gcc/testsuite/gcc.dg/cpp/cmdlne-C.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do preprocess } */
   4 /* { dg-options -C } */
   5
   6 /* Test -C doesn't fail with #define.  #define is the tricky case,
   7    being the only directive that remembers its comments.
   8
   9    -C treats comments as tokens in their own right, so e.g. comment at
  10    the beginning of a directive turns it into a non-directive.  */
  11
  12 #define simple no comments
  13
  14 #define/**/obj_like/**/(some)/**/thing/**/
  15 #define fun_like(/**/x/**/,/**/y/**/)/**/
  16 /**/#define not_a_macro
  17
  18 #if !defined simple || !defined obj_like || !defined fun_like
  19 #error Missed some macros with -C
  20 #endif
  21
  22 #ifdef not_a_macro
  23 #error not_a_macro is!
  24 #endif
  25
  26 /* Check obj_like doesn't expect arguments, and fun_like does.  */
  27 obj_like
  28 fun_like (foo, bar)
  29
  30 /* Check OK to redefine fun_like without comments in the params.  */
  31 #define fun_like(x, y)/**/
  32
  33 /* Check comments in macros in directives are OK.  */
  34 #define ZERO 0 /* A trailing comment.  */
  35
  36 #if ZERO
  37 #endif