Bug Summary

File:src/xlibi18n/mbWrap.c
Location:line 84, column 10
Description:Access to field 'methods' results in a dereference of a null pointer (loaded from variable 'fs')

Annotated Source Code

1/*
2
3Copyright 1991, 1998 The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included
12in all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
18OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20OTHER DEALINGS IN THE SOFTWARE.
21
22Except as contained in this notice, the name of The Open Group shall
23not be used in advertising or otherwise to promote the sale, use or
24other dealings in this Software without prior written authorization
25from The Open Group.
26
27*/
28/*
29 * Copyright 1991 by the Open Software Foundation
30 *
31 * Permission to use, copy, modify, distribute, and sell this software and its
32 * documentation for any purpose is hereby granted without fee, provided that
33 * the above copyright notice appear in all copies and that both that
34 * copyright notice and this permission notice appear in supporting
35 * documentation, and that the name of Open Software Foundation
36 * not be used in advertising or publicity pertaining to distribution of the
37 * software without specific, written prior permission. Open Software
38 * Foundation makes no representations about the suitability of this
39 * software for any purpose. It is provided "as is" without express or
40 * implied warranty.
41 *
42 * OPEN SOFTWARE FOUNDATION DISCLAIMS ALL WARRANTIES WITH REGARD TO
43 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
44 * FITNESS, IN NO EVENT SHALL OPEN SOFTWARE FOUNDATIONN BE
45 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
46 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
47 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
48 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
49 *
50 * M. Collins OSF
51 */
52
53#ifdef HAVE_CONFIG_H1
54#include <config.h>
55#endif
56#include "Xlibint.h"
57#include "Xlcint.h"
58
59void
60XmbDrawText(
61 Display *dpy,
62 Drawable d,
63 GC gc,
64 int x,
65 int y,
66 XmbTextItem *text_items,
67 int nitems)
68{
69 register XFontSet fs = NULL((void*)0);
1
'fs' initialized to a null pointer value
70 register XmbTextItem *p = text_items;
71 register int i = nitems;
72 register int esc;
73
74 /* ignore leading items with no fontset */
75 while (i && !p->font_set) {
2
Loop condition is true. Entering loop body
3
Loop condition is false. Execution continues on line 80
76 i--;
77 p++;
78 }
79
80 for (; --i >= 0; p++) {
4
Loop condition is true. Entering loop body
81 if (p->font_set)
5
Taking false branch
82 fs = p->font_set;
83 x += p->delta;
84 esc = (*fs->methods->mb_draw_string) (dpy, d, fs, gc, x, y,
6
Access to field 'methods' results in a dereference of a null pointer (loaded from variable 'fs')
85 p->chars, p->nchars);
86 if (!esc)
87 esc = fs->methods->mb_escapement (fs, p->chars, p->nchars);
88 x += esc;
89 }
90}
91
92void
93XmbDrawString(
94 Display *dpy,
95 Drawable d,
96 XFontSet font_set,
97 GC gc,
98 int x,
99 int y,
100 _Xconstconst char *text,
101 int text_len)
102{
103 (void)(*font_set->methods->mb_draw_string) (dpy, d, font_set, gc, x, y,
104 text, text_len);
105}
106
107
108void
109XmbDrawImageString(
110 Display *dpy,
111 Drawable d,
112 XFontSet font_set,
113 GC gc,
114 int x,
115 int y,
116 _Xconstconst char *text,
117 int text_len)
118{
119 (*font_set->methods->mb_draw_image_string) (dpy, d, font_set, gc, x, y,
120 text, text_len);
121}
122
123int
124XmbTextEscapement(
125 XFontSet font_set,
126 _Xconstconst char *text,
127 int text_len)
128{
129 return (*font_set->methods->mb_escapement) (font_set, text, text_len);
130}
131
132int
133XmbTextExtents(
134 XFontSet font_set,
135 _Xconstconst char *text,
136 int text_len,
137 XRectangle *overall_ink_extents,
138 XRectangle *overall_logical_extents)
139{
140 return (*font_set->methods->mb_extents) (font_set, text, text_len,
141 overall_ink_extents,
142 overall_logical_extents);
143}
144
145Statusint
146XmbTextPerCharExtents(
147 XFontSet font_set,
148 _Xconstconst char *text,
149 int text_len,
150 XRectangle *ink_extents_buffer,
151 XRectangle *logical_extents_buffer,
152 int buffer_size,
153 int *num_chars,
154 XRectangle *max_ink_extents,
155 XRectangle *max_logical_extents)
156{
157 return (*font_set->methods->mb_extents_per_char)
158 (font_set, text, text_len,
159 ink_extents_buffer, logical_extents_buffer,
160 buffer_size, num_chars, max_ink_extents, max_logical_extents);
161}