debug: Autogenerate _FORTIFY_SOURCE tests

Rename debug/tst-chk1.c to debug/tst-fortify.c and add make hackery to
autogenerate tests with different macros enabled to build and run the
same test with different configurations as well as different
fortification levels.

The change also ends up expanding the -lfs tests to include
_FORTIFY_SOURCE=3.

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 0 insertions, 1726 deletions

diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
deleted file mode 100644
index 9288610fe6..0000000000
--- a/debug/tst-chk1.c
+++ /dev/null
@@ -1,1726 +0,0 @@
-/* Copyright (C) 2004-2022 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-/* This file tests gets.  Force it to be declared.  */
-#include <features.h>
-#undef __GLIBC_USE_DEPRECATED_GETS
-#define __GLIBC_USE_DEPRECATED_GETS 1
-
-#include <assert.h>
-#include <fcntl.h>
-#include <locale.h>
-#include <obstack.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <wchar.h>
-#include <sys/poll.h>
-#include <sys/select.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-
-#define obstack_chunk_alloc malloc
-#define obstack_chunk_free free
-
-char *temp_filename;
-static void do_prepare (void);
-static int do_test (void);
-#define PREPARE(argc, argv) do_prepare ()
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"
-
-static void
-do_prepare (void)
-{
-  int temp_fd = create_temp_file ("tst-chk1.", &temp_filename);
-  if (temp_fd == -1)
-    {
-      printf ("cannot create temporary file: %m\n");
-      exit (1);
-    }
-
-  const char *strs = "abcdefgh\nABCDEFGHI\nabcdefghij\nABCDEFGHIJ";
-  if ((size_t) write (temp_fd, strs, strlen (strs)) != strlen (strs))
-    {
-      puts ("could not write test strings into file");
-      unlink (temp_filename);
-      exit (1);
-    }
-}
-
-volatile int chk_fail_ok;
-volatile int ret;
-jmp_buf chk_fail_buf;
-
-static void
-handler (int sig)
-{
-  if (chk_fail_ok)
-    {
-      chk_fail_ok = 0;
-      longjmp (chk_fail_buf, 1);
-    }
-  else
-    _exit (127);
-}
-
-#if __USE_FORTIFY_LEVEL == 3
-volatile size_t buf_size = 10;
-#else
-char buf[10];
-wchar_t wbuf[10];
-#define buf_size sizeof (buf)
-#endif
-
-volatile size_t l0;
-volatile char *p;
-volatile wchar_t *wp;
-const char *str1 = "JIHGFEDCBA";
-const char *str2 = "F";
-const char *str3 = "%s%n%s%n";
-const char *str4 = "Hello, ";
-const char *str5 = "World!\n";
-const wchar_t *wstr1 = L"JIHGFEDCBA";
-const wchar_t *wstr2 = L"F";
-const wchar_t *wstr3 = L"%s%n%s%n";
-const wchar_t *wstr4 = L"Hello, ";
-const wchar_t *wstr5 = L"World!\n";
-char buf2[10] = "%s";
-int num1 = 67;
-int num2 = 987654;
-
-#define FAIL() \
-  do { printf ("Failure on line %d\n", __LINE__); ret = 1; } while (0)
-#define CHK_FAIL_START \
-  chk_fail_ok = 1;				\
-  if (! setjmp (chk_fail_buf))			\
-    {
-#define CHK_FAIL_END \
-      chk_fail_ok = 0;				\
-      FAIL ();					\
-    }
-#if __USE_FORTIFY_LEVEL >= 2 && (!defined __cplusplus || defined __va_arg_pack)
-# define CHK_FAIL2_START CHK_FAIL_START
-# define CHK_FAIL2_END CHK_FAIL_END
-#else
-# define CHK_FAIL2_START
-# define CHK_FAIL2_END
-#endif
-
-static int
-do_test (void)
-{
-#if __USE_FORTIFY_LEVEL == 3
-  char *buf = (char *) malloc (buf_size);
-  wchar_t *wbuf = (wchar_t *) malloc (buf_size * sizeof (wchar_t));
-#endif
-  set_fortify_handler (handler);
-
-  struct A { char buf1[9]; char buf2[1]; } a;
-  struct wA { wchar_t buf1[9]; wchar_t buf2[1]; } wa;
-
-  printf ("Test checking routines at fortify level %d\n",
-#ifdef __USE_FORTIFY_LEVEL
-	  (int) __USE_FORTIFY_LEVEL
-#else
-	  0
-#endif
-	  );
-
-#if defined __USE_FORTIFY_LEVEL && !defined __fortify_function
-  printf ("Test skipped");
-  if (l0 == 0)
-    return 0;
-#endif
-
-  /* These ops can be done without runtime checking of object size.  */
-  memcpy (buf, "abcdefghij", 10);
-  memmove (buf + 1, buf, 9);
-  if (memcmp (buf, "aabcdefghi", 10))
-    FAIL ();
-
-  memcpy (buf, "abcdefghij", 10);
-  bcopy (buf, buf + 1, 9);
-  if (memcmp (buf, "aabcdefghi", 10))
-    FAIL ();
-
-  if (mempcpy (buf + 5, "abcde", 5) != buf + 10
-      || memcmp (buf, "aabcdabcde", 10))
