Checking patch stdio-common/tst-sprintf-errno.c...
error: while searching for:

  errno = -1;
#ifdef __GNU__
  TEST_COMPARE (sprintf (buf, "%m"), 35);
  TEST_COMPARE_STRING (buf, "Error in unknown error system: FFFFFFFF");
#else
  TEST_COMPARE (sprintf (buf, "%m"), 16);

error: patch failed: stdio-common/tst-sprintf-errno.c:49
Applying patch stdio-common/tst-sprintf-errno.c with 1 reject...
Rejected hunk #1.