gcc/testsuite/gcc.dg/cpp/paste4.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.  */
   2 /* { dg-do compile } */
   3 /* { dg-options -save-temps } */
   4
   5 /* Since 1.0e and + form the pasted token, 1 is a separate token and
   6    so should be output with a preceding space.  The old preprocessor
   7    gets this wrong.  We use -save-temps to avoid direct use of the
   8    integrated preprocessor.  */
   9
  10 #define glue(x, y) x ## y
  11
  12 int main ()
  13 {
  14   double d = glue (1.0e, +1); /* { dg-error "exponent|(parse|syntax) error" } */
  15   return 0;
  16 }