Mercurial > gnulib
view m4/closedir.m4 @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
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date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
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# closedir.m4 serial 6 dnl Copyright (C) 2011-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_CLOSEDIR], [ AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS([closedir]) if test $ac_cv_func_closedir = no; then HAVE_CLOSEDIR=0 fi dnl Replace closedir() for supporting the gnulib-defined fchdir() function, dnl to keep fchdir's bookkeeping up-to-date. m4_ifdef([gl_FUNC_FCHDIR], [ gl_TEST_FCHDIR if test $HAVE_FCHDIR = 0; then if test $HAVE_CLOSEDIR = 1; then REPLACE_CLOSEDIR=1 fi fi ]) dnl Replace closedir() for supporting the gnulib-defined dirfd() function. case $host_os,$HAVE_CLOSEDIR in os2*,1) REPLACE_CLOSEDIR=1;; esac ])