-    FAIL ();
-
-  memset (buf + 8, 'j', 2);
-  if (memcmp (buf, "aabcdabcjj", 10))
-    FAIL ();
-
-  bzero (buf + 8, 2);
-  if (memcmp (buf, "aabcdabc\0\0", 10))
-    FAIL ();
-
-  explicit_bzero (buf + 6, 4);
-  if (memcmp (buf, "aabcda\0\0\0\0", 10))
-    FAIL ();
-
-  strcpy (buf + 4, "EDCBA");
-  if (memcmp (buf, "aabcEDCBA", 10))
-    FAIL ();
-
-  if (stpcpy (buf + 8, "F") != buf + 9 || memcmp (buf, "aabcEDCBF", 10))
-    FAIL ();
-
-  strncpy (buf + 6, "X", 4);
-  if (memcmp (buf, "aabcEDX\0\0", 10))
-    FAIL ();
-
-  if (sprintf (buf + 7, "%s", "67") != 2 || memcmp (buf, "aabcEDX67", 10))
-    FAIL ();
-
-  if (snprintf (buf + 7, 3, "%s", "987654") != 6
-      || memcmp (buf, "aabcEDX98", 10))
-    FAIL ();
-
-  /* These ops need runtime checking, but shouldn't __chk_fail.  */
-  memcpy (buf, "abcdefghij", l0 + 10);
-  memmove (buf + 1, buf, l0 + 9);
-  if (memcmp (buf, "aabcdefghi", 10))
-    FAIL ();
-
-  memcpy (buf, "abcdefghij", l0 + 10);
-  bcopy (buf, buf + 1, l0 + 9);
-  if (memcmp (buf, "aabcdefghi", 10))
-    FAIL ();
-
-  if (mempcpy (buf + 5, "abcde", l0 + 5) != buf + 10
-      || memcmp (buf, "aabcdabcde", 10))
-    FAIL ();
-
-  memset (buf + 8, 'j', l0 + 2);
-  if (memcmp (buf, "aabcdabcjj", 10))
-    FAIL ();
-
-  bzero (buf + 8, l0 + 2);
-  if (memcmp (buf, "aabcdabc\0\0", 10))
-    FAIL ();
-
-  explicit_bzero (buf + 6, l0 + 4);
-  if (memcmp (buf, "aabcda\0\0\0\0", 10))
-    FAIL ();
-
-  strcpy (buf + 4, str1 + 5);
-  if (memcmp (buf, "aabcEDCBA", 10))
-    FAIL ();
-
-  if (stpcpy (buf + 8, str2) != buf + 9 || memcmp (buf, "aabcEDCBF", 10))
-    FAIL ();
-
-  strncpy (buf + 6, "X", l0 + 4);
-  if (memcmp (buf, "aabcEDX\0\0", 10))
-    FAIL ();
-
-  if (stpncpy (buf + 5, "cd", l0 + 5) != buf + 7
-      || memcmp (buf, "aabcEcd\0\0", 10))
-    FAIL ();
-
-  if (sprintf (buf + 7, "%d", num1) != 2 || memcmp (buf, "aabcEcd67", 10))
-    FAIL ();
-
-  if (snprintf (buf + 7, 3, "%d", num2) != 6 || memcmp (buf, "aabcEcd98", 10))
-    FAIL ();
-
-  buf[l0 + 8] = '\0';
-  strcat (buf, "A");
-  if (memcmp (buf, "aabcEcd9A", 10))
-    FAIL ();
-
-  buf[l0 + 7] = '\0';
-  strncat (buf, "ZYXWV", l0 + 2);
-  if (memcmp (buf, "aabcEcdZY", 10))
-    FAIL ();
-
-  /* The following tests are supposed to succeed at all fortify
-     levels, even though they overflow a.buf1 into a.buf2.  */
-  memcpy (a.buf1, "abcdefghij", l0 + 10);
-  memmove (a.buf1 + 1, a.buf1, l0 + 9);
-  if (memcmp (a.buf1, "aabcdefghi", 10))
-    FAIL ();
-
-  memcpy (a.buf1, "abcdefghij", l0 + 10);
-  bcopy (a.buf1, a.buf1 + 1, l0 + 9);
-  if (memcmp (a.buf1, "aabcdefghi", 10))
-    FAIL ();
-
-  if (mempcpy (a.buf1 + 5, "abcde", l0 + 5) != a.buf1 + 10
-      || memcmp (a.buf1, "aabcdabcde", 10))
-    FAIL ();
-
-  memset (a.buf1 + 8, 'j', l0 + 2);
-  if (memcmp (a.buf1, "aabcdabcjj", 10))
-    FAIL ();
-
-  bzero (a.buf1 + 8, l0 + 2);
-  if (memcmp (a.buf1, "aabcdabc\0\0", 10))
-    FAIL ();
-
-  explicit_bzero (a.buf1 + 6, l0 + 4);
-  if (memcmp (a.buf1, "aabcda\0\0\0\0", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL < 2
-  /* The following tests are supposed to crash with -D_FORTIFY_SOURCE=2
-     and sufficient GCC support, as the string operations overflow
-     from a.buf1 into a.buf2.  */
-  strcpy (a.buf1 + 4, str1 + 5);
-  if (memcmp (a.buf1, "aabcEDCBA", 10))
-    FAIL ();
-
-  if (stpcpy (a.buf1 + 8, str2) != a.buf1 + 9
-      || memcmp (a.buf1, "aabcEDCBF", 10))
-    FAIL ();
-
-  strncpy (a.buf1 + 6, "X", l0 + 4);
-  if (memcmp (a.buf1, "aabcEDX\0\0", 10))
-    FAIL ();
-
-  if (sprintf (a.buf1 + 7, "%d", num1) != 2
-      || memcmp (a.buf1, "aabcEDX67", 10))
-    FAIL ();
-
-  if (snprintf (a.buf1 + 7, 3, "%d", num2) != 6
-      || memcmp (a.buf1, "aabcEDX98", 10))
-    FAIL ();
-
-  a.buf1[l0 + 8] = '\0';
-  strcat (a.buf1, "A");
-  if (memcmp (a.buf1, "aabcEDX9A", 10))
-    FAIL ();
-
-  a.buf1[l0 + 7] = '\0';
-  strncat (a.buf1, "ZYXWV", l0 + 2);
-  if (memcmp (a.buf1, "aabcEDXZY", 10))
-    FAIL ();
-
-#endif
-
-#if __USE_FORTIFY_LEVEL >= 1
-  /* Now check if all buffer overflows are caught at runtime.
