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1/* testlib.c -- test functions for libbacktrace library
2 Copyright (C) 2012-2017 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Google.
4
5Redistribution and use in source and binary forms, with or without
6modification, are permitted provided that the following conditions are
7met:
8
9 (1) Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11
12 (2) Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in
14 the documentation and/or other materials provided with the
15 distribution.
16
17 (3) The name of the author may not be used to
18 endorse or promote products derived from this software without
19 specific prior written permission.
20
21THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
25INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31POSSIBILITY OF SUCH DAMAGE. */
32
33#include <assert.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37
38#include "filenames.h"
39
40#include "backtrace.h"
41
42#include "testlib.h"
43
44/* The backtrace state. */
45
46void *state;
47
48/* The number of failures. */
49
50int failures;
51
52/* Return the base name in a path. */
53
54const char *
55base (const char *p)
56{
57 const char *last;
58 const char *s;
59
60 last = NULL;
61 for (s = p; *s != '\0'; ++s)
62 {
63 if (IS_DIR_SEPARATOR (*s))
64 last = s + 1;
65 }
66 return last != NULL ? last : p;
67}
68
69/* Check an entry in a struct info array. */
70
71void
72check (const char *name, int index, const struct info *all, int want_lineno,
73 const char *want_function, const char *want_file, int *failed)
74{
75 if (*failed)
76 return;
77 if (all[index].filename == NULL || all[index].function == NULL)
78 {
79 fprintf (stderr, "%s: [%d]: missing file name or function name\n",
80 name, index);
81 *failed = 1;
82 return;
83 }
84 if (strcmp (base (all[index].filename), want_file) != 0)
85 {
86 fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,
87 all[index].filename, want_file);
88 *failed = 1;
89 }
90 if (all[index].lineno != want_lineno)
91 {
92 fprintf (stderr, "%s: [%d]: got %d expected %d\n", name, index,
93 all[index].lineno, want_lineno);
94 *failed = 1;
95 }
96 if (strcmp (all[index].function, want_function) != 0)
97 {
98 fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,
99 all[index].function, want_function);
100 *failed = 1;
101 }
102}
103
104/* The backtrace callback function. */
105
106int
107callback_one (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,
108 const char *filename, int lineno, const char *function)
109{
110 struct bdata *data = (struct bdata *) vdata;
111 struct info *p;
112
113 if (data->index >= data->max)
114 {
115 fprintf (stderr, "callback_one: callback called too many times\n");
116 data->failed = 1;
117 return 1;
118 }
119
120 p = &data->all[data->index];
121 if (filename == NULL)
122 p->filename = NULL;
123 else
124 {
125 p->filename = strdup (filename);
126 assert (p->filename != NULL);
127 }
128 p->lineno = lineno;
129 if (function == NULL)
130 p->function = NULL;
131 else
132 {
133 p->function = strdup (function);
134 assert (p->function != NULL);
135 }
136 ++data->index;
137
138 return 0;
139}
140
141/* An error callback passed to backtrace. */
142
143void
144error_callback_one (void *vdata, const char *msg, int errnum)
145{
146 struct bdata *data = (struct bdata *) vdata;
147
148 fprintf (stderr, "%s", msg);
149 if (errnum > 0)
150 fprintf (stderr, ": %s", strerror (errnum));
151 fprintf (stderr, "\n");
152 data->failed = 1;
153}
154
155/* The backtrace_simple callback function. */
156
157int
158callback_two (void *vdata, uintptr_t pc)
159{
160 struct sdata *data = (struct sdata *) vdata;
161
162 if (data->index >= data->max)
163 {
164 fprintf (stderr, "callback_two: callback called too many times\n");
165 data->failed = 1;
166 return 1;
167 }
168
169 data->addrs[data->index] = pc;
170 ++data->index;
171
172 return 0;
173}
174
175/* An error callback passed to backtrace_simple. */
176
177void
178error_callback_two (void *vdata, const char *msg, int errnum)
179{
180 struct sdata *data = (struct sdata *) vdata;
181
182 fprintf (stderr, "%s", msg);
183 if (errnum > 0)
184 fprintf (stderr, ": %s", strerror (errnum));
185 fprintf (stderr, "\n");
186 data->failed = 1;
187}
188
189/* The backtrace_syminfo callback function. */
190
191void
192callback_three (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,
193 const char *symname, uintptr_t symval,
194 uintptr_t symsize)
195{
196 struct symdata *data = (struct symdata *) vdata;
197
198 if (symname == NULL)
199 data->name = NULL;
200 else
201 {
202 data->name = strdup (symname);
203 assert (data->name != NULL);
204 }
205 data->val = symval;
206 data->size = symsize;
207}
208
209/* The backtrace_syminfo error callback function. */
210
211void
212error_callback_three (void *vdata, const char *msg, int errnum)
213{
214 struct symdata *data = (struct symdata *) vdata;
215
216 fprintf (stderr, "%s", msg);
217 if (errnum > 0)
218 fprintf (stderr, ": %s", strerror (errnum));
219 fprintf (stderr, "\n");
220 data->failed = 1;
221}
222
223/* The backtrace_create_state error callback function. */
224
225void
226error_callback_create (void *data ATTRIBUTE_UNUSED, const char *msg,
227 int errnum)
228{
229 fprintf (stderr, "%s", msg);
230 if (errnum > 0)
231 fprintf (stderr, ": %s", strerror (errnum));
232 fprintf (stderr, "\n");
233 exit (EXIT_FAILURE);
234}
235

Warning: That file was not part of the compilation database. It may have many parsing errors.