clang/test/Preprocessor/macro_fn_preexpand.c

   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