1  #include <errno.h>
       2  #include <limits.h>
       3  #include <stdio.h>
       4  #include <time.h>
       5  
       6  
       7  static int
       8  do_test (void)
       9  {
      10    int result = 0;
      11    time_t t = time (NULL);
      12    struct tm *tp = localtime (&t);
      13    tp->tm_year = 10000 - 1900;
      14    char buf[1000];
      15    errno = 0;
      16    buf[26] = '\xff';
      17    char *s = asctime_r (tp, buf);
      18    if (s != NULL || errno != EOVERFLOW)
      19      {
      20        puts ("asctime_r did not fail correctly");
      21        result = 1;
      22      }
      23    if (buf[26] != '\xff')
      24      {
      25        puts ("asctime_r overwrote 27th byte in buffer");
      26        result = 1;
      27      }
      28    return result;
      29  }
      30  
      31  #define TEST_FUNCTION do_test ()
      32  #include "../test-skeleton.c"