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annotate tests/test-canonicalize-lgpl.c @ 16817:7747cb9b54b9

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unistd_h: make it easier to avoid sys_types_h This is useful for Emacs, which has its own method of porting to Windows, and which therefore does not need the sys_types_h module. * m4/off_t.m4: New file, defining gl_TYPE_OFF_T, which contains code moved here from gl_SYS_TYPES_H. * m4/sys_types_h.m4 (gl_SYS_TYPES_H): Require it instead of using the code directly. * m4/unistd_h.m4 (gl_UNISTD_H): Require gl_TYPE_OFF_T, not gl_SYS_TYPES_H. * modules/sys_types (Files): * modules/unistd (Files): Add m4/off_t.m4.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 04 May 2012 13:05:31 -0700
parents 8250f2777afc
children e542fd46ad6f
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1 /* Test of execution of program termination handlers.
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2 Copyright (C) 2007-2012 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16
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17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
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18
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19 #include <config.h>
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20
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21 #include <stdlib.h>
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22
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23 #include "signature.h"
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24 SIGNATURE_CHECK (realpath, char *, (const char *, char *));
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25 SIGNATURE_CHECK (canonicalize_file_name, char *, (const char *));
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26
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27 #include <errno.h>
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28 #include <fcntl.h>
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29 #include <stdio.h>
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30 #include <string.h>
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31 #include <sys/stat.h>
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32 #include <unistd.h>
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33
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34 #include "same-inode.h"
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35 #include "ignore-value.h"
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36 #include "macros.h"
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37
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38 #define BASE "t-can-lgpl.tmp"
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39
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40 static void *
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41 null_ptr (void)
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42 {
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43 return NULL;
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44 }
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45
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46 int
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47 main (void)
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48 {
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49 #if GNULIB_TEST_CANONICALIZE
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50 /* No need to test canonicalize-lgpl module if canonicalize is also
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51 in use. */
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52 return 0;
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53 #endif
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54
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55 /* Setup some hierarchy to be used by this test. Start by removing
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56 any leftovers from a previous partial run. */
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57 {
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58 int fd;
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59 ignore_value (system ("rm -rf " BASE " ise"));
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60 ASSERT (mkdir (BASE, 0700) == 0);
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61 fd = creat (BASE "/tra", 0600);
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62 ASSERT (0 <= fd);
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63 ASSERT (close (fd) == 0);
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64 }
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65
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66 /* Check for ., .., intermediate // handling, and for error cases. */
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67 {
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68 char *result = canonicalize_file_name (BASE "//./..//" BASE "/tra");
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69 ASSERT (result != NULL);
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70 ASSERT (strstr (result, "/" BASE "/tra")
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71 == result + strlen (result) - strlen ("/" BASE "/tra"));
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72 free (result);
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73 errno = 0;
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74 result = canonicalize_file_name ("");
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75 ASSERT (result == NULL);
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76 ASSERT (errno == ENOENT);
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77 errno = 0;
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78 result = canonicalize_file_name (null_ptr ());
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79 ASSERT (result == NULL);
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80 ASSERT (errno == EINVAL);
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81 }
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82
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83 /* Check that a non-directory with trailing slash yields NULL. */
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84 {
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85 char *result;
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86 errno = 0;
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87 result = canonicalize_file_name (BASE "/tra/");
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88 ASSERT (result == NULL);
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89 ASSERT (errno == ENOTDIR);
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90 }
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91
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92 /* Check that a missing directory yields NULL. */
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93 {
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94 char *result;
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95 errno = 0;
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96 result = canonicalize_file_name (BASE "/zzz/..");
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97 ASSERT (result == NULL);
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98 ASSERT (errno == ENOENT);
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99 }
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100
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101 /* From here on out, tests involve symlinks. */
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102 if (symlink (BASE "/ket", "ise") != 0)
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103 {
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104 ASSERT (remove (BASE "/tra") == 0);
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105 ASSERT (rmdir (BASE) == 0);
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106 fputs ("skipping test: symlinks not supported on this file system\n",
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107 stderr);
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108 return 77;
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109 }
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110 ASSERT (symlink ("bef", BASE "/plo") == 0);
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111 ASSERT (symlink ("tra", BASE "/huk") == 0);
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112 ASSERT (symlink ("lum", BASE "/bef") == 0);
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113 ASSERT (symlink ("wum", BASE "/ouk") == 0);
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114 ASSERT (symlink ("../ise", BASE "/ket") == 0);
