1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 | /* ***** BEGIN LICENSE BLOCK *****
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3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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4 | *
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5 | * The contents of this file are subject to the Mozilla Public License Version
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6 | * 1.1 (the "License"); you may not use this file except in compliance with
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7 | * the License. You may obtain a copy of the License at
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8 | * http://www.mozilla.org/MPL/
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9 | *
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10 | * Software distributed under the License is distributed on an "AS IS" basis,
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11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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12 | * for the specific language governing rights and limitations under the
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13 | * License.
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14 | *
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15 | * The Original Code is mozilla.org code.
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16 | *
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17 | * The Initial Developer of the Original Code is
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18 | * Netscape Communications Corporation.
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19 | * Portions created by the Initial Developer are Copyright (C) 1998
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20 | * the Initial Developer. All Rights Reserved.
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21 | *
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22 | * Contributor(s):
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23 | * Pierre Phaneuf <pp@ludusdesign.com>
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24 | *
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25 | * Alternatively, the contents of this file may be used under the terms of
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26 | * either of the GNU General Public License Version 2 or later (the "GPL"),
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27 | * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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28 | * in which case the provisions of the GPL or the LGPL are applicable instead
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29 | * of those above. If you wish to allow use of your version of this file only
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30 | * under the terms of either the GPL or the LGPL, and not to allow others to
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31 | * use your version of this file under the terms of the MPL, indicate your
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32 | * decision by deleting the provisions above and replace them with the notice
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33 | * and other provisions required by the GPL or the LGPL. If you do not delete
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34 | * the provisions above, a recipient may use your version of this file under
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35 | * the terms of any one of the MPL, the GPL or the LGPL.
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36 | *
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37 | * ***** END LICENSE BLOCK ***** */
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38 |
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39 | #include <assert.h>
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40 | #include <stdio.h>
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41 | #include "nsCOMPtr.h"
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42 | #include "nsISupports.h"
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43 |
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44 | #ifdef HAVE_CPP_NEW_CASTS
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45 | #define STATIC_CAST(T,x) static_cast<T>(x)
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46 | #define REINTERPRET_CAST(T,x) reinterpret_cast<T>(x)
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47 | #else
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48 | #define STATIC_CAST(T,x) ((T)(x))
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49 | #define REINTERPRET_CAST(T,x) ((T)(x))
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50 | #endif
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51 |
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52 |
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53 | #define NS_IFOO_IID \
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54 | { 0x6f7652e0, 0xee43, 0x11d1, \
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55 | { 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
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56 |
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57 | class IFoo : public nsISupports
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58 | {
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59 | public:
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60 | NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFOO_IID)
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61 |
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62 | public:
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63 | IFoo();
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64 | // virtual dtor because IBar uses our Release()
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65 | virtual ~IFoo();
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66 |
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67 | NS_IMETHOD_(nsrefcnt) AddRef();
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68 | NS_IMETHOD_(nsrefcnt) Release();
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69 | NS_IMETHOD QueryInterface( const nsIID&, void** );
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70 |
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71 | static void print_totals();
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72 |
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73 | private:
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74 | unsigned int refcount_;
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75 |
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76 | static unsigned int total_constructions_;
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77 | static unsigned int total_destructions_;
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78 | };
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79 |
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80 | class IBar;
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81 |
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82 | // some types I'll need
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83 | typedef unsigned long NS_RESULT;
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84 |
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85 | // some functions I'll need (and define below)
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86 | nsresult CreateIFoo( void** );
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87 | nsresult CreateIBar( void** result );
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88 | void AnIFooPtrPtrContext( IFoo** );
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89 | void AnISupportsPtrPtrContext( nsISupports** );
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90 | void AVoidPtrPtrContext( void** );
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91 | void set_a_IFoo( nsCOMPtr<IFoo>* result );
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92 | nsCOMPtr<IFoo> return_a_IFoo();
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93 |
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94 |
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95 |
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96 |
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97 | unsigned int IFoo::total_constructions_;
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98 | unsigned int IFoo::total_destructions_;
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99 |
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100 | class test_message
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101 | {
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102 | public:
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103 | test_message()
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104 | {
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105 | printf("BEGIN unit tests for |nsCOMPtr|, compiled " __DATE__ "\n");
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106 | }
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107 |
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108 | ~test_message()
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109 | {
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110 | IFoo::print_totals();
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111 | printf("END unit tests for |nsCOMPtr|.\n");
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112 | }
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113 | };
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114 |
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115 | test_message gTestMessage;
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116 |
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117 |
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118 | /*
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119 | ...
