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02d04eac24
When working on windows-nat.c, it's useful to see an error message in addition to the error number given by GetLastError. This patch moves strwinerror from gdbserver to gdbsupport, and then updates windows-nat.c to use it. A couple of minor changes to strwinerror (constify the return type and use the ARRAY_SIZE macro) are also included.
124 lines
2.5 KiB
C++
124 lines
2.5 KiB
C++
/* Error reporting facilities.
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Copyright (C) 1986-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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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 "common-defs.h"
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#include "errors.h"
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#ifdef USE_WIN32API
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#include <windows.h>
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#endif /* USE_WIN32API */
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/* See gdbsupport/errors.h. */
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void
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warning (const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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vwarning (fmt, ap);
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va_end (ap);
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}
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/* See gdbsupport/errors.h. */
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void
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error (const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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verror (fmt, ap);
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va_end (ap);
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}
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/* See gdbsupport/errors.h. */
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void
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internal_error (const char *file, int line, const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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internal_verror (file, line, fmt, ap);
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va_end (ap);
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}
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/* See gdbsupport/errors.h. */
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void
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internal_warning (const char *file, int line, const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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internal_vwarning (file, line, fmt, ap);
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va_end (ap);
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}
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#ifdef USE_WIN32API
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/* See errors.h. */
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const char *
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strwinerror (ULONGEST error)
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{
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static char buf[1024];
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TCHAR *msgbuf;
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DWORD lasterr = GetLastError ();
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DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
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| FORMAT_MESSAGE_ALLOCATE_BUFFER,
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NULL,
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error,
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0, /* Default language */
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(LPTSTR) &msgbuf,
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0,
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NULL);
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if (chars != 0)
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{
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/* If there is an \r\n appended, zap it. */
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if (chars >= 2
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&& msgbuf[chars - 2] == '\r'
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&& msgbuf[chars - 1] == '\n')
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{
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chars -= 2;
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msgbuf[chars] = 0;
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}
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if (chars > ARRAY_SIZE (buf) - 1)
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{
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chars = ARRAY_SIZE (buf) - 1;
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msgbuf [chars] = 0;
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}
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#ifdef UNICODE
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wcstombs (buf, msgbuf, chars + 1);
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#else
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strncpy (buf, msgbuf, chars + 1);
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#endif
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LocalFree (msgbuf);
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}
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else
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sprintf (buf, "unknown win32 error (%u)", (unsigned) error);
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SetLastError (lasterr);
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return buf;
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}
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#endif /* USE_WIN32API */
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