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115 ASSERT (mkdir (BASE "/lum", 0700) == 0);
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116 ASSERT (symlink ("//.//../..", BASE "/droot") == 0);
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117
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118 /* Check that the symbolic link to a file can be resolved. */
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119 {
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120 char *result1 = canonicalize_file_name (BASE "/huk");
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121 char *result2 = canonicalize_file_name (BASE "/tra");
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122 ASSERT (result1 != NULL);
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123 ASSERT (result2 != NULL);
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124 ASSERT (strcmp (result1, result2) == 0);
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125 ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/tra"),
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126 "/" BASE "/tra") == 0);
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127 free (result1);
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128 free (result2);
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129 }
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130
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131 /* Check that the symbolic link to a directory can be resolved. */
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132 {
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133 char *result1 = canonicalize_file_name (BASE "/plo");
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134 char *result2 = canonicalize_file_name (BASE "/bef");
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135 char *result3 = canonicalize_file_name (BASE "/lum");
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136 ASSERT (result1 != NULL);
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137 ASSERT (result2 != NULL);
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138 ASSERT (result3 != NULL);
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139 ASSERT (strcmp (result1, result2) == 0);
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140 ASSERT (strcmp (result2, result3) == 0);
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141 ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/lum"),
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142 "/" BASE "/lum") == 0);
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143 free (result1);
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144 free (result2);
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145 free (result3);
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146 }
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147
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148 /* Check that a symbolic link to a nonexistent file yields NULL. */
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149 {
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150 char *result;
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151 errno = 0;
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152 result = canonicalize_file_name (BASE "/ouk");
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153 ASSERT (result == NULL);
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154 ASSERT (errno == ENOENT);
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155 }
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156
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157 /* Check that a non-directory symlink with trailing slash yields NULL. */
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158 {
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159 char *result;
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160 errno = 0;
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161 result = canonicalize_file_name (BASE "/huk/");
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162 ASSERT (result == NULL);
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163 ASSERT (errno == ENOTDIR);
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164 }
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165
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166 /* Check that a missing directory via symlink yields NULL. */
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167 {
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168 char *result;
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169 errno = 0;
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170 result = canonicalize_file_name (BASE "/ouk/..");
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171 ASSERT (result == NULL);
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172 ASSERT (errno == ENOENT);
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173 }
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174
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175 /* Check that a loop of symbolic links is detected. */
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176 {
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177 char *result;
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178 errno = 0;
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179 result = canonicalize_file_name ("ise");
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180 ASSERT (result == NULL);
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181 ASSERT (errno == ELOOP);
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182 }
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183
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184 /* Check that leading // is honored correctly. */
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185 {
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186 struct stat st1;
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187 struct stat st2;
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188 char *result1 = canonicalize_file_name ("//.");
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189 char *result2 = canonicalize_file_name (BASE "/droot");
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190 ASSERT (result1);
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191 ASSERT (result2);
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192 ASSERT (stat ("/", &st1) == 0);
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193 ASSERT (stat ("//", &st2) == 0);
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194 if (SAME_INODE (st1, st2))
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195 {
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196 ASSERT (strcmp (result1, "/") == 0);
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197 ASSERT (strcmp (result2, "/") == 0);
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198 }
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199 else
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200 {
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201 ASSERT (strcmp (result1, "//") == 0);
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202 ASSERT (strcmp (result2, "//") == 0);
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203 }
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204 free (result1);
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205 free (result2);
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206 }
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207
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208
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209 /* Cleanup. */
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210 ASSERT (remove (BASE "/droot") == 0);
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211 ASSERT (remove (BASE "/plo") == 0);
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212 ASSERT (remove (BASE "/huk") == 0);
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213 ASSERT (remove (BASE "/bef") == 0);
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214 ASSERT (remove (BASE "/ouk") == 0);
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215 ASSERT (remove (BASE "/ket") == 0);
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216 ASSERT (remove (BASE "/lum") == 0);
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217 ASSERT (remove (BASE "/tra") == 0);
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218 ASSERT (remove (BASE) == 0);
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219 ASSERT (remove ("ise") == 0);
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220
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221 return 0;
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222 }