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