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120 | */
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121 |
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122 | void
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123 | IFoo::print_totals()
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124 | {
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125 | printf("total constructions/destructions --> %d/%d\n",
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126 | total_constructions_, total_destructions_);
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127 | }
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128 |
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129 | IFoo::IFoo()
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130 | : refcount_(0)
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131 | {
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132 | ++total_constructions_;
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133 | printf(" new IFoo@%p [#%d]\n",
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134 | STATIC_CAST(void*, this), total_constructions_);
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135 | }
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136 |
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137 | IFoo::~IFoo()
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138 | {
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139 | ++total_destructions_;
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140 | printf("IFoo@%p::~IFoo() [#%d]\n",
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141 | STATIC_CAST(void*, this), total_destructions_);
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142 | }
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143 |
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144 | nsrefcnt
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145 | IFoo::AddRef()
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146 | {
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147 | ++refcount_;
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148 | printf("IFoo@%p::AddRef(), refcount --> %d\n",
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149 | STATIC_CAST(void*, this), refcount_);
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150 | return refcount_;
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151 | }
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152 |
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153 | nsrefcnt
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154 | IFoo::Release()
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155 | {
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156 | int wrap_message = (refcount_ == 1);
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157 | if ( wrap_message )
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158 | printf(">>");
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159 |
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160 | --refcount_;
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161 | printf("IFoo@%p::Release(), refcount --> %d\n",
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162 | STATIC_CAST(void*, this), refcount_);
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163 |
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164 | if ( !refcount_ )
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165 | {
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166 | printf(" delete IFoo@%p\n", STATIC_CAST(void*, this));
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167 | delete this;
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168 | }
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169 |
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170 | if ( wrap_message )
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171 | printf("<<IFoo@%p::Release()\n", STATIC_CAST(void*, this));
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172 |
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173 | return refcount_;
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174 | }
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175 |
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176 | nsresult
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177 | IFoo::QueryInterface( const nsIID& aIID, void** aResult )
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178 | {
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179 | printf("IFoo@%p::QueryInterface()\n", STATIC_CAST(void*, this));
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180 | nsISupports* rawPtr = 0;
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181 | nsresult status = NS_OK;
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182 |
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183 | if ( aIID.Equals(GetIID()) )
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184 | rawPtr = this;
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185 | else
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186 | {
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187 | nsID iid_of_ISupports = NS_ISUPPORTS_IID;
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188 | if ( aIID.Equals(iid_of_ISupports) )
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189 | rawPtr = STATIC_CAST(nsISupports*, this);
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190 | else
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191 | status = NS_ERROR_NO_INTERFACE;
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192 | }
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193 |
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194 | NS_IF_ADDREF(rawPtr);
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195 | *aResult = rawPtr;
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196 |
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197 | return status;
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198 | }
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199 |
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200 | nsresult
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201 | CreateIFoo( void** result )
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202 | // a typical factory function (that calls AddRef)
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203 | {
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204 | printf(">>CreateIFoo() --> ");
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205 | IFoo* foop = new IFoo;
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206 | printf("IFoo@%p\n", STATIC_CAST(void*, foop));
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207 |
