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-rw-r--r--gnulib-m4/wcrtomb.m492
1 files changed, 62 insertions, 30 deletions
diff --git a/gnulib-m4/wcrtomb.m4 b/gnulib-m4/wcrtomb.m4
index c4e4463..fee21d7 100644
--- a/gnulib-m4/wcrtomb.m4
+++ b/gnulib-m4/wcrtomb.m4
@@ -1,5 +1,5 @@
-# wcrtomb.m4 serial 12
-dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
+# wcrtomb.m4 serial 17
+dnl Copyright (C) 2008-2022 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.
@@ -15,15 +15,8 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
if test $ac_cv_func_wcrtomb = no; then
HAVE_WCRTOMB=0
AC_CHECK_DECLS([wcrtomb],,, [[
-/* 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>
-]])
+ #include <wchar.h>
+ ]])
if test $ac_cv_have_decl_wcrtomb = yes; then
dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although
dnl it does not have the function. Avoid a collision with gnulib's
@@ -31,17 +24,56 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
REPLACE_WCRTOMB=1
fi
else
- if test $REPLACE_MBSTATE_T = 1; then
- REPLACE_WCRTOMB=1
- else
- dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
- dnl returns 0 instead of 1.
+ dnl We don't actually need to override wcrtomb when redefining the semantics
+ dnl of the mbstate_t type. Tested on 32-bit AIX.
+ dnl if test $REPLACE_MBSTATE_T = 1; then
+ dnl REPLACE_WCRTOMB=1
+ dnl fi
+ if test $REPLACE_WCRTOMB = 0; then
+ dnl On Android 4.3, wcrtomb produces wrong characters in the C locale.
+ dnl On AIX 4.3, OSF/1 5.1 and Solaris <= 11.3, wcrtomb (NULL, 0, NULL)
+ dnl sometimes returns 0 instead of 1.
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gt_LOCALE_FR])
AC_REQUIRE([gt_LOCALE_FR_UTF8])
AC_REQUIRE([gt_LOCALE_JA])
AC_REQUIRE([gt_LOCALE_ZH_CN])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether wcrtomb works in the C locale],
+ [gl_cv_func_wcrtomb_works],
+ [AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+int main ()
+{
+ mbstate_t state;
+ char out[64];
+ int count;
+ memset (&state, 0, sizeof (state));
+ out[0] = 'x';
+ count = wcrtomb (out, L'a', &state);
+ return !(count == 1 && out[0] == 'a');
+}]])],
+ [gl_cv_func_wcrtomb_works=yes],
+ [gl_cv_func_wcrtomb_works=no],
+ [case "$host_os" in
+ # Guess no on Android.
+ linux*-android*) gl_cv_func_wcrtomb_works="guessing no";;
+ # Guess yes otherwise.
+ *) gl_cv_func_wcrtomb_works="guessing yes";;
+ esac
+ ])
+ ])
+ case "$gl_cv_func_wcrtomb_works" in
+ *yes) ;;
+ *) AC_DEFINE([WCRTOMB_C_LOCALE_BUG], [1],
+ [Define if the wcrtomb function does not work in the C locale.])
+ REPLACE_WCRTOMB=1 ;;
+ esac
+ fi
+ if test $REPLACE_WCRTOMB = 0; then
AC_CACHE_CHECK([whether wcrtomb return value is correct],
[gl_cv_func_wcrtomb_retval],
[
@@ -49,12 +81,10 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
dnl is present.
changequote(,)dnl
case "$host_os" in
- # Guess no on AIX 4, OSF/1 and Solaris.
- aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
- # Guess yes on native Windows.
- mingw*) gl_cv_func_wcrtomb_retval="guessing yes" ;;
- # Guess yes otherwise.
- *) gl_cv_func_wcrtomb_retval="guessing yes" ;;
+ # Guess no on AIX 4, OSF/1, Solaris, native Windows.
+ aix4* | osf* | solaris* | mingw*) gl_cv_func_wcrtomb_retval="guessing no" ;;
+ # Guess yes otherwise.
+ *) gl_cv_func_wcrtomb_retval="guessing yes" ;;
esac
changequote([,])dnl
if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
@@ -62,14 +92,8 @@ changequote([,])dnl
[AC_LANG_SOURCE([[
#include <locale.h>
#include <string.h>
-/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
- <wchar.h>.
- BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
- included before <wchar.h>. */
-#include <stddef.h>
-#include <stdio.h>
-#include <time.h>
#include <wchar.h>
+#include <stdlib.h>
int main ()
{
int result = 0;
@@ -82,6 +106,12 @@ int main ()
{
if (wcrtomb (NULL, 0, NULL) != 1)
result |= 2;
+ {
+ wchar_t wc = (wchar_t) 0xBADFACE;
+ if (mbtowc (&wc, "\303\274", 2) == 2)
+ if (wcrtomb (NULL, wc, NULL) != 1)
+ result |= 2;
+ }
}
if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
{
@@ -102,7 +132,9 @@ int main ()
])
case "$gl_cv_func_wcrtomb_retval" in
*yes) ;;
- *) REPLACE_WCRTOMB=1 ;;
+ *) AC_DEFINE([WCRTOMB_RETVAL_BUG], [1],
+ [Define if the wcrtomb function has an incorrect return value.])
+ REPLACE_WCRTOMB=1 ;;
esac
fi
fi