gnu/dist/gcc4/gcc/testsuite/gcc.dg/cpp/avoidpaste1.c

   1 /* Copyright (C) 2001, 2003 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do preprocess } */
   4
   5 /* This tests that we avoid accidental pasting only before and after
   6    macros and arguments, and not when the tokens are already pasted
   7    in the souce file (e.g. "::" in a C source file).
   8
   9    Neil Booth, 28 Jan 2001.  */
  10
  11 #define f(x) x
  12 #define g
  13 #define tricky 1.0e ## -1
  14
  15 /* This should preprocess as
  16
  17 :: : : : : :^: 1.0e- 1
  18 : : : .. . 0 0 .
  19
  20 It relies on the fact that even when preprocessing C we bother to separate
  21 the colons of C++'s :: operator.  If we confine this behavior to C++
  22 in future, this test needs to change.  */
  23
  24 :: :g: :f(): :f(^): tricky
  25 :f(:): .. .__INCLUDE_LEVEL__ __INCLUDE_LEVEL__. /* Check builtins, too.  */
  26
  27 /* { dg-final { scan-file avoidpaste1.i ":: : : : : :\\^: 1.0e- 1" } }
  28    { dg-final { scan-file avoidpaste1.i ": : : \\\.\\\. \\\. 0 0 \\\." } } */