-     N.B. All tests involving a length parameter need to be done
-     twice: once with the length a compile-time constant, once without.  */
-
-  CHK_FAIL_START
-  memcpy (buf + 1, "abcdefghij", 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memcpy (buf + 1, "abcdefghij", l0 + 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memmove (buf + 2, buf + 1, 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memmove (buf + 2, buf + 1, l0 + 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bcopy (buf + 1, buf + 2, 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bcopy (buf + 1, buf + 2, l0 + 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  p = (char *) mempcpy (buf + 6, "abcde", 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  p = (char *) mempcpy (buf + 6, "abcde", l0 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memset (buf + 9, 'j', 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memset (buf + 9, 'j', l0 + 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bzero (buf + 9, 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bzero (buf + 9, l0 + 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  explicit_bzero (buf + 9, 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  explicit_bzero (buf + 9, l0 + 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  strcpy (buf + 5, str1 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  p = stpcpy (buf + 9, str2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  strncpy (buf + 7, "X", 4);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  strncpy (buf + 7, "X", l0 + 4);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  stpncpy (buf + 6, "cd", 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  stpncpy (buf + 6, "cd", l0 + 5);
-  CHK_FAIL_END
-
-# if !defined __cplusplus || defined __va_arg_pack
-  CHK_FAIL_START
-  sprintf (buf + 8, "%d", num1);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  snprintf (buf + 8, 3, "%d", num2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  snprintf (buf + 8, l0 + 3, "%d", num2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  swprintf (wbuf + 8, 3, L"%d", num1);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  swprintf (wbuf + 8, l0 + 3, L"%d", num1);
-  CHK_FAIL_END
-# endif
-
-  memcpy (buf, str1 + 2, 9);
-  CHK_FAIL_START
-  strcat (buf, "AB");
-  CHK_FAIL_END
-
-  memcpy (buf, str1 + 3, 8);
-  CHK_FAIL_START
-  strncat (buf, "ZYXWV", 3);
-  CHK_FAIL_END
-
-  memcpy (buf, str1 + 3, 8);
-  CHK_FAIL_START
-  strncat (buf, "ZYXWV", l0 + 3);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memcpy (a.buf1 + 1, "abcdefghij", 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memcpy (a.buf1 + 1, "abcdefghij", l0 + 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memmove (a.buf1 + 2, a.buf1 + 1, 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memmove (a.buf1 + 2, a.buf1 + 1, l0 + 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bcopy (a.buf1 + 1, a.buf1 + 2, 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bcopy (a.buf1 + 1, a.buf1 + 2, l0 + 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  p = (char *) mempcpy (a.buf1 + 6, "abcde", 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  p = (char *) mempcpy (a.buf1 + 6, "abcde", l0 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memset (a.buf1 + 9, 'j', 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  memset (a.buf1 + 9, 'j', l0 + 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bzero (a.buf1 + 9, 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  bzero (a.buf1 + 9, l0 + 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  explicit_bzero (a.buf1 + 9, 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  explicit_bzero (a.buf1 + 9, l0 + 2);
-  CHK_FAIL_END
-
-# if __USE_FORTIFY_LEVEL >= 2
-#  define O 0
-# else
-#  define O 1
-# endif
-
-  CHK_FAIL_START
-  strcpy (a.buf1 + (O + 4), str1 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  p = stpcpy (a.buf1 + (O + 8), str2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  strncpy (a.buf1 + (O + 6), "X", 4);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  strncpy (a.buf1 + (O + 6), "X", l0 + 4);
-  CHK_FAIL_END
-
-# if !defined __cplusplus || defined __va_arg_pack
-  CHK_FAIL_START
-  sprintf (a.buf1 + (O + 7), "%d", num1);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  snprintf (a.buf1 + (O + 7), 3, "%d", num2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  snprintf (a.buf1 + (O + 7), l0 + 3, "%d", num2);
-  CHK_FAIL_END
-# endif
-
-  memcpy (a.buf1, str1 + (3 - O), 8 + O);
-  CHK_FAIL_START
-  strcat (a.buf1, "AB");
-  CHK_FAIL_END
-
-  memcpy (a.buf1, str1 + (4 - O), 7 + O);
-  CHK_FAIL_START
-  strncat (a.buf1, "ZYXWV", l0 + 3);
-  CHK_FAIL_END
-#endif
-
-
-  /* These ops can be done without runtime checking of object size.  */
-  wmemcpy (wbuf, L"abcdefghij", 10);
-  wmemmove (wbuf + 1, wbuf, 9);
-  if (wmemcmp (wbuf, L"aabcdefghi", 10))
-    FAIL ();
-
-  if (wmempcpy (wbuf + 5, L"abcde", 5) != wbuf + 10
-      || wmemcmp (wbuf, L"aabcdabcde", 10))
-    FAIL ();
-
-  wmemset (wbuf + 8, L'j', 2);
-  if (wmemcmp (wbuf, L"aabcdabcjj", 10))
-    FAIL ();
-
-  wcscpy (wbuf + 4, L"EDCBA");
-  if (wmemcmp (wbuf, L"aabcEDCBA", 10))
-    FAIL ();
-
-  if (wcpcpy (wbuf + 8, L"F") != wbuf + 9 || wmemcmp (wbuf, L"aabcEDCBF", 10))
-    FAIL ();
-
-  wcsncpy (wbuf + 6, L"X", 4);
-  if (wmemcmp (wbuf, L"aabcEDX\0\0", 10))
-    FAIL ();
-
-  if (swprintf (wbuf + 7, 3, L"%ls", L"987654") >= 0
-      || wmemcmp (wbuf, L"aabcEDX98", 10))
-    FAIL ();
-
-  if (swprintf (wbuf + 7, 3, L"64") != 2
-      || wmemcmp (wbuf, L"aabcEDX64", 10))
-    FAIL ();
-
-  /* These ops need runtime checking, but shouldn't __chk_fail.  */
-  wmemcpy (wbuf, L"abcdefghij", l0 + 10);
-  wmemmove (wbuf + 1, wbuf, l0 + 9);
-  if (wmemcmp (wbuf, L"aabcdefghi", 10))
-    FAIL ();
-
-  if (wmempcpy (wbuf + 5, L"abcde", l0 + 5) != wbuf + 10
-      || wmemcmp (wbuf, L"aabcdabcde", 10))
-    FAIL ();
-
-  wmemset (wbuf + 8, L'j', l0 + 2);
-  if (wmemcmp (wbuf, L"aabcdabcjj", 10))
-    FAIL ();
-
-  wcscpy (wbuf + 4, wstr1 + 5);
-  if (wmemcmp (wbuf, L"aabcEDCBA", 10))
-    FAIL ();
-
-  if (wcpcpy (wbuf + 8, wstr2) != wbuf + 9 || wmemcmp (wbuf, L"aabcEDCBF", 10))
-    FAIL ();
-
-  wcsncpy (wbuf + 6, L"X", l0 + 4);
-  if (wmemcmp (wbuf, L"aabcEDX\0\0", 10))
-    FAIL ();
-
-  if (wcpncpy (wbuf + 5, L"cd", l0 + 5) != wbuf + 7
-      || wmemcmp (wbuf, L"aabcEcd\0\0", 10))
-    FAIL ();
-
-  if (swprintf (wbuf + 7, 3, L"%d", num2) >= 0
-      || wmemcmp (wbuf, L"aabcEcd98", 10))
-    FAIL ();
-
-  wbuf[l0 + 8] = L'\0';
-  wcscat (wbuf, L"A");
-  if (wmemcmp (wbuf, L"aabcEcd9A", 10))
-    FAIL ();
-
-  wbuf[l0 + 7] = L'\0';
-  wcsncat (wbuf, L"ZYXWV", l0 + 2);
-  if (wmemcmp (wbuf, L"aabcEcdZY", 10))
-    FAIL ();
-
-  wmemcpy (wa.buf1, L"abcdefghij", l0 + 10);
-  wmemmove (wa.buf1 + 1, wa.buf1, l0 + 9);
-  if (wmemcmp (wa.buf1, L"aabcdefghi", 10))
-    FAIL ();
-
-  if (wmempcpy (wa.buf1 + 5, L"abcde", l0 + 5) != wa.buf1 + 10
-      || wmemcmp (wa.buf1, L"aabcdabcde", 10))
-    FAIL ();
-
-  wmemset (wa.buf1 + 8, L'j', l0 + 2);
-  if (wmemcmp (wa.buf1, L"aabcdabcjj", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL < 2
-  /* The following tests are supposed to crash with -D_FORTIFY_SOURCE=2
-     and sufficient GCC support, as the string operations overflow
-     from a.buf1 into a.buf2.  */
-  wcscpy (wa.buf1 + 4, wstr1 + 5);
-  if (wmemcmp (wa.buf1, L"aabcEDCBA", 10))
-    FAIL ();
-
-  if (wcpcpy (wa.buf1 + 8, wstr2) != wa.buf1 + 9
-      || wmemcmp (wa.buf1, L"aabcEDCBF", 10))
-    FAIL ();
-
-  wcsncpy (wa.buf1 + 6, L"X", l0 + 4);
-  if (wmemcmp (wa.buf1, L"aabcEDX\0\0", 10))
-    FAIL ();
-
-  if (swprintf (wa.buf1 + 7, 3, L"%d", num2) >= 0
-      || wmemcmp (wa.buf1, L"aabcEDX98", 10))
-    FAIL ();
-
-  wa.buf1[l0 + 8] = L'\0';
-  wcscat (wa.buf1, L"A");
-  if (wmemcmp (wa.buf1, L"aabcEDX9A", 10))
-    FAIL ();
-
-  wa.buf1[l0 + 7] = L'\0';
-  wcsncat (wa.buf1, L"ZYXWV", l0 + 2);
-  if (wmemcmp (wa.buf1, L"aabcEDXZY", 10))
-    FAIL ();
-
-#endif
-
-#if __USE_FORTIFY_LEVEL >= 1
-  /* Now check if all buffer overflows are caught at runtime.
