-whitespace %s | |
| // RUN: %clang_cc1 -E %s -pedantic -std=c++11 | FileCheck -strict-whitespace %s | |
| // RUN: %clang_cc1 -E -x c %s -pedantic -std=c99 | FileCheck -strict-whitespace %s | |
| #define LPAREN ( | |
| #define RPAREN ) | |
| #define A0 expandedA0 | |
| #define A1 expandedA1 A0 | |
| #define A2 expandedA2 A1 | |
| #define A3 expandedA3 A2 | |
| #define A() B LPAREN ) | |
| #define B() C LPAREN ) | |
| #define C() D LPAREN ) | |
| #define F(x, y) x + y | |
| #define ELLIP_FUNC(...) __VA_OPT__(__VA_ARGS__) | |
| 1: ELLIP_FUNC(F, LPAREN, 'a', 'b', RPAREN); | |
| 2: ELLIP_FUNC(F LPAREN 'a', 'b' RPAREN); | |
| #undef F | |
| #undef ELLIP_FUNC | |
| // CHECK: 1: F, (, 'a', 'b', ); | |
| // CHECK: 2: 'a' + 'b'; | |
| #define F(...) f(0 __VA_OPT__(,) __VA_ARGS__) | |
| 3: F(a, b, c) // replaced by f(0, a, b, c) | |
| 4: F() // replaced by f(0) | |
| // CHECK: 3: f(0 , a, b, c) | |
| // CHECK: 4: f(0 ) | |
| #undef F | |
| #define G(X, ...) f(0, X __VA_OPT__(,) __VA_ARGS__) | |
| 5: G(a, b, c) // replaced by f(0, a , b, c) | |
| 6: G(a) // replaced by f(0, a) | |
| 7: G(a,) // replaced by f(0, a) | |
| 7.1: G(a,,) | |
| // CHECK: 5: f(0, a , b, c) | |
| // CHECK: 6: f(0, a ) | |
| // CHECK: 7: f(0, a ) | |
| // CHECK: 7.1: f(0, a , ,) | |
| #undef G | |
| #define HT_B() TONG | |
| #define F(x, ...) HT_ ## __VA_OPT__(x x A() #x) | |
| 8: F(1) | |
| 9: F(A(),1) | |
| // CHECK: 8: HT_ | |
| // CHECK: 9: TONG C ( ) B ( ) "A()" | |
| #undef HT_B | |
| #undef F | |
| #define F(a,...) #__VA_OPT__(A1 a) | |
| 10: F(A()) | |
| 11: F(A1 A(), 1) | |
| // CHECK: 10: "" | |
| // CHECK: 11: "A1 expandedA1 expandedA0 B ( )" | |
| #undef F | |
| #define F(a,...) a ## __VA_OPT__(A1 a) ## __VA_ARGS__ ## a | |
| 12.0: F() | |
| 12: F(,) | |
| 13: F(B,) | |
| // CHECK: 12.0: | |
| // CHECK: 12: | |
| // CHECK: 13: BB | |
| #undef F | |
| #define F(...) #__VA_OPT__() X ## __VA_OPT__() #__VA_OPT__( ) | |
| 14: F() | |
| 15: F(1) | |
| // CHECK: 14: "" X "" | |
| // CHECK: 15: "" X "" | |
| #undef F | |
| #define SDEF(sname, ...) S sname __VA_OPT__(= { __VA_ARGS__ }) | |
| 16: SDEF(foo); // replaced by S foo; | |
| 17: SDEF(bar, 1, 2); // replaced by S bar = { 1, 2 }; | |
| // CHECK: 16: S foo ; | |
| // CHECK: 17: S bar = { 1, 2 }; | |
| #undef SDEF | |
| #define F(a,...) A() #__VA_OPT__(A3 __VA_ARGS__ a ## __VA_ARGS__ ## a ## C A3) A() | |
| 18: F() | |
| 19: F(,) | |
| 20: F(,A3) | |
| 21: F(A3, A(),A0) | |
| // CHECK: 18: B ( ) "" B ( ) | |
| // CHECK: 19: B ( ) "" B ( ) | |
| // CHECK: 20: B ( ) "A3 expandedA3 expandedA2 expandedA1 expandedA0 A3C A3" B ( ) | |
| // CHECK: 21: B ( ) "A3 B ( ),expandedA0 A3A(),A0A3C A3" B ( ) | |
| #undef F | |
| #define F(a,...) A() #__VA_OPT__(A3 __VA_ARGS__ a ## __VA_ARGS__ ## a ## C A3) a __VA_OPT__(A0 __VA_ARGS__ a ## __VA_ARGS__ ## a ## C A0) A() | |
| 22: F() | |
| 23: F(,) | |
| 24: F(,A0) | |
| 25: F(A0, A(),A0) | |
| // CHECK: 22: B ( ) "" B ( ) | |
| // CHECK: 23: B ( ) "" B ( ) | |
| // CHECK: 24: B ( ) "A3 expandedA0 A0C A3" expandedA0 expandedA0 A0C expandedA0 B ( ) | |
| // CHECK: 25: B ( ) "A3 B ( ),expandedA0 A0A(),A0A0C A3" expandedA0 expandedA0 C ( ),expandedA0 A0A(),A0A0C expandedA0 B ( ) | |
| #undef F | |
| #define F(a,...) __VA_OPT__(B a ## a) ## 1 | |
| #define G(a,...) __VA_OPT__(B a) ## 1 | |
| 26: F(,1) | |
| 26_1: G(,1) | |
| // CHECK: 26: B 1 | |
| // CHECK: 26_1: B 1 | |
| #undef F | |
| #undef G | |
| #define F(a,...) B ## __VA_OPT__(a 1) ## 1 | |
| #define G(a,...) B ## __VA_OPT__(a ## a 1) ## 1 | |
| 27: F(,1) | |
| 27_1: F(A0,1) | |
| 28: G(,1) | |
| // CHECK: 27: B 11 | |
| // CHECK: 27_1: BexpandedA0 11 | |
| // CHECK: 28: B 11 | |
| #undef F | |
| #undef G |