1// RUN: %clang_cc1 -E %s | grep '1: aaab 2' 2// RUN: %clang_cc1 -E %s | grep '2: 2 baaa' 3// RUN: %clang_cc1 -E %s | grep '3: 2 xx' 4 5#define a(n) aaa ## n 6#define b 2 71: a(b b) // aaab 2 2 gets expanded, not b. 8 9#undef a 10#undef b 11#define a(n) n ## aaa 12#define b 2 132: a(b b) // 2 baaa 2 gets expanded, not b. 14 15#define baaa xx 163: a(b b) // 2 xx 17 18