-     N.B. All tests involving a length parameter need to be done
-     twice: once with the length a compile-time constant, once without.  */
-
-  CHK_FAIL_START
-  wmemcpy (wbuf + 1, L"abcdefghij", 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemcpy (wbuf + 1, L"abcdefghij", l0 + 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemcpy (wbuf + 9, L"abcdefghij", 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemcpy (wbuf + 9, L"abcdefghij", l0 + 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemmove (wbuf + 2, wbuf + 1, 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemmove (wbuf + 2, wbuf + 1, l0 + 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wp = wmempcpy (wbuf + 6, L"abcde", 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wp = wmempcpy (wbuf + 6, L"abcde", l0 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemset (wbuf + 9, L'j', 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemset (wbuf + 9, L'j', l0 + 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcscpy (wbuf + 5, wstr1 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wp = wcpcpy (wbuf + 9, wstr2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcsncpy (wbuf + 7, L"X", 4);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcsncpy (wbuf + 7, L"X", l0 + 4);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcsncpy (wbuf + 9, L"XABCDEFGH", 8);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcpncpy (wbuf + 9, L"XABCDEFGH", 8);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcpncpy (wbuf + 6, L"cd", 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcpncpy (wbuf + 6, L"cd", l0 + 5);
-  CHK_FAIL_END
-
-  wmemcpy (wbuf, wstr1 + 2, 9);
-  CHK_FAIL_START
-  wcscat (wbuf, L"AB");
-  CHK_FAIL_END
-
-  wmemcpy (wbuf, wstr1 + 3, 8);
-  CHK_FAIL_START
-  wcsncat (wbuf, L"ZYXWV", l0 + 3);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemcpy (wa.buf1 + 1, L"abcdefghij", 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemcpy (wa.buf1 + 1, L"abcdefghij", l0 + 10);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemmove (wa.buf1 + 2, wa.buf1 + 1, 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemmove (wa.buf1 + 2, wa.buf1 + 1, l0 + 9);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wp = wmempcpy (wa.buf1 + 6, L"abcde", 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wp = wmempcpy (wa.buf1 + 6, L"abcde", l0 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemset (wa.buf1 + 9, L'j', 2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wmemset (wa.buf1 + 9, L'j', l0 + 2);
-  CHK_FAIL_END
-
-#if __USE_FORTIFY_LEVEL >= 2
-# define O 0
-#else
-# define O 1
-#endif
-
-  CHK_FAIL_START
-  wcscpy (wa.buf1 + (O + 4), wstr1 + 5);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wp = wcpcpy (wa.buf1 + (O + 8), wstr2);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcsncpy (wa.buf1 + (O + 6), L"X", 4);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  wcsncpy (wa.buf1 + (O + 6), L"X", l0 + 4);
-  CHK_FAIL_END
-
-  wmemcpy (wa.buf1, wstr1 + (3 - O), 8 + O);
-  CHK_FAIL_START
-  wcscat (wa.buf1, L"AB");
-  CHK_FAIL_END
-
-  wmemcpy (wa.buf1, wstr1 + (4 - O), 7 + O);
-  CHK_FAIL_START
-  wcsncat (wa.buf1, L"ZYXWV", l0 + 3);
-  CHK_FAIL_END
-#endif
-
-
-  /* Now checks for %n protection.  */
-
-  /* Constant literals passed directly are always ok
-     (even with warnings about possible bugs from GCC).  */
-  int n1, n2;
-  if (sprintf (buf, "%s%n%s%n", str2, &n1, str2, &n2) != 2
-      || n1 != 1 || n2 != 2)
-    FAIL ();
-
-  /* In this case the format string is not known at compile time,
-     but resides in read-only memory, so is ok.  */
-  if (snprintf (buf, 4, str3, str2, &n1, str2, &n2) != 2
-      || n1 != 1 || n2 != 2)
-    FAIL ();
-
-  strcpy (buf2 + 2, "%n%s%n");
-  /* When the format string is writable and contains %n,
-     with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
-  CHK_FAIL2_START
-  if (sprintf (buf, buf2, str2, &n1, str2, &n1) != 2)
-    FAIL ();
-  CHK_FAIL2_END
-
-  CHK_FAIL2_START
-  if (snprintf (buf, 3, buf2, str2, &n1, str2, &n1) != 2)
-    FAIL ();
-  CHK_FAIL2_END
-
-  /* But if there is no %n, even writable format string
-     should work.  */
-  buf2[6] = '\0';
-  if (sprintf (buf, buf2 + 4, str2) != 1)
-    FAIL ();
-
-  /* Constant literals passed directly are always ok
-     (even with warnings about possible bugs from GCC).  */
-  if (printf ("%s%n%s%n", str4, &n1, str5, &n2) != 14
-      || n1 != 7 || n2 != 14)
-    FAIL ();
-
-  /* In this case the format string is not known at compile time,
-     but resides in read-only memory, so is ok.  */
-  if (printf (str3, str4, &n1, str5, &n2) != 14
-      || n1 != 7 || n2 != 14)
-    FAIL ();
-
-  strcpy (buf2 + 2, "%n%s%n");
-  /* When the format string is writable and contains %n,
-     with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
-  CHK_FAIL2_START
-  if (printf (buf2, str4, &n1, str5, &n1) != 14)
-    FAIL ();
-  CHK_FAIL2_END
-
-  /* But if there is no %n, even writable format string
-     should work.  */
