73cc72729a
This patch moves the gdb/gnulib subdirectory to the top level. It adjusts the top-level build system to build gnulib when necessary, and changes gdb to use this. However, gdbserver still builds its own copy of gnulib, just from the new source location. A small hack was needed to ensure that gnulib is only built when gdb is enabled. The Makefile only provides an ordering -- the directory must be mentioned in configdirs to actually be compiled at all. Most of the patch is just a "git mv" of gnulib, though a few minor path adjustments were needed in some files there. Tested by the buildbot. ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * MAINTAINERS: Add gnulib. * gnulib: New directory, move from gdb/gnulib. * configure.ac (host_libs): Add gnulib. * configure: Rebuild. * Makefile.def (host_modules, dependencies): Add gnulib. * Makefile.in: Rebuild. gdb/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * gnulib: Move directory to top-level. * configure.ac: Don't configure gnulib. * configure: Rebuild. * common/common-defs.h: Use new path to gnulib. * Makefile.in (GNULIB_BUILDDIR): Now ../gnulib. (GNULIB_H): Remove. (INCGNU): Look in new gnulib location. (HFILES_NO_SRCDIR): Remove gnulib files. (SUBDIR, REQUIRED_SUBDIRS): Remove gnulib. (generated_files): Remove GNULIB_H. ($(LIBGNU), all-lib): Remove targets. (distclean): Don't mention GNULIB_BUILDDIR. ($(GNULIB_BUILDDIR)/Makefile): Remove target. gdb/gdbserver/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * configure.ac: Use new path to gnulib. * configure: Rebuild. * Makefile.in (INCGNU, $(GNULIB_BUILDDIR)/Makefile): Use new path to gnulib. gnulib/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * update-gnulib.sh: Adjust paths. * Makefile.in: Adjust paths. * configure.ac: Adjust paths. Use ACX_LARGEFILE. * configure: Rebuild.
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* Test for initial conversion state.
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Copyright (C) 2008-2016 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2008.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <wchar.h>
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#include "verify.h"
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#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
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/* On native Windows, 'mbstate_t' is defined as 'int'. */
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int
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mbsinit (const mbstate_t *ps)
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{
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return ps == NULL || *ps == 0;
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}
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#else
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/* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs()
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and wcrtomb(), wcsrtombs().
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We assume that
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- sizeof (mbstate_t) >= 4,
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- only stateless encodings are supported (such as UTF-8 and EUC-JP, but
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not ISO-2022 variants),
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- for each encoding, the number of bytes for a wide character is <= 4.
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(This maximum is attained for UTF-8, GB18030, EUC-TW.)
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We define the meaning of mbstate_t as follows:
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- In mb -> wc direction, mbstate_t's first byte contains the number of
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buffered bytes (in the range 0..3), followed by up to 3 buffered bytes.
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- In wc -> mb direction, mbstate_t contains no information. In other
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words, it is always in the initial state. */
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verify (sizeof (mbstate_t) >= 4);
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int
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mbsinit (const mbstate_t *ps)
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{
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const char *pstate = (const char *)ps;
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return pstate == NULL || pstate[0] == 0;
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}
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#endif
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