mbrtowc.m4		mbrtowc.m4
	# mbrtowc.m4 serial 17		# mbrtowc.m4 serial 26
	dnl Copyright (C) 2001-2002, 2004-2005, 2008-2010 Free Software Foundation,		dnl Copyright (C) 2001-2002, 2004-2005, 2008-2014 Free Software Foundation,
	dnl Inc.		dnl Inc.
	dnl This file is free software; the Free Software Foundation		dnl This file is free software; the Free Software Foundation
	dnl gives unlimited permission to copy and/or distribute it,		dnl gives unlimited permission to copy and/or distribute it,
	dnl with or without modifications, as long as this notice is preserved.		dnl with or without modifications, as long as this notice is preserved.
	AC_DEFUN([gl_FUNC_MBRTOWC],		AC_DEFUN([gl_FUNC_MBRTOWC],
	[		[
	AC_REQUIRE([gl_WCHAR_H_DEFAULTS])		AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
	AC_REQUIRE([AC_TYPE_MBSTATE_T])		AC_REQUIRE([AC_TYPE_MBSTATE_T])
	gl_MBSTATE_T_BROKEN		gl_MBSTATE_T_BROKEN
	AC_CHECK_FUNCS_ONCE([mbrtowc])		AC_CHECK_FUNCS_ONCE([mbrtowc])
	if test $ac_cv_func_mbrtowc = no; then		if test $ac_cv_func_mbrtowc = no; then
	HAVE_MBRTOWC=0		HAVE_MBRTOWC=0
			AC_CHECK_DECLS([mbrtowc],,, [[
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
			#include <wchar.h>
			]])
			if test $ac_cv_have_decl_mbrtowc = yes; then
			dnl On Minix 3.1.8, the system's <wchar.h> declares mbrtowc() althoug
			h
			dnl it does not have the function. Avoid a collision with gnulib's
			dnl replacement.
			REPLACE_MBRTOWC=1
			fi
	else		else
	if test $REPLACE_MBSTATE_T = 1; then		if test $REPLACE_MBSTATE_T = 1; then
	REPLACE_MBRTOWC=1		REPLACE_MBRTOWC=1
	else		else
	gl_MBRTOWC_NULL_ARG		gl_MBRTOWC_NULL_ARG1
			gl_MBRTOWC_NULL_ARG2
	gl_MBRTOWC_RETVAL		gl_MBRTOWC_RETVAL
	gl_MBRTOWC_NUL_RETVAL		gl_MBRTOWC_NUL_RETVAL
	case "$gl_cv_func_mbrtowc_null_arg" in		gl_MBRTOWC_EMPTY_INPUT
			case "$gl_cv_func_mbrtowc_null_arg1" in
			*yes) ;;
			*) AC_DEFINE([MBRTOWC_NULL_ARG1_BUG], [1],
			[Define if the mbrtowc function has the NULL pwc argument bug.
			])
			REPLACE_MBRTOWC=1
			;;
			esac
			case "$gl_cv_func_mbrtowc_null_arg2" in
	*yes) ;;		*yes) ;;
	*) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],		*) AC_DEFINE([MBRTOWC_NULL_ARG2_BUG], [1],
	[Define if the mbrtowc function has the NULL string argument b ug.])		[Define if the mbrtowc function has the NULL string argument b ug.])
	REPLACE_MBRTOWC=1		REPLACE_MBRTOWC=1
	;;		;;
	esac		esac
	case "$gl_cv_func_mbrtowc_retval" in		case "$gl_cv_func_mbrtowc_retval" in
	*yes) ;;		*yes) ;;
	*) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],		*) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
	[Define if the mbrtowc function returns a wrong return value.] )		[Define if the mbrtowc function returns a wrong return value.] )
	REPLACE_MBRTOWC=1		REPLACE_MBRTOWC=1
	;;		;;
	esac		esac
	case "$gl_cv_func_mbrtowc_nul_retval" in		case "$gl_cv_func_mbrtowc_nul_retval" in
	*yes) ;;		*yes) ;;
	*) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],		*) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
	[Define if the mbrtowc function does not return 0 for a NUL ch aracter.])		[Define if the mbrtowc function does not return 0 for a NUL ch aracter.])
	REPLACE_MBRTOWC=1		REPLACE_MBRTOWC=1
	;;		;;
	esac		esac
			case "$gl_cv_func_mbrtowc_empty_input" in
			*yes) ;;
			*) AC_DEFINE([MBRTOWC_EMPTY_INPUT_BUG], [1],
			[Define if the mbrtowc function does not return (size_t) -2
			for empty input.])
