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-rw-r--r--m4/getcwd-abort-bug.m4106
1 files changed, 0 insertions, 106 deletions
diff --git a/m4/getcwd-abort-bug.m4 b/m4/getcwd-abort-bug.m4
deleted file mode 100644
index a431a7ccc..000000000
--- a/m4/getcwd-abort-bug.m4
+++ /dev/null
@@ -1,106 +0,0 @@
-#serial 1
-# Determine whether getcwd aborts when the length of the working directory
-# name is unusually large. Any length between 4k and 16k trigger the bug
-# when using glibc-2.4.90-9 or older.
-
-# Copyright (C) 2006 Free Software Foundation, Inc.
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# From Jim Meyering
-
-# gl_FUNC_GETCWD_ABORT_BUG([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-AC_DEFUN([gl_FUNC_GETCWD_ABORT_BUG],
-[
- AC_CHECK_DECLS_ONCE(getcwd)
- AC_CHECK_FUNCS(getpagesize)
- AC_CACHE_CHECK([whether getcwd aborts when 4k < cwd_length < 16k],
- gl_cv_func_getcwd_abort_bug,
- [# Remove any remnants of a previous test.
- rm -rf confdir-14B---
- # Arrange for deletion of the temporary directory this test creates.
- ac_clean_files="$ac_clean_files confdir-14B---"
- AC_RUN_IFELSE(
- [AC_LANG_SOURCE(
- [[
-#include <stdlib.h>
-#include <unistd.h>
-#include <limits.h>
-#include <string.h>
-#include <sys/stat.h>
-
-/* Don't get link errors because mkdir is redefined to rpl_mkdir. */
-#undef mkdir
-
-#ifndef S_IRWXU
-# define S_IRWXU 0700
-#endif
-
-/* FIXME: skip the run-test altogether on systems without getpagesize. */
-#if ! HAVE_GETPAGESIZE
-# define getpagesize() 0
-#endif
-
-/* This size is chosen to be larger than PATH_MAX (4k), yet smaller than
- the 16kB pagesize on ia64 linux. Those conditions make the code below
- trigger a bug in glibc's getcwd implementation before 2.4.90-10. */
-#define TARGET_LEN (5 * 1024)
-
-int
-main ()
-{
- char const *dir_name = "confdir-14B---";
- char *cwd;
- size_t initial_cwd_len;
- int fail = 0;
- size_t desired_depth;
- size_t d;
-
- /* The bug is triggered when PATH_MAX < getpagesize (), so skip
- this relative expensive and invasive test if that's not true. */
- if (getpagesize () <= PATH_MAX)
- return 0;
-
- cwd = getcwd (NULL, 0);
- if (cwd == NULL)
- return 0;
-
- initial_cwd_len = strlen (cwd);
- free (cwd);
- desired_depth = ((TARGET_LEN - 1 - initial_cwd_len)
- / (1 + strlen (dir_name)));
- for (d = 0; d < desired_depth; d++)
- {
- if (mkdir (dir_name, S_IRWXU) < 0 || chdir (dir_name) < 0)
- {
- fail = 3; /* Unable to construct deep hierarchy. */
- break;
- }
- }
-
- /* If libc has the bug in question, this invocation of getcwd
- results in a failed assertion. */
- cwd = getcwd (NULL, 0);
- if (cwd == NULL)
- fail = 4; /* getcwd failed. This is ok, and expected. */
- free (cwd);
-
- /* Call rmdir first, in case the above chdir failed. */
- rmdir (dir_name);
- while (0 < d--)
- {
- if (chdir ("..") < 0)
- break;
- rmdir (dir_name);
- }
-
- return 0;
-}
- ]])],
- [gl_cv_func_getcwd_abort_bug=no],
- [gl_cv_func_getcwd_abort_bug=yes],
- [gl_cv_func_getcwd_abort_bug=yes])
- ])
- AS_IF([test $gl_cv_func_getcwd_abort_bug = yes], [$1], [$2])
-])