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ShellPkg/for: Fix potential null pointer deference
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2aa62f2b 1/* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 thorpej Exp $ */\r
2\r
3/*-\r
4 * Copyright (c)2001 Citrus Project,\r
5 * All rights reserved.\r
6 *\r
7 * Redistribution and use in source and binary forms, with or without\r
8 * modification, are permitted provided that the following conditions\r
9 * are met:\r
10 * 1. Redistributions of source code must retain the above copyright\r
11 * notice, this list of conditions and the following disclaimer.\r
12 * 2. Redistributions in binary form must reproduce the above copyright\r
13 * notice, this list of conditions and the following disclaimer in the\r
14 * documentation and/or other materials provided with the distribution.\r
15 *\r
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
26 * SUCH DAMAGE.\r
27 *\r
28 * $Citrus$\r
29 */\r
30\r
31#ifndef _WCIO_H_\r
32#define _WCIO_H_\r
33\r
34#include <wchar.h> /* for mbstate_t and wchar_t */\r
35\r
36/* minimal requirement of SUSv2 */\r
37#define WCIO_UNGETWC_BUFSIZE 1\r
38\r
39#define WCIO_GET(fp) (&(_EXT(fp)->_wcio))\r
40\r
41struct wchar_io_data {\r
42 mbstate_t wcio_mbstate_in;\r
43 mbstate_t wcio_mbstate_out;\r
44\r
45 wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];\r
46 size_t wcio_ungetwc_inbuf;\r
47\r
48 int wcio_mode; /* orientation */\r
49};\r
50\r
51#define _SET_ORIENTATION(fp, mode) \\r
52do {\\r
53 struct wchar_io_data *_wcio = WCIO_GET(fp);\\r
54 if (_wcio && _wcio->wcio_mode == 0)\\r
55 _wcio->wcio_mode = (mode);\\r
56} while (/*CONSTCOND*/0)\r
57\r
58/*\r
59 * WCIO_FREE should be called by fclose\r
60 */\r
61#define WCIO_FREE(fp) \\r
62do {\\r
63 _EXT(fp)->_wcio.wcio_mode = 0;\\r
64 WCIO_FREEUB(fp);\\r
65} while (/*CONSTCOND*/0)\r
66\r
67#define WCIO_FREEUB(fp) \\r
68do {\\r
69 _EXT(fp)->_wcio.wcio_ungetwc_inbuf = 0;\\r
70} while (/*CONSTCOND*/0)\r
71\r
72#endif /*_WCIO_H_*/\r