			REPLACE_MBRTOWC=1
			;;
			esac
	fi		fi
	fi		fi
	if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
	gl_REPLACE_WCHAR_H
	AC_LIBOBJ([mbrtowc])
	gl_PREREQ_MBRTOWC
	fi
	])		])
	dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way tha t		dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way tha t
	dnl redefines the semantics of the given mbstate_t type.		dnl redefines the semantics of the given mbstate_t type.
	dnl Result is REPLACE_MBSTATE_T.		dnl Result is REPLACE_MBSTATE_T.
	dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in orde r to		dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in orde r to
	dnl avoid inconsistencies.		dnl avoid inconsistencies.
	AC_DEFUN([gl_MBSTATE_T_BROKEN],		AC_DEFUN([gl_MBSTATE_T_BROKEN],
	[		[
	skipping to change at line 83		skipping to change at line 111
	*yes) ;;		*yes) ;;
	*) REPLACE_MBSTATE_T=1 ;;		*) REPLACE_MBSTATE_T=1 ;;
	esac		esac
	case "$gl_cv_func_mbrtowc_sanitycheck" in		case "$gl_cv_func_mbrtowc_sanitycheck" in
	*yes) ;;		*yes) ;;
	*) REPLACE_MBSTATE_T=1 ;;		*) REPLACE_MBSTATE_T=1 ;;
	esac		esac
	else		else
	REPLACE_MBSTATE_T=1		REPLACE_MBSTATE_T=1
	fi		fi
	if test $REPLACE_MBSTATE_T = 1; then
	gl_REPLACE_WCHAR_H
	fi
	])		])
	dnl Test whether mbrtowc puts the state into non-initial state when parsing an		dnl Test whether mbrtowc puts the state into non-initial state when parsing an
	dnl incomplete multibyte character.		dnl incomplete multibyte character.
	dnl Result is gl_cv_func_mbrtowc_incomplete_state.		dnl Result is gl_cv_func_mbrtowc_incomplete_state.
	AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],		AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE],
	[		[
	AC_REQUIRE([AC_PROG_CC])		AC_REQUIRE([AC_PROG_CC])
	AC_REQUIRE([gt_LOCALE_JA])		AC_REQUIRE([gt_LOCALE_JA])
	AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles		AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
	AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],		AC_CACHE_CHECK([whether mbrtowc handles incomplete characters],
	[gl_cv_func_mbrtowc_incomplete_state],		[gl_cv_func_mbrtowc_incomplete_state],
	[		[
	dnl Initial guess, used when cross-compiling or when no suitable loca le		dnl Initial guess, used when cross-compiling or when no suitable loca le
	dnl is present.		dnl is present.
	changequote(,)dnl		changequote(,)dnl
	case "$host_os" in		case "$host_os" in
	# Guess no on AIX and OSF/1.		# Guess no on AIX and OSF/1.
	osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;		aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;;
	# Guess yes otherwise.		# Guess yes otherwise.
	*) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;		*) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;;
	esac		esac
	changequote([,])dnl		changequote([,])dnl
	if test $LOCALE_JA != none; then		if test $LOCALE_JA != none; then
	AC_TRY_RUN([		AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
	#include <locale.h>		#include <locale.h>
	#include <string.h>		#include <string.h>
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
	#include <wchar.h>		#include <wchar.h>
	int main ()		int main ()
	{		{
	if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)		if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
	{		{
	const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */		const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
	mbstate_t state;		mbstate_t state;
	wchar_t wc;		wchar_t wc;
	memset (&state, '\0', sizeof (mbstate_t));		memset (&state, '\0', sizeof (mbstate_t));
	if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))		if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
	if (mbsinit (&state))		if (mbsinit (&state))
	return 1;		return 1;
	}		}
	return 0;		return 0;
	}],		}]])],
	[gl_cv_func_mbrtowc_incomplete_state=yes],		[gl_cv_func_mbrtowc_incomplete_state=yes],
	[gl_cv_func_mbrtowc_incomplete_state=no],		[gl_cv_func_mbrtowc_incomplete_state=no],
	[:])		[:])
	fi		fi
	])		])
	])		])
	dnl Test whether mbrtowc works not worse than mbtowc.		dnl Test whether mbrtowc works not worse than mbtowc.
	dnl Result is gl_cv_func_mbrtowc_sanitycheck.		dnl Result is gl_cv_func_mbrtowc_sanitycheck.
