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Merge from gnulib

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* lib/getdtablesize.c, m4/dup2.m4, m4/fcntl.m4:
Update from gnulib, incorporating:
2015-02-23 dup2: doc and test for Android bug
2015-02-23 Replace dup2() on Android
2015-02-22 Android doesn't define RLIM_SAVED_*
This commit is contained in:
Paul Eggert 2015-02-24 16:38:16 -08:00
parent b74db6347c
commit 27bd6dadf4
4 changed files with 33 additions and 3 deletions
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12
m4/dup2.m4
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@ -1,4 +1,4 @@
#serial 22
#serial 24
dnl Copyright (C) 2002, 2005, 2007, 2009-2015 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -25,6 +25,12 @@ AC_DEFUN([gl_FUNC_DUP2],
#include <limits.h>
#include <sys/resource.h>
#include <unistd.h>
#ifndef RLIM_SAVED_CUR
# define RLIM_SAVED_CUR RLIM_INFINITY
#endif
#ifndef RLIM_SAVED_MAX
# define RLIM_SAVED_MAX RLIM_INFINITY
#endif
]],
[[int result = 0;
int bad_fd = INT_MAX;
@ -39,7 +45,7 @@ AC_DEFUN([gl_FUNC_DUP2],
if (fcntl (1, F_SETFD, FD_CLOEXEC) == -1)
result |= 1;
#endif
if (dup2 (1, 1) == 0)
if (dup2 (1, 1) != 1)
result |= 2;
#ifdef FD_CLOEXEC
if (fcntl (1, F_GETFD) != FD_CLOEXEC)
@ -70,6 +76,8 @@ AC_DEFUN([gl_FUNC_DUP2],
gl_cv_func_dup2_works="guessing no" ;;
haiku*) # on Haiku alpha 2, dup2(1, 1) resets FD_CLOEXEC.
gl_cv_func_dup2_works="guessing no" ;;
*-android*) # implemented using dup3(), which fails if oldfd == newfd
gl_cv_func_dup2_works="guessing no" ;;
*) gl_cv_func_dup2_works="guessing yes" ;;
esac])
])