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/* { dg-do run } */

/* Test for odd corner cases in stringizing/pasting.

   Taken more or less verbatim from C99 section 6.10.3.3.  */

#include <stdlib.h>

#include <string.h>

#define hash_hash # ## #

#define mkstr(a) # a

#define in_between(a) mkstr(a)

#define join(c, d) in_between(c hash_hash d)

const char p[] = join(x, y);

const char q[] = "x ## y";

int

main (void)

{

  if (strcmp (p, q))

    abort ();

  return 0;

}