Mercurial > gnulib
view m4/net_if_h.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> |
---|---|
date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
# net_if_h.m4 serial 1 dnl Copyright (C) 2006-2019 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_HEADER_NET_IF], [ AC_CACHE_CHECK([whether <net/if.h> is self-contained], [gl_cv_header_net_if_h_selfcontained], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <net/if.h>]], [[struct if_nameindex ni;]])], [gl_cv_header_net_if_h_selfcontained=yes], [gl_cv_header_net_if_h_selfcontained=no]) ]) if test $gl_cv_header_net_if_h_selfcontained = yes; then NET_IF_H='' else NET_IF_H='net/if.h' AC_CHECK_HEADERS([net/if.h], [], [], [[#include <sys/socket.h>]]) gl_NEXT_HEADERS([net/if.h]) if test $ac_cv_header_net_if_h = yes; then HAVE_NET_IF_H=1 else HAVE_NET_IF_H=0 fi AC_SUBST([HAVE_NET_IF_H]) fi AC_SUBST([NET_IF_H]) AM_CONDITIONAL([GL_GENERATE_NET_IF_H], [test -n "$NET_IF_H"]) ])