| // RUN: clang-cc -E %s | grep '1: aaab 2' | |
| // RUN: clang-cc -E %s | grep '2: 2 baaa' | |
| // RUN: clang-cc -E %s | grep '3: 2 xx' | |
| #define a(n) aaa ## n | |
| #define b 2 | |
| 1: a(b b) // aaab 2 2 gets expanded, not b. | |
| #undef a | |
| #undef b | |
| #define a(n) n ## aaa | |
| #define b 2 | |
| 2: a(b b) // 2 baaa 2 gets expanded, not b. | |
| #define baaa xx | |
| 3: a(b b) // 2 xx | |