+
+ free (str1);
+ free (str2);
+ free (str3);
+ free (str4);
+ }
+
+ /* Test that perror uses the same message as strerror. */
+ {
+ int errs[] = { EACCES, 0, -3, };
+ int i;
+ for (i = 0; i < SIZEOF (errs); i++)
+ {
+ char buf[256];
+ char *err = strerror (errs[i]);
+
+ ASSERT (err);
+ ASSERT (strlen (err) < sizeof buf);
+ rewind (stderr);
+ ASSERT (ftruncate (fileno (stderr), 0) == 0);
+ errno = errs[i];
+ perror (NULL);
+ ASSERT (!ferror (stderr));
+ rewind (stderr);
+ ASSERT (fgets (buf, sizeof buf, stderr) == buf);
+ ASSERT (strstr (buf, err));
+ }