-  buf2[6] = '\0';
-  if (printf (buf2 + 4, str5) != 7)
-    FAIL ();
-
-  FILE *fp = stdout;
-
-  /* Constant literals passed directly are always ok
-     (even with warnings about possible bugs from GCC).  */
-  if (fprintf (fp, "%s%n%s%n", str4, &n1, str5, &n2) != 14
-      || n1 != 7 || n2 != 14)
-    FAIL ();
-
-  /* In this case the format string is not known at compile time,
-     but resides in read-only memory, so is ok.  */
-  if (fprintf (fp, str3, str4, &n1, str5, &n2) != 14
-      || n1 != 7 || n2 != 14)
-    FAIL ();
-
-  strcpy (buf2 + 2, "%n%s%n");
-  /* When the format string is writable and contains %n,
-     with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
-  CHK_FAIL2_START
-  if (fprintf (fp, buf2, str4, &n1, str5, &n1) != 14)
-    FAIL ();
-  CHK_FAIL2_END
-
-  /* But if there is no %n, even writable format string
-     should work.  */
-  buf2[6] = '\0';
-  if (fprintf (fp, buf2 + 4, str5) != 7)
-    FAIL ();
-
-  char *my_ptr = NULL;
-  strcpy (buf2 + 2, "%n%s%n");
-  /* When the format string is writable and contains %n,
-     with -D_FORTIFY_SOURCE=2 it causes __chk_fail.  */
-  CHK_FAIL2_START
-  if (asprintf (&my_ptr, buf2, str4, &n1, str5, &n1) != 14)
-    FAIL ();
-  else
-    free (my_ptr);
-  CHK_FAIL2_END
-
-  struct obstack obs;
-  obstack_init (&obs);
-  CHK_FAIL2_START
-  if (obstack_printf (&obs, buf2, str4, &n1, str5, &n1) != 14)
-    FAIL ();
-  CHK_FAIL2_END
-  obstack_free (&obs, NULL);
-
-  my_ptr = NULL;
-  if (asprintf (&my_ptr, "%s%n%s%n", str4, &n1, str5, &n1) != 14)
-    FAIL ();
-  else
-    free (my_ptr);
-
-  obstack_init (&obs);
-  if (obstack_printf (&obs, "%s%n%s%n", str4, &n1, str5, &n1) != 14)
-    FAIL ();
-  obstack_free (&obs, NULL);
-
-  if (freopen (temp_filename, "r", stdin) == NULL)
-    {
-      puts ("could not open temporary file");
-      exit (1);
-    }
-
-  if (gets (buf) != buf || memcmp (buf, "abcdefgh", 9))
-    FAIL ();
-  if (gets (buf) != buf || memcmp (buf, "ABCDEFGHI", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (gets (buf) != buf)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  rewind (stdin);
-
-  if (fgets (buf, buf_size, stdin) != buf
-      || memcmp (buf, "abcdefgh\n", 10))
-    FAIL ();
-  if (fgets (buf, buf_size, stdin) != buf || memcmp (buf, "ABCDEFGHI", 10))
-    FAIL ();
-
-  rewind (stdin);
-
-  if (fgets (buf, l0 + buf_size, stdin) != buf
-      || memcmp (buf, "abcdefgh\n", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (fgets (buf, buf_size + 1, stdin) != buf)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (fgets (buf, l0 + buf_size + 1, stdin) != buf)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  rewind (stdin);
-
-  if (fgets_unlocked (buf, buf_size, stdin) != buf
-      || memcmp (buf, "abcdefgh\n", 10))
-    FAIL ();
-  if (fgets_unlocked (buf, buf_size, stdin) != buf
-      || memcmp (buf, "ABCDEFGHI", 10))
-    FAIL ();
-
-  rewind (stdin);
-
-  if (fgets_unlocked (buf, l0 + buf_size, stdin) != buf
-      || memcmp (buf, "abcdefgh\n", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (fgets_unlocked (buf, buf_size + 1, stdin) != buf)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (fgets_unlocked (buf, l0 + buf_size + 1, stdin) != buf)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  rewind (stdin);
-
-  if (fread (buf, 1, buf_size, stdin) != buf_size
-      || memcmp (buf, "abcdefgh\nA", 10))
-    FAIL ();
-  if (fread (buf, buf_size, 1, stdin) != 1
-      || memcmp (buf, "BCDEFGHI\na", 10))
-    FAIL ();
-
-  rewind (stdin);
-
-  if (fread (buf, l0 + 1, buf_size, stdin) != buf_size
-      || memcmp (buf, "abcdefgh\nA", 10))
-    FAIL ();
-  if (fread (buf, buf_size, l0 + 1, stdin) != 1
-      || memcmp (buf, "BCDEFGHI\na", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (fread (buf, 1, buf_size + 1, stdin) != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (fread (buf, buf_size + 1, l0 + 1, stdin) != 1)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  rewind (stdin);
-
-  if (fread_unlocked (buf, 1, buf_size, stdin) != buf_size
-      || memcmp (buf, "abcdefgh\nA", 10))
-    FAIL ();
-  if (fread_unlocked (buf, buf_size, 1, stdin) != 1
-      || memcmp (buf, "BCDEFGHI\na", 10))
-    FAIL ();
-
-  rewind (stdin);
-
-  if (fread_unlocked (buf, 1, 4, stdin) != 4
-      || memcmp (buf, "abcdFGHI\na", 10))
-    FAIL ();
-  if (fread_unlocked (buf, 4, 1, stdin) != 1
-      || memcmp (buf, "efghFGHI\na", 10))
-    FAIL ();
-
-  rewind (stdin);
-
-  if (fread_unlocked (buf, l0 + 1, buf_size, stdin) != buf_size
-      || memcmp (buf, "abcdefgh\nA", 10))
-    FAIL ();
-  if (fread_unlocked (buf, buf_size, l0 + 1, stdin) != 1
-      || memcmp (buf, "BCDEFGHI\na", 10))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (fread_unlocked (buf, 1, buf_size + 1, stdin) != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (fread_unlocked (buf, buf_size + 1, l0 + 1, stdin) != 1)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  lseek (fileno (stdin), 0, SEEK_SET);
-
-  if (read (fileno (stdin), buf, buf_size - 1) != buf_size - 1