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208 | foop->AddRef();
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209 | *result = foop;
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210 |
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211 | printf("<<CreateIFoo()\n");
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212 | return 0;
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213 | }
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214 |
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215 | void
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216 | set_a_IFoo( nsCOMPtr<IFoo>* result )
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217 | {
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218 | printf(">>set_a_IFoo()\n");
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219 | assert(result);
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220 |
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221 | nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
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222 | *result = foop;
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223 | printf("<<set_a_IFoo()\n");
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224 | }
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225 |
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226 | nsCOMPtr<IFoo>
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227 | return_a_IFoo()
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228 | {
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229 | printf(">>return_a_IFoo()\n");
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230 | nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
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231 | printf("<<return_a_IFoo()\n");
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232 | return foop;
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233 | }
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234 |
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235 |
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236 |
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237 |
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238 | #define NS_IBAR_IID \
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239 | { 0x6f7652e1, 0xee43, 0x11d1, \
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240 | { 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
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241 |
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242 | class IBar : public IFoo
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243 | {
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244 | public:
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245 | NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBAR_IID)
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246 |
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247 | public:
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248 | IBar();
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249 | virtual ~IBar();
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250 |
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251 | NS_IMETHOD QueryInterface( const nsIID&, void** );
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252 | };
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253 |
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254 | IBar::IBar()
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255 | {
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256 | printf(" new IBar@%p\n", STATIC_CAST(void*, this));
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257 | }
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258 |
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259 | IBar::~IBar()
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260 | {
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261 | printf("IBar@%p::~IBar()\n", STATIC_CAST(void*, this));
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262 | }
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263 |
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264 | nsresult
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265 | IBar::QueryInterface( const nsID& aIID, void** aResult )
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266 | {
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267 | printf("IBar@%p::QueryInterface()\n", STATIC_CAST(void*, this));
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268 | nsISupports* rawPtr = 0;
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269 | nsresult status = NS_OK;
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270 |
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271 | if ( aIID.Equals(GetIID()) )
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272 | rawPtr = this;
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273 | else if ( aIID.Equals(NS_GET_IID(IFoo)) )
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274 | rawPtr = STATIC_CAST(IFoo*, this);
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275 | else
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276 | {
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277 | nsID iid_of_ISupports = NS_ISUPPORTS_IID;
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278 | if ( aIID.Equals(iid_of_ISupports) )
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279 | rawPtr = STATIC_CAST(nsISupports*, this);
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280 | else
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281 | status = NS_ERROR_NO_INTERFACE;
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282 | }
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283 |
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284 | NS_IF_ADDREF(rawPtr);
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285 | *aResult = rawPtr;
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286 |
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287 | return status;
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288 | }
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289 |
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290 |
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291 |
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292 | nsresult
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293 | CreateIBar( void** result )
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294 | // a typical factory function (that calls AddRef)
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295 | {
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296 | printf(">>CreateIBar() --> ");
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297 | IBar* barp = new IBar;