	skipping to change at line 159		skipping to change at line 192
	dnl is present.		dnl is present.
	changequote(,)dnl		changequote(,)dnl
	case "$host_os" in		case "$host_os" in
	# Guess no on Solaris 8.		# Guess no on Solaris 8.
	solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;		solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;;
	# Guess yes otherwise.		# Guess yes otherwise.
	*) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;		*) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;;
	esac		esac
	changequote([,])dnl		changequote([,])dnl
	if test $LOCALE_ZH_CN != none; then		if test $LOCALE_ZH_CN != none; then
	AC_TRY_RUN([		AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
	#include <locale.h>		#include <locale.h>
	#include <stdlib.h>		#include <stdlib.h>
	#include <string.h>		#include <string.h>
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
	#include <wchar.h>		#include <wchar.h>
	int main ()		int main ()
	{		{
	/* This fails on Solaris 8:		/* This fails on Solaris 8:
	mbrtowc returns 2, and sets wc to 0x00F0.		mbrtowc returns 2, and sets wc to 0x00F0.
	mbtowc returns 4 (correct) and sets wc to 0x5EDC. */		mbtowc returns 4 (correct) and sets wc to 0x5EDC. */
	if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)		if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
	{		{
	char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */		char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
	mbstate_t state;		mbstate_t state;
	wchar_t wc;		wchar_t wc;
	memset (&state, '\0', sizeof (mbstate_t));		memset (&state, '\0', sizeof (mbstate_t));
	if (mbrtowc (&wc, input + 3, 6, &state) != 4		if (mbrtowc (&wc, input + 3, 6, &state) != 4
	&& mbtowc (&wc, input + 3, 6) == 4)		&& mbtowc (&wc, input + 3, 6) == 4)
	return 1;		return 1;
	}		}
	return 0;		return 0;
	}],		}]])],
	[gl_cv_func_mbrtowc_sanitycheck=yes],		[gl_cv_func_mbrtowc_sanitycheck=yes],
	[gl_cv_func_mbrtowc_sanitycheck=no],		[gl_cv_func_mbrtowc_sanitycheck=no],
	[:])		[:])
	fi		fi
	])		])
	])		])
			dnl Test whether mbrtowc supports a NULL pwc argument correctly.
			dnl Result is gl_cv_func_mbrtowc_null_arg1.
			AC_DEFUN([gl_MBRTOWC_NULL_ARG1],
			[
			AC_REQUIRE([AC_PROG_CC])
			AC_REQUIRE([gt_LOCALE_FR_UTF8])
			AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
			AC_CACHE_CHECK([whether mbrtowc handles a NULL pwc argument],
			[gl_cv_func_mbrtowc_null_arg1],
			[
			dnl Initial guess, used when cross-compiling or when no suitable loca
			le
			dnl is present.
			changequote(,)dnl
			case "$host_os" in
			# Guess no on Solaris.
			solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;;
			# Guess yes otherwise.
			*) gl_cv_func_mbrtowc_null_arg1="guessing yes" ;;
			esac
			changequote([,])dnl
			if test $LOCALE_FR_UTF8 != none; then
			AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
			#include <locale.h>
			#include <stdlib.h>
			#include <string.h>
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
			#include <wchar.h>
			int main ()
			{
			int result = 0;
			if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
			{
			char input[] = "\303\237er";
			mbstate_t state;
			wchar_t wc;
			size_t ret;
			memset (&state, '\0', sizeof (mbstate_t));
			wc = (wchar_t) 0xBADFACE;
			ret = mbrtowc (&wc, input, 5, &state);
			if (ret != 2)
			result |= 1;
			if (!mbsinit (&state))
			result |= 2;
			memset (&state, '\0', sizeof (mbstate_t));
			ret = mbrtowc (NULL, input, 5, &state);
			if (ret != 2) /* Solaris 7 fails here: ret is -1. */
			result |= 4;
			if (!mbsinit (&state))
			result |= 8;
			}
			return result;
			}]])],
			[gl_cv_func_mbrtowc_null_arg1=yes],
			[gl_cv_func_mbrtowc_null_arg1=no],
			[:])
			fi
			])
			])
	dnl Test whether mbrtowc supports a NULL string argument correctly.		dnl Test whether mbrtowc supports a NULL string argument correctly.
	dnl Result is gl_cv_func_mbrtowc_null_arg.		dnl Result is gl_cv_func_mbrtowc_null_arg2.