-      || memcmp (buf, "abcdefgh\n", 9))
-    FAIL ();
-  if (read (fileno (stdin), buf, buf_size - 1) != buf_size - 1
-      || memcmp (buf, "ABCDEFGHI", 9))
-    FAIL ();
-
-  lseek (fileno (stdin), 0, SEEK_SET);
-
-  if (read (fileno (stdin), buf, l0 + buf_size - 1) != buf_size - 1
-      || memcmp (buf, "abcdefgh\n", 9))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (read (fileno (stdin), buf, buf_size + 1) != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (read (fileno (stdin), buf, l0 + buf_size + 1) != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  if (pread (fileno (stdin), buf, buf_size - 1, buf_size - 2)
-      != buf_size - 1
-      || memcmp (buf, "\nABCDEFGH", 9))
-    FAIL ();
-  if (pread (fileno (stdin), buf, buf_size - 1, 0) != buf_size - 1
-      || memcmp (buf, "abcdefgh\n", 9))
-    FAIL ();
-  if (pread (fileno (stdin), buf, l0 + buf_size - 1, buf_size - 3)
-      != buf_size - 1
-      || memcmp (buf, "h\nABCDEFG", 9))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (pread (fileno (stdin), buf, buf_size + 1, 2 * buf_size)
-      != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (pread (fileno (stdin), buf, l0 + buf_size + 1, 2 * buf_size)
-      != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  if (pread64 (fileno (stdin), buf, buf_size - 1, buf_size - 2)
-      != buf_size - 1
-      || memcmp (buf, "\nABCDEFGH", 9))
-    FAIL ();
-  if (pread64 (fileno (stdin), buf, buf_size - 1, 0) != buf_size - 1
-      || memcmp (buf, "abcdefgh\n", 9))
-    FAIL ();
-  if (pread64 (fileno (stdin), buf, l0 + buf_size - 1, buf_size - 3)
-      != buf_size - 1
-      || memcmp (buf, "h\nABCDEFG", 9))
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (pread64 (fileno (stdin), buf, buf_size + 1, 2 * buf_size)
-      != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (pread64 (fileno (stdin), buf, l0 + buf_size + 1, 2 * buf_size)
-      != buf_size + 1)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  if (freopen (temp_filename, "r", stdin) == NULL)
-    {
-      puts ("could not open temporary file");
-      exit (1);
-    }
-
-  if (fseek (stdin, 9 + 10 + 11, SEEK_SET))
-    {
-      puts ("could not seek in test file");
-      exit (1);
-    }
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (gets (buf) != buf)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  /* Check whether missing N$ formats are detected.  */
-  CHK_FAIL2_START
-  printf ("%3$d\n", 1, 2, 3, 4);
-  CHK_FAIL2_END
-
-  CHK_FAIL2_START
-  fprintf (stdout, "%3$d\n", 1, 2, 3, 4);
-  CHK_FAIL2_END
-
-  CHK_FAIL2_START
-  sprintf (buf, "%3$d\n", 1, 2, 3, 4);
-  CHK_FAIL2_END
-
-  CHK_FAIL2_START
-  snprintf (buf, buf_size, "%3$d\n", 1, 2, 3, 4);
-  CHK_FAIL2_END
-
-  int sp[2];
-  if (socketpair (PF_UNIX, SOCK_STREAM, 0, sp))
-    FAIL ();
-  else
-    {
-      const char *sendstr = "abcdefgh\nABCDEFGH\n0123456789\n";
-      if ((size_t) send (sp[0], sendstr, strlen (sendstr), 0)
-	  != strlen (sendstr))
-	FAIL ();
-
-      char recvbuf[12];
-      if (recv (sp[1], recvbuf, sizeof recvbuf, MSG_PEEK)
-	  != sizeof recvbuf
-	  || memcmp (recvbuf, sendstr, sizeof recvbuf) != 0)
-	FAIL ();
-
-      if (recv (sp[1], recvbuf + 6, l0 + sizeof recvbuf - 7, MSG_PEEK)
-	  != sizeof recvbuf - 7
-	  || memcmp (recvbuf + 6, sendstr, sizeof recvbuf - 7) != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      if (recv (sp[1], recvbuf + 1, sizeof recvbuf, MSG_PEEK)
-	  != sizeof recvbuf)
-	FAIL ();
-      CHK_FAIL_END
-
-      CHK_FAIL_START
-      if (recv (sp[1], recvbuf + 4, l0 + sizeof recvbuf - 3, MSG_PEEK)
-	  != sizeof recvbuf - 3)
-	FAIL ();
-      CHK_FAIL_END
-#endif
-
-      socklen_t sl;
-      struct sockaddr_un sa_un;
-
-      sl = sizeof (sa_un);
-      if (recvfrom (sp[1], recvbuf, sizeof recvbuf, MSG_PEEK,
-		    (struct sockaddr *) &sa_un, &sl)
-	  != sizeof recvbuf
-	  || memcmp (recvbuf, sendstr, sizeof recvbuf) != 0)
-	FAIL ();
-
-      sl = sizeof (sa_un);
-      if (recvfrom (sp[1], recvbuf + 6, l0 + sizeof recvbuf - 7, MSG_PEEK,
-		    (struct sockaddr *) &sa_un, &sl) != sizeof recvbuf - 7
-	  || memcmp (recvbuf + 6, sendstr, sizeof recvbuf - 7) != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      sl = sizeof (sa_un);
-      if (recvfrom (sp[1], recvbuf + 1, sizeof recvbuf, MSG_PEEK,
-		    (struct sockaddr *) &sa_un, &sl) != sizeof recvbuf)
-	FAIL ();
-      CHK_FAIL_END
-
-      CHK_FAIL_START
-      sl = sizeof (sa_un);
-      if (recvfrom (sp[1], recvbuf + 4, l0 + sizeof recvbuf - 3, MSG_PEEK,
-		    (struct sockaddr *) &sa_un, &sl) != sizeof recvbuf - 3)
-	FAIL ();
-      CHK_FAIL_END
-#endif
-
-      close (sp[0]);
-      close (sp[1]);
-    }
-
-  char fname[] = "/tmp/tst-chk1-dir-XXXXXX\0foo";
-  char *enddir = strchr (fname, '\0');
-  if (mkdtemp (fname) == NULL)
-    {
-      printf ("mkdtemp failed: %m\n");
-      return 1;
-    }
-  *enddir = '/';
-  if (symlink ("bar", fname) != 0)
-    FAIL ();
-
-  char readlinkbuf[4];
-  if (readlink (fname, readlinkbuf, 4) != 3
