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annotate packages/services/memalloc/common/current/tests/malloc1.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
parents
children 518f42066aba
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115
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1 //=================================================================
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2 //
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3 // malloc1.c
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4 //
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5 // Testcase for C library malloc(), calloc() and free()
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6 //
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7 //=================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //=================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): jlarmour
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35 // Contributors:
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36 // Date: 2000-04-30
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37 // Description: Contains testcode for C library malloc(), calloc() and
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38 // free() functions
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39 //
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40 //
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41 //####DESCRIPTIONEND####
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42
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43 // INCLUDES
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44
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45 #include <pkgconf/system.h>
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46 #include <pkgconf/memalloc.h> // config header
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47 #ifdef CYGPKG_ISOINFRA
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48 # include <pkgconf/isoinfra.h>
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49 # include <stdlib.h>
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50 #endif
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51 #include <cyg/infra/testcase.h>
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52 #include <limits.h> // INT_MAX
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53
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54
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55 #if !defined(CYGPKG_ISOINFRA)
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56 # define NA_MSG "Requires isoinfra package"
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57 #elif !CYGINT_ISO_MAIN_STARTUP
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58 # define NA_MSG "Requires main() to be called"
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59 #elif !CYGINT_ISO_MALLOC
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60 # define NA_MSG "Requires malloc"
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61 #elif !CYGINT_ISO_MALLINFO
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62 # define NA_MSG "Requires mallinfo"
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63 #endif
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64
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65 #ifdef NA_MSG
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66 void
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67 cyg_start()
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68 {
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69 CYG_TEST_INIT();
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70 CYG_TEST_NA( NA_MSG );
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71 CYG_TEST_FINISH("Done");
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72 }
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73 #else
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74
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75
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76 // FUNCTIONS
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77
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78 int
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79 main( int argc, char *argv[] )
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80 {
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81 int *i;
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82 char *str, *str2, *str3;
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83 int j;
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84 int poolmax;
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85
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86 CYG_TEST_INIT();
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87
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88 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
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89 "malloc(), calloc() and free() functions");
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90
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91 poolmax = mallinfo().maxfree;
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92
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93 if ( poolmax <= 0 ) {
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94 CYG_TEST_FAIL_FINISH( "Can't determine allocation size to use" );
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95 }
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96
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97 // Test 1
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98 i = (int *) malloc( sizeof(int) );
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99
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100 // check if it should fit into pool
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101 if (sizeof(int) > poolmax)
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102 {
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103 // didn't fit into pool, so should be NULL
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104 CYG_TEST_PASS_FAIL( i == NULL,
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105 "1 int malloc with no space left works" );
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106 }
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107 else
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108 {
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109 // since it should fit into pool, we can fiddle with i
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110 *i=-12345;
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111 CYG_TEST_PASS_FAIL( i && (*i==-12345),
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112 "1 int malloc with space left works" );
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113 free(i);
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114 } // else
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115
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116 // Test 2
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117 str=(char *) malloc( 4096 );
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118
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119 if ( 4096 > poolmax)
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120 {
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121 // didn't fit into pool, so should be NULL
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122 CYG_TEST_PASS_FAIL( str == NULL,"4K string with no space left works" );
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123 }
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124 else
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125 {
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126 // since it should fit into pool, we can fiddle with it.
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127 for (j=0; j<1024; j++)
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128 {
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129 str[j*4] = 'f';
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130 str[(j*4)+1] = 'r';
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131 str[(j*4)+2] = 'e';
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132 str[(j*4)+3] = 'd';
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133 } // for
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134
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135 for (j=0; j<1024; j++)
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136 {
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137 if ( ((str[j*4] != 'f') ||
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138 (str[(j*4)+1] != 'r') ||
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139 (str[(j*4)+2] != 'e') ||
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140 (str[(j*4)+3] != 'd')) )
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141 break;
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142 } // for
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143
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144 // did j reach the top?
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145 CYG_TEST_PASS_FAIL( j==1024, "4K string with space left works" );
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146
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147 free(str);
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148 } // else
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149
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150
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151 // Test 3
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152 str=(char *) calloc( 2, 1024 );
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153
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154 if ( 2048 > poolmax)
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155 {
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156 // didn't fit into pool, so should be NULL
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157 CYG_TEST_PASS_FAIL( str == NULL,
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158 "calloc 2K string with no space left works" );
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159 }
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160 else
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161 {
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162 // check its zeroed
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163 for ( j=0; j<2048; j++ )
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164 {
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165 if (str[j] != 0)
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166 break;
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167 } // for
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168
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169 CYG_TEST_PASS_FAIL( j==2048, "calloc 2K string is cleared" );
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170
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171 // since it should fit into pool, we can fiddle with it.
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172 for (j=0; j<512; j++)
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173 {
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174 str[j*4] = 'j';
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175 str[(j*4)+1] = 'i';
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176 str[(j*4)+2] = 'f';
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177 str[(j*4)+3] = 'l';
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178 } // for
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179
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180 for (j=0; j<512; j++)
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181 {
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182 if ( ((str[j*4] != 'j') ||
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183 (str[(j*4)+1] != 'i') ||
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184 (str[(j*4)+2] != 'f') ||
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185 (str[(j*4)+3] != 'l')) )
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186 break;
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187 } // for
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188
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189 // did j reach the top?
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190 CYG_TEST_PASS_FAIL( j==512,
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191 "calloc 2K string - with space left works" );
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192
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193 free(str);
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194 } // else
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195
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196
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197 // Test 4
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198 str=(char *)malloc( poolmax+1 );
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199
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200 CYG_TEST_PASS_FAIL( str==NULL, "malloc too much data returns NULL" );
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201
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202 // Test 5
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203 str=(char *)calloc( 1, poolmax+1 );
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204 CYG_TEST_PASS_FAIL( str==NULL, "calloc too much data returns NULL" );
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205
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206 // Test 6
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207 str=(char *)malloc(0);
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208 str=(char *)calloc(0, 1);
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209 str=(char *)calloc(1, 0);
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210 str=(char *)calloc(0, 0);
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211 // simply shouldn't barf by this point
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212
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213 CYG_TEST_PASS_FAIL( 1, "malloc and calloc of 0 bytes doesn't crash" );
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214
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215 // Test 7
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216 str = (char *)malloc(10);
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217 i = (int *)malloc(sizeof(int));
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218 str2 = (char *)malloc(10);
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219
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220 str3=(char *)i;
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221
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222 CYG_TEST_PASS_FAIL( ((str3 <= str-sizeof(int)) || (str3 >= &str[10])) &&
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223 ((str3 <= str2-sizeof(int)) || (str3 >= &str2[10])) &&
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224 ((str+10 <= str2) || (str2+10 <= str)),
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225 "Objects don't overlap" );
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226
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227 // Test 8
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228
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229 free(i);
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230 i=(int *)malloc(sizeof(int)*2);
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231 str3=(char *)i;
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232
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233 CYG_TEST_PASS_FAIL( ((str3 <= str-sizeof(int)) || (str3 >= &str[10])) &&
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234 ((str3 <= str2-sizeof(int)) || (str3 >= &str2[10])) &&
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235 ((&str[10] <= str2) || (&str2[10] <= str)),
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236 "Objects don't overlap when middle is freed" );
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237
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238 free(i);
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239 free(str);
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240 free(str2);
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241
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242 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
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243 "malloc(), calloc() and free() functions");
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244 } // main()
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245
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246 #endif // ifndef NA_MSG
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247
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248 // EOF malloc1.c