-# mbrtowc.m4 serial 33 -*- coding: utf-8 -*-
-dnl Copyright (C) 2001-2002, 2004-2005, 2008-2019 Free Software Foundation,
+# mbrtowc.m4 serial 37 -*- coding: utf-8 -*-
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2020 Free Software Foundation,
dnl Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_DEFUN([gl_FUNC_MBRTOWC],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+ AC_REQUIRE([gl_PTHREADLIB])
+ AC_CHECK_HEADERS_ONCE([threads.h])
AC_REQUIRE([AC_TYPE_MBSTATE_T])
gl_MBSTATE_T_BROKEN
gl_MBRTOWC_NULL_ARG2
gl_MBRTOWC_RETVAL
gl_MBRTOWC_NUL_RETVAL
+ gl_MBRTOWC_STORES_INCOMPLETE
gl_MBRTOWC_EMPTY_INPUT
gl_MBRTOWC_C_LOCALE
case "$gl_cv_func_mbrtowc_null_arg1" in
REPLACE_MBRTOWC=1
;;
esac
+ case "$gl_cv_func_mbrtowc_stores_incomplete" in
+ *no) ;;
+ *) AC_DEFINE([MBRTOWC_STORES_INCOMPLETE_BUG], [1],
+ [Define if the mbrtowc function stores a wide character when reporting incomplete input.])
+ REPLACE_MBRTOWC=1
+ ;;
+ esac
case "$gl_cv_func_mbrtowc_empty_input" in
*yes) ;;
*) AC_DEFINE([MBRTOWC_EMPTY_INPUT_BUG], [1],
REPLACE_MBRTOWC=1
;;
esac
- case $gl_cv_C_locale_sans_EILSEQ in
+ case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in
*yes) ;;
- *) AC_DEFINE([C_LOCALE_MAYBE_EILSEQ], [1],
- [Define to 1 if the C locale may have encoding errors.])
+ *) AC_DEFINE([MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ], [1],
+ [Define if the mbrtowc function may signal encoding errors in the C locale.])
REPLACE_MBRTOWC=1
;;
esac
fi
fi
+ if test $REPLACE_MBSTATE_T = 1; then
+ case "$host_os" in
+ mingw*) LIB_MBRTOWC= ;;
+ *)
+ gl_WEAK_SYMBOLS
+ case "$gl_cv_have_weak" in
+ *yes) LIB_MBRTOWC= ;;
+ *) LIB_MBRTOWC="$LIBPTHREAD" ;;
+ esac
+ ;;
+ esac
+ else
+ LIB_MBRTOWC=
+ fi
+ dnl LIB_MBRTOWC is expected to be '-pthread' or '-lpthread' on AIX
+ dnl with gcc or xlc, and empty otherwise.
+ AC_SUBST([LIB_MBRTOWC])
])
dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that
AC_DEFUN([gl_MBSTATE_T_BROKEN],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([AC_TYPE_MBSTATE_T])
AC_CHECK_FUNCS_ONCE([mbsinit])
AC_CHECK_FUNCS_ONCE([mbrtowc])
- if test $ac_cv_func_mbsinit = yes && test $ac_cv_func_mbrtowc = yes; then
+ dnl On native Windows, we know exactly how mbsinit() behaves and don't need
+ dnl to override it, even if - like on MSVC - mbsinit() is only defined as
+ dnl an inline function, not as a global function.
+ if case "$host_os" in
+ mingw*) true ;;
+ *) test $ac_cv_func_mbsinit = yes ;;
+ esac \
+ && test $ac_cv_func_mbrtowc = yes; then
gl_MBRTOWC_INCOMPLETE_STATE
gl_MBRTOWC_SANITYCHECK
REPLACE_MBSTATE_T=0
])
])
+dnl Test whether mbrtowc stores a wide character when reporting incomplete
+dnl input.
+
+AC_DEFUN([gl_MBRTOWC_STORES_INCOMPLETE],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether mbrtowc stores incomplete characters],
+ [gl_cv_func_mbrtowc_stores_incomplete],
+ [
+ dnl Initial guess, used when cross-compiling or when no suitable locale
+ dnl is present.
+changequote(,)dnl
+ case "$host_os" in
+ # Guess yes on native Windows.
+ mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;;
+ *) gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;;
+ esac
+changequote([,])dnl
+ case "$host_os" in
+ mingw*)
+ AC_RUN_IFELSE(
+ [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>
+int main ()
+{
+ int result = 0;
+ if (setlocale (LC_ALL, "French_France.65001") != NULL)
+ {
+ wchar_t wc = (wchar_t) 0xBADFACE;
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+ && wc != (wchar_t) 0xBADFACE)
+ result |= 1;
+ }
+ if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+ {
+ wchar_t wc = (wchar_t) 0xBADFACE;
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrtowc (&wc, "\226", 1, &state) == (size_t)(-2)
+ && wc != (wchar_t) 0xBADFACE)
+ result |= 2;
+ }
+ if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+ {
+ wchar_t wc = (wchar_t) 0xBADFACE;
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrtowc (&wc, "\245", 1, &state) == (size_t)(-2)
+ && wc != (wchar_t) 0xBADFACE)
+ result |= 4;
+ }
+ if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+ {
+ wchar_t wc = (wchar_t) 0xBADFACE;
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrtowc (&wc, "\261", 1, &state) == (size_t)(-2)
+ && wc != (wchar_t) 0xBADFACE)
+ result |= 8;
+ }
+ return result;
+}]])],
+ [gl_cv_func_mbrtowc_stores_incomplete=no],
+ [gl_cv_func_mbrtowc_stores_incomplete=yes],
+ [:])
+ ;;
+ *)
+ AC_REQUIRE([gt_LOCALE_FR_UTF8])
+ if test $LOCALE_FR_UTF8 != none; then
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+ included before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+int main ()
+{
+ if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
+ {
+ wchar_t wc = (wchar_t) 0xBADFACE;
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof (mbstate_t));
+ if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2)
+ && wc != (wchar_t) 0xBADFACE)
+ return 1;
+ }
+ return 0;
+}]])],
+ [gl_cv_func_mbrtowc_stores_incomplete=no],
+ [gl_cv_func_mbrtowc_stores_incomplete=yes],
+ [:])
+ fi
+ ;;
+ esac
+ ])
+])
+
dnl Test whether mbrtowc returns the correct value on empty input.
AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT],
[
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether the C locale is free of encoding errors],
- [gl_cv_C_locale_sans_EILSEQ],
+ [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ],
[
dnl Initial guess, used when cross-compiling or when no suitable locale
dnl is present.
- gl_cv_C_locale_sans_EILSEQ="$gl_cross_guess_normal"
+ gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal"
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
}
return 0;
]])],
- [gl_cv_C_locale_sans_EILSEQ=yes],
- [gl_cv_C_locale_sans_EILSEQ=no],
+ [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=yes],
+ [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=no],
[case "$host_os" in
# Guess yes on native Windows.
- mingw*) gl_cv_C_locale_sans_EILSEQ="guessing yes" ;;
+ mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;;
esac
])
])
])
-# Prerequisites of lib/mbrtowc.c.
+# Prerequisites of lib/mbrtowc.c and lib/lc-charset-dispatch.c.
AC_DEFUN([gl_PREREQ_MBRTOWC], [
AC_REQUIRE([AC_C_INLINE])
:
])
+# Prerequisites of lib/mbtowc-lock.c.
+AC_DEFUN([gl_PREREQ_MBTOWC_LOCK],
+[
+ gl_VISIBILITY
+])
+
dnl From Paul Eggert
projects / deliverable / binutils-gdb.git / blobdiff