gcc/testsuite/gcc.dg/cpp/paste7.c

   1 /* { dg-do run } */
   2
   3 #define D_2 1, 2
   4 #define C_2(X, I0, I1) X##_a = I0, X##_b = I1
   5 #define B_2(X, I) C_2(X, I)
   6 #define A(N, X) B_##N (X, D_##N)
   7
   8 extern void abort(void);
   9 extern void exit(int);
  10
  11 int x_a, x_b;
  12
  13 int main(void)
  14 {
  15   A(2, x);
  16   if (x_a != 1 || x_b != 2)
  17     abort();
  18   exit(0);
  19 }