1 #define A(x) C(B, D
   2 #define D A(1))
   3 #define C(x,y) E(y)
   4 #define E(y) #y
   5 A(2))
   6 /*
   7  * check-name: Preprocessor #7
   8  * check-command: sparse -E $file
   9  *
  10  * check-output-start
  11 
  12 "\"D\""
  13  * check-output-end
  14  */