-      || memcmp (readlinkbuf, "bar", 3) != 0)
-    FAIL ();
-  if (readlink (fname, readlinkbuf + 1, l0 + 3) != 3
-      || memcmp (readlinkbuf, "bbar", 4) != 0)
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (readlink (fname, readlinkbuf + 2, l0 + 3) != 3)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (readlink (fname, readlinkbuf + 3, 4) != 3)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  int tmpfd = open ("/tmp", O_RDONLY | O_DIRECTORY);
-  if (tmpfd < 0)
-    FAIL ();
-
-  if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf, 4) != 3
-      || memcmp (readlinkbuf, "bar", 3) != 0)
-    FAIL ();
-  if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf + 1,
-		  l0 + 3) != 3
-      || memcmp (readlinkbuf, "bbar", 4) != 0)
-    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf + 2,
-		  l0 + 3) != 3)
-    FAIL ();
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  if (readlinkat (tmpfd, fname + sizeof ("/tmp/") - 1, readlinkbuf + 3,
-		  4) != 3)
-    FAIL ();
-  CHK_FAIL_END
-#endif
-
-  close (tmpfd);
-
-  char *cwd1 = getcwd (NULL, 0);
-  if (cwd1 == NULL)
-    FAIL ();
-
-  char *cwd2 = getcwd (NULL, 250);
-  if (cwd2 == NULL)
-    FAIL ();
-
-  if (cwd1 && cwd2)
-    {
-      if (strcmp (cwd1, cwd2) != 0)
-	FAIL ();
-
-      *enddir = '\0';
-      if (chdir (fname))
-	FAIL ();
-
-      char *cwd3 = getcwd (NULL, 0);
-      if (cwd3 == NULL)
-	FAIL ();
-      if (strcmp (fname, cwd3) != 0)
-	printf ("getcwd after chdir is '%s' != '%s',"
-		"get{c,}wd tests skipped\n", cwd3, fname);
-      else
-	{
-	  char getcwdbuf[sizeof fname - 3];
-
-	  char *cwd4 = getcwd (getcwdbuf, sizeof getcwdbuf);
-	  if (cwd4 != getcwdbuf
-	      || strcmp (getcwdbuf, fname) != 0)
-	    FAIL ();
-
-	  cwd4 = getcwd (getcwdbuf + 1, l0 + sizeof getcwdbuf - 1);
-	  if (cwd4 != getcwdbuf + 1
-	      || getcwdbuf[0] != fname[0]
-	      || strcmp (getcwdbuf + 1, fname) != 0)
-	    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-	  CHK_FAIL_START
-	  if (getcwd (getcwdbuf + 2, l0 + sizeof getcwdbuf)
-	      != getcwdbuf + 2)
-	    FAIL ();
-	  CHK_FAIL_END
-
-	  CHK_FAIL_START
-	  if (getcwd (getcwdbuf + 2, sizeof getcwdbuf)
-	      != getcwdbuf + 2)
-	    FAIL ();
-	  CHK_FAIL_END
-#endif
-
-	  if (getwd (getcwdbuf) != getcwdbuf
-	      || strcmp (getcwdbuf, fname) != 0)
-	    FAIL ();
-
-	  if (getwd (getcwdbuf + 1) != getcwdbuf + 1
-	      || strcmp (getcwdbuf + 1, fname) != 0)
-	    FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-	  CHK_FAIL_START
-	  if (getwd (getcwdbuf + 2) != getcwdbuf + 2)
-	    FAIL ();
-	  CHK_FAIL_END
-#endif
-	}
-
-      if (chdir (cwd1) != 0)
-	FAIL ();
-      free (cwd3);
-    }
-
-  free (cwd1);
-  free (cwd2);
-  *enddir = '/';
-  if (unlink (fname) != 0)
-    FAIL ();
-
-  *enddir = '\0';
-  if (rmdir (fname) != 0)
-    FAIL ();
-
-
-#if PATH_MAX > 0
-  char largebuf[PATH_MAX];
-  char *realres = realpath (".", largebuf);
-  if (realres != largebuf)
-    FAIL ();
-
-# if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  char realbuf[1];
-  realres = realpath (".", realbuf);
-  if (realres != realbuf)
-    FAIL ();
-  CHK_FAIL_END
-# endif
-#endif
-
-  if (setlocale (LC_ALL, "de_DE.UTF-8") != NULL)
-    {
-      assert (MB_CUR_MAX <= 10);
-
-      /* First a simple test.  */
-      char enough[10];
-      if (wctomb (enough, L'A') != 1)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      /* We know the wchar_t encoding is ISO 10646.  So pick a
-	 character which has a multibyte representation which does not
-	 fit.  */
-      CHK_FAIL_START
-      char smallbuf[2];
-      if (wctomb (smallbuf, L'\x100') != 2)
-	FAIL ();
-      CHK_FAIL_END
-#endif
-
-      mbstate_t s;
-      memset (&s, '\0', sizeof (s));
-      if (wcrtomb (enough, L'D', &s) != 1 || enough[0] != 'D')
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      /* We know the wchar_t encoding is ISO 10646.  So pick a
-	 character which has a multibyte representation which does not
-	 fit.  */
-      CHK_FAIL_START
-      char smallbuf[2];
-      if (wcrtomb (smallbuf, L'\x100', &s) != 2)
-	FAIL ();
-      CHK_FAIL_END
-#endif
-
-      wchar_t wenough[10];
-      memset (&s, '\0', sizeof (s));
-      const char *cp = "A";
-      if (mbsrtowcs (wenough, &cp, 10, &s) != 1
-	  || wcscmp (wenough, L"A") != 0)
-	FAIL ();
-
-      cp = "BC";
-      if (mbsrtowcs (wenough, &cp, l0 + 10, &s) != 2
-	  || wcscmp (wenough, L"BC") != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      wchar_t wsmallbuf[2];
-      cp = "ABC";
-      mbsrtowcs (wsmallbuf, &cp, 10, &s);
-      CHK_FAIL_END
-#endif
-
-      cp = "A";
-      if (mbstowcs (wenough, cp, 10) != 1
-	  || wcscmp (wenough, L"A") != 0)
-	FAIL ();
-
-      cp = "DEF";
-      if (mbstowcs (wenough, cp, l0 + 10) != 3
-	  || wcscmp (wenough, L"DEF") != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      wchar_t wsmallbuf[2];
-      cp = "ABC";
-      mbstowcs (wsmallbuf, cp, 10);
-      CHK_FAIL_END
-#endif
-
-      memset (&s, '\0', sizeof (s));
-      cp = "ABC";