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298 | printf("IBar@%p\n", STATIC_CAST(void*, barp));
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299 |
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300 | barp->AddRef();
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301 | *result = barp;
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302 |
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303 | printf("<<CreateIBar()\n");
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304 | return 0;
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305 | }
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306 |
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307 | void
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308 | AnIFooPtrPtrContext( IFoo** )
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309 | {
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310 | }
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311 |
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312 | void
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313 | AVoidPtrPtrContext( void** )
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314 | {
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315 | }
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316 |
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317 | void
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318 | AnISupportsPtrPtrContext( nsISupports** )
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319 | {
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320 | }
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321 |
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322 |
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323 | // Optimism
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324 | #define TEST_EXCEPTIONS 1
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325 |
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326 | // HAVE_CPP_EXCEPTIONS is defined automagically on unix
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327 | #if defined(XP_UNIX) || defined(XP_BEOS) || defined(XP_OS2)
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328 | #if !defined(HAVE_CPP_EXCEPTIONS)
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329 | #undef TEST_EXCEPTIONS
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330 | #endif
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331 | #endif
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332 |
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333 | #ifdef TEST_EXCEPTIONS
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334 | static
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335 | nsresult
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336 | TestBloat_Raw()
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337 | {
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338 | IBar* barP = 0;
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339 | nsresult result = CreateIBar(REINTERPRET_CAST(void**, &barP));
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340 |
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341 | if ( barP )
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342 | {
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343 | try
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344 | {
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345 | IFoo* fooP = 0;
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346 | if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), REINTERPRET_CAST(void**, &fooP)) ) )
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347 | {
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348 | try
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349 | {
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350 | fooP->print_totals();
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351 | }
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352 | catch( ... )
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353 | {
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354 | NS_RELEASE(fooP);
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355 | throw;
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356 | }
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357 |
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358 | NS_RELEASE(fooP);
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359 | }
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360 | }
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361 | catch( ... )
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362 | {
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363 | NS_RELEASE(barP);
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364 | throw;
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365 | }
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366 |
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367 | NS_RELEASE(barP);
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368 | }
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369 |
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370 | return result;
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371 | }
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372 | #endif // TEST_EXCEPTIONS
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373 |
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374 | static
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375 | nsresult
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376 | TestBloat_Raw_Unsafe()
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377 | {
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378 | IBar* barP = 0;
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379 | nsresult result = CreateIBar(REINTERPRET_CAST(void**, &barP));
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380 |
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381 | if ( barP )
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382 | {
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383 | IFoo* fooP = 0;
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384 | if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), REINTERPRET_CAST(void**, &fooP)) ) )
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385 | {
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386 | fooP->print_totals();
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387 | NS_RELEASE(fooP);
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388 | }
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389 |
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390 | NS_RELEASE(barP);
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391 | }