	AC_DEFUN([gl_MBRTOWC_NULL_ARG],		AC_DEFUN([gl_MBRTOWC_NULL_ARG2],
	[		[
	AC_REQUIRE([AC_PROG_CC])		AC_REQUIRE([AC_PROG_CC])
	AC_REQUIRE([gt_LOCALE_FR_UTF8])		AC_REQUIRE([gt_LOCALE_FR_UTF8])
	AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles		AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
	AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],		AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument],
	[gl_cv_func_mbrtowc_null_arg],		[gl_cv_func_mbrtowc_null_arg2],
	[		[
	dnl Initial guess, used when cross-compiling or when no suitable loca le		dnl Initial guess, used when cross-compiling or when no suitable loca le
	dnl is present.		dnl is present.
	changequote(,)dnl		changequote(,)dnl
	case "$host_os" in		case "$host_os" in
	# Guess no on OSF/1.		# Guess no on OSF/1.
	osf*) gl_cv_func_mbrtowc_null_arg="guessing no" ;;		osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;;
	# Guess yes otherwise.		# Guess yes otherwise.
	*) gl_cv_func_mbrtowc_null_arg="guessing yes" ;;		*) gl_cv_func_mbrtowc_null_arg2="guessing yes" ;;
	esac		esac
	changequote([,])dnl		changequote([,])dnl
	if test $LOCALE_FR_UTF8 != none; then		if test $LOCALE_FR_UTF8 != none; then
	AC_TRY_RUN([		AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
	#include <locale.h>		#include <locale.h>
	#include <string.h>		#include <string.h>
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
	#include <wchar.h>		#include <wchar.h>
	int main ()		int main ()
	{		{
	if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)		if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
	{		{
	mbstate_t state;		mbstate_t state;
	wchar_t wc;		wchar_t wc;
	int ret;		int ret;
	memset (&state, '\0', sizeof (mbstate_t));		memset (&state, '\0', sizeof (mbstate_t));
	wc = (wchar_t) 0xBADFACE;		wc = (wchar_t) 0xBADFACE;
	mbrtowc (&wc, NULL, 5, &state);		mbrtowc (&wc, NULL, 5, &state);
	/* Check that wc was not modified. */		/* Check that wc was not modified. */
	if (wc != (wchar_t) 0xBADFACE)		if (wc != (wchar_t) 0xBADFACE)
	return 1;		return 1;
	}		}
	return 0;		return 0;
	}], [gl_cv_func_mbrtowc_null_arg=yes], [gl_cv_func_mbrtowc_null_arg=no], [:		}]])],
	])		[gl_cv_func_mbrtowc_null_arg2=yes],
			[gl_cv_func_mbrtowc_null_arg2=no],
			[:])
	fi		fi
	])		])
	])		])
	dnl Test whether mbrtowc, when parsing the end of a multibyte character,		dnl Test whether mbrtowc, when parsing the end of a multibyte character,
	dnl correctly returns the number of bytes that were needed to complete the		dnl correctly returns the number of bytes that were needed to complete the
	dnl character (not the total number of bytes of the multibyte character).		dnl character (not the total number of bytes of the multibyte character).
	dnl Result is gl_cv_func_mbrtowc_retval.		dnl Result is gl_cv_func_mbrtowc_retval.
	AC_DEFUN([gl_MBRTOWC_RETVAL],		AC_DEFUN([gl_MBRTOWC_RETVAL],
	[		[
	AC_REQUIRE([AC_PROG_CC])		AC_REQUIRE([AC_PROG_CC])
	AC_REQUIRE([gt_LOCALE_FR_UTF8])		AC_REQUIRE([gt_LOCALE_FR_UTF8])
	AC_REQUIRE([gt_LOCALE_JA])		AC_REQUIRE([gt_LOCALE_JA])
	AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles		AC_REQUIRE([AC_CANONICAL_HOST])
	AC_CACHE_CHECK([whether mbrtowc has a correct return value],		AC_CACHE_CHECK([whether mbrtowc has a correct return value],
	[gl_cv_func_mbrtowc_retval],		[gl_cv_func_mbrtowc_retval],
	[		[
	dnl Initial guess, used when cross-compiling or when no suitable loca le		dnl Initial guess, used when cross-compiling or when no suitable loca le
	dnl is present.		dnl is present.
	changequote(,)dnl		changequote(,)dnl
	case "$host_os" in		case "$host_os" in
	# Guess no on HP-UX and Solaris.		# Guess no on HP-UX, Solaris, native Win
	hpux* | solaris*) gl_cv_func_mbrtowc_retval="guessing no" ;;		dows.
