Function get_mtime

src/test.c:174–181

Return the modification time of FILENAME. If unsuccessful, return an invalid timestamp that is less than all valid timestamps. */

   If unsuccessful, return an invalid timestamp that is less
   than all valid timestamps.  */
static struct timespec
get_mtime (char const *filename)
{
  struct stat finfo;
  return (stat (filename, &finfo) < 0
          ? make_timespec (TYPE_MINIMUM (time_t), -1)
          : get_stat_mtime (&finfo));
}

/* Return the type of S, one of the test command's binary operators.
   If S is not a binary operator, return -1.  */