-      wcscpy (wenough, L"DEF");
-      if (mbsnrtowcs (wenough, &cp, 1, 10, &s) != 1
-	  || wcscmp (wenough, L"AEF") != 0)
-	FAIL ();
-
-      cp = "IJ";
-      if (mbsnrtowcs (wenough, &cp, 1, l0 + 10, &s) != 1
-	  || wcscmp (wenough, L"IEF") != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      wchar_t wsmallbuf[2];
-      cp = "ABC";
-      mbsnrtowcs (wsmallbuf, &cp, 3, 10, &s);
-      CHK_FAIL_END
-#endif
-
-      memset (&s, '\0', sizeof (s));
-      const wchar_t *wcp = L"A";
-      if (wcsrtombs (enough, &wcp, 10, &s) != 1
-	  || strcmp (enough, "A") != 0)
-	FAIL ();
-
-      wcp = L"BC";
-      if (wcsrtombs (enough, &wcp, l0 + 10, &s) != 2
-	  || strcmp (enough, "BC") != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      char smallbuf[2];
-      wcp = L"ABC";
-      wcsrtombs (smallbuf, &wcp, 10, &s);
-      CHK_FAIL_END
-#endif
-
-      memset (enough, 'Z', sizeof (enough));
-      wcp = L"EF";
-      if (wcstombs (enough, wcp, 10) != 2
-	  || strcmp (enough, "EF") != 0)
-	FAIL ();
-
-      wcp = L"G";
-      if (wcstombs (enough, wcp, l0 + 10) != 1
-	  || strcmp (enough, "G") != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      char smallbuf[2];
-      wcp = L"ABC";
-      wcstombs (smallbuf, wcp, 10);
-      CHK_FAIL_END
-#endif
-
-      memset (&s, '\0', sizeof (s));
-      wcp = L"AB";
-      if (wcsnrtombs (enough, &wcp, 1, 10, &s) != 1
-	  || strcmp (enough, "A") != 0)
-	FAIL ();
-
-      wcp = L"BCD";
-      if (wcsnrtombs (enough, &wcp, 1, l0 + 10, &s) != 1
-	  || strcmp (enough, "B") != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      char smallbuf[2];
-      wcp = L"ABC";
-      wcsnrtombs (smallbuf, &wcp, 3, 10, &s);
-      CHK_FAIL_END
-#endif
-    }
-  else
-    {
-      puts ("cannot set locale");
-      ret = 1;
-    }
-
-  int fd = posix_openpt (O_RDWR);
-  if (fd != -1)
-    {
-      char enough[1000];
-      if (ptsname_r (fd, enough, sizeof (enough)) != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      char smallbuf[2];
-      if (ptsname_r (fd, smallbuf, sizeof (smallbuf) + 1) == 0)
-	FAIL ();
-      CHK_FAIL_END
-#endif
-      close (fd);
-    }
-
-#if PATH_MAX > 0
-  confstr (_CS_GNU_LIBC_VERSION, largebuf, sizeof (largebuf));
-# if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  char smallbuf[1];
-  confstr (_CS_GNU_LIBC_VERSION, smallbuf, sizeof (largebuf));
-  CHK_FAIL_END
-# endif
-#endif
-
-  gid_t grpslarge[5];
-  int ngr = getgroups (5, grpslarge);
-  asm volatile ("" : : "r" (ngr));
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  char smallbuf[1];
-  ngr = getgroups (5, (gid_t *) smallbuf);
-  asm volatile ("" : : "r" (ngr));
-  CHK_FAIL_END
-#endif
-
-  fd = open (_PATH_TTY, O_RDONLY);
-  if (fd != -1)
-    {
-      char enough[1000];
-      if (ttyname_r (fd, enough, sizeof (enough)) != 0)
-	FAIL ();
-
-#if __USE_FORTIFY_LEVEL >= 1
-      CHK_FAIL_START
-      char smallbuf[2];
-      if (ttyname_r (fd, smallbuf, sizeof (smallbuf) + 1) == 0)
-	FAIL ();
-      CHK_FAIL_END
-#endif
-      close (fd);
-    }
-
-  char hostnamelarge[1000];
-  gethostname (hostnamelarge, sizeof (hostnamelarge));
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  char smallbuf[1];
-  gethostname (smallbuf, sizeof (hostnamelarge));
-  CHK_FAIL_END
-#endif
-
-  char loginlarge[1000];
-  getlogin_r (loginlarge, sizeof (hostnamelarge));
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  char smallbuf[1];
-  getlogin_r (smallbuf, sizeof (loginlarge));
-  CHK_FAIL_END
-#endif
-
-  char domainnamelarge[1000];
-  int res = getdomainname (domainnamelarge, sizeof (domainnamelarge));
-  asm volatile ("" : : "r" (res));
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  char smallbuf[1];
-  res = getdomainname (smallbuf, sizeof (domainnamelarge));
-  asm volatile ("" : : "r" (res));
-  CHK_FAIL_END
-#endif
-
-  fd_set s;
-  FD_ZERO (&s);
-
-  FD_SET (FD_SETSIZE - 1, &s);
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  FD_SET (FD_SETSIZE, &s);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  FD_SET (l0 + FD_SETSIZE, &s);
-  CHK_FAIL_END
-#endif
-
-  FD_CLR (FD_SETSIZE - 1, &s);
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  FD_CLR (FD_SETSIZE, &s);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  FD_SET (l0 + FD_SETSIZE, &s);
-  CHK_FAIL_END
-#endif
-
-  FD_ISSET (FD_SETSIZE - 1, &s);
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  FD_ISSET (FD_SETSIZE, &s);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  FD_ISSET (l0 + FD_SETSIZE, &s);
-  CHK_FAIL_END
-#endif
-
-  struct pollfd fds[1];
-  fds[0].fd = STDOUT_FILENO;
-  fds[0].events = POLLOUT;
-  poll (fds, 1, 0);
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  poll (fds, 2, 0);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  poll (fds, l0 + 2, 0);
-  CHK_FAIL_END
-#endif
-  ppoll (fds, 1, NULL, NULL);
-#if __USE_FORTIFY_LEVEL >= 1
-  CHK_FAIL_START
-  ppoll (fds, 2, NULL, NULL);
-  CHK_FAIL_END
-
-  CHK_FAIL_START
-  ppoll (fds, l0 + 2, NULL, NULL);
-  CHK_FAIL_END
-#endif
-
-  return ret;
-}