| // Test the GNU comma swallowing extension. | |
| // RUN: %clang_cc1 %s -E | FileCheck -strict-whitespace %s | |
| // CHECK: 1: foo{A, } | |
| #define X(Y) foo{A, Y} | |
| 1: X() | |
| // CHECK: 2: fo2{A,} | |
| #define X2(Y) fo2{A,##Y} | |
| 2: X2() | |
| // should eat the comma. | |
| // CHECK: 3: {foo} | |
| #define X3(b, ...) {b, ## __VA_ARGS__} | |
| 3: X3(foo) | |
| // PR3880 | |
| // CHECK: 4: AA BB | |
| #define X4(...) AA , ## __VA_ARGS__ BB | |
| 4: X4() | |
| // PR7943 | |
| // CHECK: 5: 1 | |
| #define X5(x,...) x##,##__VA_ARGS__ | |
| 5: X5(1) |