	# Guess yes otherwise.		hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no"
	*) gl_cv_func_mbrtowc_retval="guessing yes" ;;		;;
			# Guess yes otherwise.
			*) gl_cv_func_mbrtowc_retval="guessing yes"
			;;
	esac		esac
	changequote([,])dnl		changequote([,])dnl
	if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then		if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
	AC_TRY_RUN([		|| { case "$host_os" in mingw*) true;; *) false;; esac; }; then
			AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
	#include <locale.h>		#include <locale.h>
	#include <string.h>		#include <string.h>
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
	#include <wchar.h>		#include <wchar.h>
	int main ()		int main ()
	{		{
			int result = 0;
			int found_some_locale = 0;
	/* This fails on Solaris. */		/* This fails on Solaris. */
	if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)		if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
	{		{
	char input[] = "B\303\274\303\237er"; /* "Büßer" */		char input[] = "B\303\274\303\237er"; /* "Büßer" */
	mbstate_t state;		mbstate_t state;
	wchar_t wc;		wchar_t wc;
	memset (&state, '\0', sizeof (mbstate_t));		memset (&state, '\0', sizeof (mbstate_t));
	if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))		if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
	{		{
	input[1] = '\0';		input[1] = '\0';
	if (mbrtowc (&wc, input + 2, 5, &state) != 1)		if (mbrtowc (&wc, input + 2, 5, &state) != 1)
	return 1;		result |= 1;
	}		}
			found_some_locale = 1;
	}		}
	/* This fails on HP-UX 11.11. */		/* This fails on HP-UX 11.11. */
	if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)		if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
	{		{
	char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */		char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */
	mbstate_t state;		mbstate_t state;
	wchar_t wc;		wchar_t wc;
	memset (&state, '\0', sizeof (mbstate_t));		memset (&state, '\0', sizeof (mbstate_t));
	if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))		if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2))
	{		{
	input[1] = '\0';		input[1] = '\0';
	if (mbrtowc (&wc, input + 2, 5, &state) != 2)		if (mbrtowc (&wc, input + 2, 5, &state) != 2)
	return 1;		result |= 2;
	}		}
			found_some_locale = 1;
	}		}
	return 0;		/* This fails on native Windows. */
	}],		if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
			{
			char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
			mbstate_t state;
			wchar_t wc;
			memset (&state, '\0', sizeof (mbstate_t));
			if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
			{
			input[3] = '\0';
			if (mbrtowc (&wc, input + 4, 4, &state) != 1)
			result |= 4;
			}
			found_some_locale = 1;
			}
			if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
			{
			char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
			mbstate_t state;
			wchar_t wc;
			memset (&state, '\0', sizeof (mbstate_t));
			if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
			{
			input[3] = '\0';
			if (mbrtowc (&wc, input + 4, 4, &state) != 1)
			result |= 8;
			}
			found_some_locale = 1;
			}
			if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
			{
			char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
			mbstate_t state;
			wchar_t wc;
			memset (&state, '\0', sizeof (mbstate_t));
			if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
			{
			input[3] = '\0';
			if (mbrtowc (&wc, input + 4, 4, &state) != 1)
			result |= 16;
			}
			found_some_locale = 1;
			}
			return (found_some_locale ? result : 77);
			}]])],
	[gl_cv_func_mbrtowc_retval=yes],		[gl_cv_func_mbrtowc_retval=yes],
	[gl_cv_func_mbrtowc_retval=no],		[if test $? != 77; then
			gl_cv_func_mbrtowc_retval=no
			fi
			],
	[:])		[:])
	fi		fi
	])		])
	])		])
	dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0 .		dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0 .
	dnl Result is gl_cv_func_mbrtowc_nul_retval.		dnl Result is gl_cv_func_mbrtowc_nul_retval.
	AC_DEFUN([gl_MBRTOWC_NUL_RETVAL],		AC_DEFUN([gl_MBRTOWC_NUL_RETVAL],
	[		[
	skipping to change at line 328		skipping to change at line 512
	dnl is present.		dnl is present.
