gcc/testsuite/gcc.dg/cpp/vararg3.c

   1 /* Copyright (C) 2002 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do preprocess } */
   4 /* { dg-options "-std=c99" } */
   5
   6 /* Source: Neil Booth, 6 Aug 2002.
   7
   8    Tests that we DTRT with varargs commas for a single-parameter macro
   9    when in standards-conforming mode.  */
  10
  11 #define f(...) , ## __VA_ARGS__
  12
  13 /* The comma from f's expansion should be retained (standards
  14    conforming mode only).  Tests that it isn't in non-standards mode
  15    include macro8.c and vararg1.c.  */
  16 #if 2 f() 3               /* { dg-bogus "missing binary operator" } */
  17 #endif