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/* Test some execution paths for error cases.

#cc: additional_flags=-Wl,--section-start=.startup=0x8000

   The linker option is for sake of newlib, where the default program

   layout starts at address 0.  We need to change the layout so

   there's no memory at 0, as all sim error checking is "lazy",

   depending on lack of memory mapping.  */

#include <stdio.h>

#include <stdlib.h>

#include <errno.h>

void err (const char *s)

{

  perror (s);

  abort ();

}

int main (int argc, char *argv[])

{

  /* Avoid getting files with random characters due to errors

     elsewhere.  */

  if (argc != 1

      || (argv[0][0] != '.' && argv[0][0] != '/' && argv[0][0] != 'r'))

    abort ();

  if (rename (argv[0], NULL) != -1

      || errno != EFAULT)

    err ("rename 1 ");

  errno = 0;

  if (rename (NULL, argv[0]) != -1

      || errno != EFAULT)

    err ("rename 2");

  printf ("pass\n");

  return 0;

}