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392 |
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393 | return result;
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394 | }
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395 |
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396 |
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397 | static
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398 | nsresult
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399 | TestBloat_Smart()
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400 | {
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401 | nsCOMPtr<IBar> barP;
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402 | nsresult result = CreateIBar( getter_AddRefs(barP) );
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403 |
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404 | nsCOMPtr<IFoo> fooP( do_QueryInterface(barP, &result) );
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405 |
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406 | if ( fooP )
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407 | fooP->print_totals();
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408 |
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409 | return result;
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410 | }
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411 |
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412 |
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413 |
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414 |
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415 | nsCOMPtr<IFoo> gFoop;
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416 |
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417 | int
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418 | main()
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419 | {
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420 | printf(">>main()\n");
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421 |
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422 | printf("sizeof(nsCOMPtr<IFoo>) --> %zd\n", sizeof(nsCOMPtr<IFoo>));
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423 |
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424 | #ifdef TEST_EXCEPTIONS
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425 | TestBloat_Raw();
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426 | #endif // TEST_EXCEPTIONS
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427 | TestBloat_Raw_Unsafe();
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428 | TestBloat_Smart();
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429 |
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430 |
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431 | {
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432 | printf("\n### Test 1: will a |nsCOMPtr| call |AddRef| on a pointer assigned into it?\n");
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433 | nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
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434 |
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435 | printf("\n### Test 2: will a |nsCOMPtr| |Release| its old pointer when a new one is assigned in?\n");
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436 | foop = do_QueryInterface(new IFoo);
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437 |
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438 | // [Shouldn't compile] Is it a compile time error to try to |AddRef| by hand?
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439 | //foop->AddRef();
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440 |
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441 | // [Shouldn't compile] Is it a compile time error to try to |Release| be hand?
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442 | //foop->Release();
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443 |
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444 | // [Shouldn't compile] Is it a compile time error to try to |delete| an |nsCOMPtr|?
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445 | //delete foop;
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446 |
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447 | printf("\n### Test 3: can you |AddRef| if you must?\n");
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448 | STATIC_CAST(IFoo*, foop)->AddRef();
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449 |
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450 | printf("\n### Test 4: can you |Release| if you must?\n");
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451 | STATIC_CAST(IFoo*, foop)->Release();
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452 |
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453 | printf("\n### Test 5: will a |nsCOMPtr| |Release| when it goes out of scope?\n");
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454 | }
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455 |
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456 | {
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457 | printf("\n### Test 6: will a |nsCOMPtr| call the correct destructor?\n");
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458 | nsCOMPtr<IFoo> foop( do_QueryInterface(new IBar) );
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459 | }
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460 |
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461 | {
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462 | printf("\n### Test 7: can you compare one |nsCOMPtr| with another [!=]?\n");
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463 |
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464 | nsCOMPtr<IFoo> foo1p( do_QueryInterface(new IFoo) );
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465 |
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466 | // [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
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467 | //AnIFooPtrPtrContext(&foo1p);
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468 |
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469 | // [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
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470 | //AVoidPtrPtrContext(&foo1p);
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471 |
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472 | nsCOMPtr<IFoo> foo2p( do_QueryInterface(new IFoo) );
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473 |
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474 | if ( foo1p != foo2p )
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475 | printf("foo1p != foo2p\n");
