gnu/dist/gcc4/gcc/testsuite/gcc.dg/cpp/skipping.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do preprocess } */
   4
   5 /* Tests expansion of macros whilst skipping false conditionals.  */
   6
   7 /* Source: Neil Booth, 29 Oct 2000.  */
   8
   9 #define F()
  10 #define TRUE 1
  11
  12 #if 0
  13 F(                      /* No diagnostic: don't even try to expand it.  */
  14 #endif
  15
  16 #if 0
  17 #elif TRUE              /* Expand this, even though we were skipping.  */
  18 #else
  19 #error Macros not expanded in #elif
  20 #endif
  21
  22 /* Check we don't warn about bad identifiers when skipping.  */
  23 #if 0
  24 #define foo __VA_ARGS__ /* { dg-bogus "warned about identifier" } */
  25 #endif