| Shih-wei Liao | ea28516 | 2010-06-04 12:34:56 -0700 | [diff] [blame] | 1 | // RUN: %clang_cc1 %s -E | grep 'pre: 1 1 X' |
| 2 | // RUN: %clang_cc1 %s -E | grep 'nopre: 1A(X)' | ||||
| 3 | |||||
| 4 | /* Preexpansion of argument. */ | ||||
| 5 | #define A(X) 1 X | ||||
| 6 | pre: A(A(X)) | ||||
| 7 | |||||
| 8 | /* The ## operator disables preexpansion. */ | ||||
| 9 | #undef A | ||||
| 10 | #define A(X) 1 ## X | ||||
| 11 | nopre: A(A(X)) | ||||
| 12 | |||||