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476 | else
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477 | printf("foo1p == foo2p\n");
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478 |
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479 | printf("\n### Test 7.5: can you compare a |nsCOMPtr| with NULL, 0, nsnull [!=]?\n");
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480 | if ( foo1p != 0 )
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481 | printf("foo1p != 0\n");
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482 | if ( 0 != foo1p )
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483 | printf("0 != foo1p\n");
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484 | if ( foo1p == 0 )
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485 | printf("foo1p == 0\n");
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486 | if ( 0 == foo1p )
|
---|
487 | printf("0 == foo1p\n");
|
---|
488 |
|
---|
489 |
|
---|
490 | IFoo* raw_foo2p = foo2p.get();
|
---|
491 |
|
---|
492 | printf("\n### Test 8: can you compare a |nsCOMPtr| with a raw interface pointer [!=]?\n");
|
---|
493 | if ( foo1p.get() != raw_foo2p )
|
---|
494 | printf("foo1p != raw_foo2p\n");
|
---|
495 | else
|
---|
496 | printf("foo1p == raw_foo2p\n");
|
---|
497 |
|
---|
498 |
|
---|
499 | printf("\n### Test 9: can you assign one |nsCOMPtr| into another?\n");
|
---|
500 | foo1p = foo2p;
|
---|
501 |
|
---|
502 | printf("\n### Test 10: can you compare one |nsCOMPtr| with another [==]?\n");
|
---|
503 | if ( foo1p == foo2p )
|
---|
504 | printf("foo1p == foo2p\n");
|
---|
505 | else
|
---|
506 | printf("foo1p != foo2p\n");
|
---|
507 |
|
---|
508 | printf("\n### Test 11: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n");
|
---|
509 | if ( raw_foo2p == foo2p.get() )
|
---|
510 | printf("raw_foo2p == foo2p\n");
|
---|
511 | else
|
---|
512 | printf("raw_foo2p != foo2p\n");
|
---|
513 |
|
---|
514 | #if 1
|
---|
515 | printf("\n### Test 11.5: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n");
|
---|
516 | if ( nsCOMPtr<IFoo>( raw_foo2p ) == foo2p )
|
---|
517 | printf("raw_foo2p == foo2p\n");
|
---|
518 | else
|
---|
519 | printf("raw_foo2p != foo2p\n");
|
---|
520 | #endif
|
---|
521 |
|
---|
522 | printf("\n### Test 12: bare pointer test?\n");
|
---|
523 | if ( foo1p )
|
---|
524 | printf("foo1p is not NULL\n");
|
---|
525 | else
|
---|
526 | printf("foo1p is NULL\n");
|
---|
527 |
|
---|
528 | printf("\n### Test 13: numeric pointer test?\n");
|
---|
529 | if ( foo1p == 0 )
|
---|
530 | printf("foo1p is NULL\n");
|
---|
531 | else
|
---|
532 | printf("foo1p is not NULL\n");
|
---|
533 |
|
---|
534 | #if 0
|
---|
535 | if ( foo1p == 1 )
|
---|
536 | printf("foo1p allowed compare with in\n");
|
---|
537 | #endif
|
---|
538 |
|
---|
539 | printf("\n### Test 14: how about when two |nsCOMPtr|s referring to the same object go out of scope?\n");
|
---|
540 | }
|
---|
541 |
|
---|
542 | {
|
---|
543 | printf("\n### Test 15,16 ...setup...\n");
|
---|
544 | IFoo* raw_foo1p = new IFoo;
|
---|
545 | raw_foo1p->AddRef();
|
---|
546 |
|
---|
547 | IFoo* raw_foo2p = new IFoo;
|
---|
548 | raw_foo2p->AddRef();
|
---|
549 |
|
---|
550 | printf("\n### Test 15: what if I don't want to |AddRef| when I construct?\n");
|
---|
551 | nsCOMPtr<IFoo> foo1p( dont_AddRef(raw_foo1p) );
|
---|
552 | //nsCOMPtr<IFoo> foo1p = dont_AddRef(raw_foo1p);
|
---|
553 |
|
---|
554 | printf("\n### Test 16: what if I don't want to |AddRef| when I assign in?\n");
|
---|
555 | nsCOMPtr<IFoo> foo2p;
|
---|
556 | foo2p = dont_AddRef(raw_foo2p);
|
---|
557 | }
|
---|
558 |
|
---|
559 |
|
---|
560 |
|
---|
561 |
|
---|
562 |
|
---|
563 |
|
---|
564 |
|
---|
565 | {
|
---|
566 | printf("\n### setup for Test 17\n");
|
---|
567 | nsCOMPtr<IFoo> foop;
|
---|
568 | printf("### Test 17: basic parameter behavior?\n");
|
---|
569 | CreateIFoo( nsGetterAddRefs<IFoo>(foop) );
|
---|
570 | }
|
---|
571 | printf("### End Test 17\n");
|
---|
572 |
|
---|
573 |
|
---|
574 | {
|
---|
575 | printf("\n### setup for Test 18\n");
|
---|
576 | nsCOMPtr<IFoo> foop;
|
---|
577 | printf("### Test 18: basic parameter behavior, using the short form?\n");
|
---|
578 | CreateIFoo( getter_AddRefs(foop) );
|
---|
579 | }
|
---|
580 | printf("### End Test 18\n");
|
---|
581 |
|
---|
582 |
|
---|
583 | {
|
---|
584 | printf("\n### setup for Test 19, 20\n");
|
---|
585 | nsCOMPtr<IFoo> foop;
|
---|
586 | printf("### Test 19: reference parameter behavior?\n");
|
---|
587 | set_a_IFoo(address_of(foop));
|
---|
588 |
|
---|
589 | printf("### Test 20: return value behavior?\n");
|
---|
590 | foop = return_a_IFoo();
|
---|
591 | }
|
---|
592 | printf("### End Test 19, 20\n");
|
---|
593 |
|
---|
594 | {
|
---|
595 | printf("\n### setup for Test 21\n");
|
---|
596 | nsCOMPtr<IFoo> fooP;
|
---|
597 |
|
---|
598 | printf("### Test 21: is |QueryInterface| called on assigning in a raw pointer?\n");
|
---|
599 | fooP = do_QueryInterface(new IFoo);
|
---|
600 | }
|
---|
601 | printf("### End Test 21\n");
|
---|
602 |
|
---|
603 | {
|
---|
604 | printf("\n### setup for Test 22\n");
|
---|
605 | nsCOMPtr<IFoo> fooP;
|
---|
606 | fooP = do_QueryInterface(new IFoo);
|
---|
607 |
|
---|
608 | nsCOMPtr<IFoo> foo2P;
|
---|
609 |
|
---|
610 | printf("### Test 22: is |QueryInterface| _not_ called when assigning in a smart-pointer of the same type?\n");
|
---|
611 | foo2P = fooP;
|
---|
612 | }
|
---|
613 | printf("### End Test 22\n");
|
---|
614 |
|
---|
615 | {
|
---|
616 | printf("\n### setup for Test 23\n");
|
---|
617 | nsCOMPtr<IBar> barP( do_QueryInterface(new IBar) );
|
---|
618 |
|
---|
619 | printf("### Test 23: is |QueryInterface| called when assigning in a smart-pointer of a different type?\n");
|
---|
620 |
|
---|
621 | nsCOMPtr<IFoo> fooP( do_QueryInterface(barP) );
|
---|
622 | if ( fooP )
|
---|
623 | printf("an IBar* is an IFoo*\n");
|
---|
624 | }
|
---|
625 | printf("### End Test 23\n");
|
---|
626 |
|
---|
627 |
|
---|
628 | {
|
---|
629 | nsCOMPtr<IFoo> fooP;
|
---|
630 |
|
---|
631 | AnIFooPtrPtrContext( getter_AddRefs(fooP) );
|
---|
632 | AVoidPtrPtrContext( getter_AddRefs(fooP) );
|
---|
633 | AnISupportsPtrPtrContext( getter_AddRefs(fooP) );
|
---|
634 | }
|
---|
635 |
|
---|
636 |
|
---|
637 | {
|
---|
638 | nsCOMPtr<nsISupports> supportsP;
|
---|
639 |
|
---|
640 | AVoidPtrPtrContext( getter_AddRefs(supportsP) );
|
---|
641 | AnISupportsPtrPtrContext( getter_AddRefs(supportsP) );
|
---|
642 | }
|
---|
643 |
|
---|
644 |
|
---|
645 | printf("\n### Test 24: will a static |nsCOMPtr| |Release| before program termination?\n");
|
---|
646 | gFoop = do_QueryInterface(new IFoo);
|
---|
647 |
|
---|
648 | printf("<<main()\n");
|
---|
649 | return 0;
|
---|
650 | }
|
---|
651 |
|
---|