	changequote(,)dnl		changequote(,)dnl
	case "$host_os" in		case "$host_os" in
	# Guess no on Solaris 8 and 9.		# Guess no on Solaris 8 and 9.
	solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;		solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;;
	# Guess yes otherwise.		# Guess yes otherwise.
	*) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;		*) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;;
	esac		esac
	changequote([,])dnl		changequote([,])dnl
	if test $LOCALE_ZH_CN != none; then		if test $LOCALE_ZH_CN != none; then
	AC_TRY_RUN([		AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
	#include <locale.h>		#include <locale.h>
	#include <string.h>		#include <string.h>
			/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included befor
			e
			<wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
			included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
	#include <wchar.h>		#include <wchar.h>
	int main ()		int main ()
	{		{
	/* This fails on Solaris 8 and 9. */		/* This fails on Solaris 8 and 9. */
	if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)		if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
	{		{
	mbstate_t state;		mbstate_t state;
	wchar_t wc;		wchar_t wc;
	memset (&state, '\0', sizeof (mbstate_t));		memset (&state, '\0', sizeof (mbstate_t));
	if (mbrtowc (&wc, "", 1, &state) != 0)		if (mbrtowc (&wc, "", 1, &state) != 0)
	return 1;		return 1;
	}		}
	return 0;		return 0;
	}],		}]])],
	[gl_cv_func_mbrtowc_nul_retval=yes],		[gl_cv_func_mbrtowc_nul_retval=yes],
	[gl_cv_func_mbrtowc_nul_retval=no],		[gl_cv_func_mbrtowc_nul_retval=no],
	[:])		[:])
	fi		fi
	])		])
	])		])
			dnl Test whether mbrtowc returns the correct value on empty input.
			AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT],
			[
			AC_REQUIRE([AC_PROG_CC])
			AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
			AC_CACHE_CHECK([whether mbrtowc works on empty input],
			[gl_cv_func_mbrtowc_empty_input],
			[
			dnl Initial guess, used when cross-compiling or when no suitable loca
			le
			dnl is present.
			changequote(,)dnl
			case "$host_os" in
			# Guess no on AIX and glibc systems.
			aix* | *-gnu*)
			gl_cv_func_mbrtowc_empty_input="guessing no" ;;
			*) gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
			esac
			changequote([,])dnl
			AC_RUN_IFELSE(
			[AC_LANG_SOURCE([[
			#include <wchar.h>
			static wchar_t wc;
			static mbstate_t mbs;
			int
			main (void)
			{
			return mbrtowc (&wc, "", 0, &mbs) == (size_t) -2;
			}]])],
			[gl_cv_func_mbrtowc_empty_input=no],
			[gl_cv_func_mbrtowc_empty_input=yes],
			[:])
			])
			])
	# Prerequisites of lib/mbrtowc.c.		# Prerequisites of lib/mbrtowc.c.
	AC_DEFUN([gl_PREREQ_MBRTOWC], [		AC_DEFUN([gl_PREREQ_MBRTOWC], [
	:		:
	])		])
	dnl From Paul Eggert		dnl From Paul Eggert
	dnl This override of an autoconf macro can be removed when autoconf 2.60 or		dnl This is an override of an autoconf macro.
	dnl newer can be assumed everywhere.
	m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.60]),[-1],[
	AC_DEFUN([AC_FUNC_MBRTOWC],		AC_DEFUN([AC_FUNC_MBRTOWC],
	[		[
	dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.		dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.
	AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],		AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
	gl_cv_func_mbrtowc,		gl_cv_func_mbrtowc,
	[AC_LINK_IFELSE(		[AC_LINK_IFELSE(
	[AC_LANG_PROGRAM(		[AC_LANG_PROGRAM(
	[[#include <wchar.h>]],		[[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
			included before <wchar.h>.
			BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h>
			must be included before <wchar.h>. */
			#include <stddef.h>
			#include <stdio.h>
			#include <time.h>
			#include <wchar.h>]],
	[[wchar_t wc;		[[wchar_t wc;
	char const s[] = "";		char const s[] = "";
	size_t n = 1;		size_t n = 1;
	mbstate_t state;		mbstate_t state;
	return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])] ,		return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])] ,
	gl_cv_func_mbrtowc=yes,		gl_cv_func_mbrtowc=yes,
	gl_cv_func_mbrtowc=no)])		gl_cv_func_mbrtowc=no)])
	if test $gl_cv_func_mbrtowc = yes; then		if test $gl_cv_func_mbrtowc = yes; then
	AC_DEFINE([HAVE_MBRTOWC], [1],		AC_DEFINE([HAVE_MBRTOWC], [1],
	[Define to 1 if mbrtowc and mbstate_t are properly declared.])		[Define to 1 if mbrtowc and mbstate_t are properly declared.])
	fi		fi
	])		])
	])
End of changes. 43 change blocks.
	47 lines changed or deleted		292 lines changed or added
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