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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/xmalloc_8c_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 11 Jun 2010 15:24:34 +0100
changeset 9 59758314f811
parent 6 43e37759235e
permissions -rw-r--r--
Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/PIPS/antiword/src/xmalloc.c Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/PIPS/antiword/src/xmalloc.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * xmalloc.c</span>
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<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1998-2005 A.J. van Os</span>
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<a name="l00004"></a>00004 <span class="comment"> *</span>
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<a name="l00005"></a>00005 <span class="comment"> * Description:</span>
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<a name="l00006"></a>00006 <span class="comment"> * Extended malloc and friends</span>
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<a name="l00007"></a>00007 <span class="comment"> */</span>
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<a name="l00008"></a>00008
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<a name="l00009"></a>00009 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
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<a name="l00010"></a>00010 <span class="preprocessor">#include &lt;string.h&gt;</span>
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<a name="l00011"></a>00011 <span class="preprocessor">#include &quot;antiword.h&quot;</span>
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<a name="l00012"></a>00012
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<a name="l00013"></a>00013 <span class="keyword">static</span> <span class="keywordtype">char</span> *szMessage =
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<a name="l00014"></a>00014         <span class="stringliteral">&quot;Memory allocation failed, unable to continue&quot;</span>;
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<a name="l00015"></a>00015 <span class="preprocessor">#if defined(__dos) &amp;&amp; !defined(__DJGPP__)</span>
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<a name="l00016"></a>00016 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">char</span> *szDosMessage =
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<a name="l00017"></a>00017         <span class="stringliteral">&quot;DOS can&#39;t allocate this kind of memory, unable to continue&quot;</span>;
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<a name="l00018"></a>00018 <span class="preprocessor">#endif </span><span class="comment">/* __dos &amp;&amp; !__DJGPP__ */</span>
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<a name="l00019"></a>00019
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<a name="l00020"></a>00020
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<a name="l00021"></a>00021 <span class="comment">/*</span>
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<a name="l00022"></a>00022 <span class="comment"> * xmalloc - Allocates dynamic memory</span>
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<a name="l00023"></a>00023 <span class="comment"> *</span>
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<a name="l00024"></a>00024 <span class="comment"> * See malloc(3), but unlike malloc(3) xmalloc does not return in case</span>
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<a name="l00025"></a>00025 <span class="comment"> * of error.</span>
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<a name="l00026"></a>00026 <span class="comment"> */</span>
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<a name="l00027"></a>00027 <span class="keywordtype">void</span> *
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<a name="l00028"></a>00028 xmalloc(<span class="keywordtype">size_t</span> tSize)
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<a name="l00029"></a>00029 {
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<a name="l00030"></a>00030         <span class="keywordtype">void</span>    *pvTmp;
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032         TRACE_MSG(<span class="stringliteral">&quot;xmalloc&quot;</span>);
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<a name="l00033"></a>00033
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<a name="l00034"></a>00034         <span class="keywordflow">if</span> (tSize == 0) {
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<a name="l00035"></a>00035                 tSize = 1;
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<a name="l00036"></a>00036         }
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<a name="l00037"></a>00037         pvTmp = malloc(tSize);
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<a name="l00038"></a>00038         <span class="keywordflow">if</span> (pvTmp == NULL) {
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<a name="l00039"></a>00039                 DBG_MSG(<span class="stringliteral">&quot;xmalloc returned NULL&quot;</span>);
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<a name="l00040"></a>00040                 DBG_DEC(tSize);
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<a name="l00041"></a>00041                 werr(1, szMessage);
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<a name="l00042"></a>00042         }
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<a name="l00043"></a>00043         <span class="keywordflow">return</span> pvTmp;
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<a name="l00044"></a>00044 } <span class="comment">/* end of xmalloc */</span>
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<a name="l00045"></a>00045
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<a name="l00046"></a>00046 <span class="comment">/*</span>
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<a name="l00047"></a>00047 <span class="comment"> * xcalloc - Allocates and zeros dynamic memory</span>
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<a name="l00048"></a>00048 <span class="comment"> *</span>
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<a name="l00049"></a>00049 <span class="comment"> * See calloc(3), but unlike calloc(3) xcalloc does not return in case of error</span>
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<a name="l00050"></a>00050 <span class="comment"> */</span>
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<a name="l00051"></a>00051 <span class="keywordtype">void</span> *
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<a name="l00052"></a>00052 xcalloc(<span class="keywordtype">size_t</span> tNmemb, <span class="keywordtype">size_t</span> tSize)
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<a name="l00053"></a>00053 {
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<a name="l00054"></a>00054         <span class="keywordtype">void</span>    *pvTmp;
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<a name="l00055"></a>00055
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<a name="l00056"></a>00056         TRACE_MSG(<span class="stringliteral">&quot;xcalloc&quot;</span>);
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<a name="l00057"></a>00057
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<a name="l00058"></a>00058 <span class="preprocessor">#if defined(__dos) &amp;&amp; !defined(__DJGPP__)</span>
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<a name="l00059"></a>00059 <span class="preprocessor"></span>        <span class="keywordflow">if</span> ((ULONG)tNmemb * (ULONG)tSize &gt; 0xffffUL) {
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<a name="l00060"></a>00060                 DBG_DEC((ULONG)tNmemb * (ULONG)tSize);
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<a name="l00061"></a>00061                 werr(1, szDosMessage);
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<a name="l00062"></a>00062         }
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<a name="l00063"></a>00063 <span class="preprocessor">#endif </span><span class="comment">/* __dos &amp;&amp; !__DJGPP__ */</span>
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<a name="l00064"></a>00064
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<a name="l00065"></a>00065         <span class="keywordflow">if</span> (tNmemb == 0 || tSize == 0) {
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<a name="l00066"></a>00066                 tNmemb = 1;
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<a name="l00067"></a>00067                 tSize = 1;
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<a name="l00068"></a>00068         }
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<a name="l00069"></a>00069         pvTmp = calloc(tNmemb, tSize);
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<a name="l00070"></a>00070         <span class="keywordflow">if</span> (pvTmp == NULL) {
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<a name="l00071"></a>00071                 DBG_MSG(<span class="stringliteral">&quot;xcalloc returned NULL&quot;</span>);
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<a name="l00072"></a>00072                 werr(1, szMessage);
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<a name="l00073"></a>00073         }
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<a name="l00074"></a>00074         <span class="keywordflow">return</span> pvTmp;
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<a name="l00075"></a>00075 } <span class="comment">/* end of xcalloc */</span>
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<a name="l00076"></a>00076
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<a name="l00077"></a>00077 <span class="comment">/*</span>
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<a name="l00078"></a>00078 <span class="comment"> * xrealloc - Changes the size of a memory object</span>
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<a name="l00079"></a>00079 <span class="comment"> *</span>
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<a name="l00080"></a>00080 <span class="comment"> * See realloc(3), but unlike realloc(3) xrealloc does not return in case</span>
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<a name="l00081"></a>00081 <span class="comment"> * of error.</span>
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<a name="l00082"></a>00082 <span class="comment"> */</span>
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<a name="l00083"></a>00083 <span class="keywordtype">void</span> *
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<a name="l00084"></a>00084 xrealloc(<span class="keywordtype">void</span> *pvArg, <span class="keywordtype">size_t</span> tSize)
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<a name="l00085"></a>00085 {
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<a name="l00086"></a>00086         <span class="keywordtype">void</span>    *pvTmp;
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<a name="l00087"></a>00087
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<a name="l00088"></a>00088         TRACE_MSG(<span class="stringliteral">&quot;xrealloc&quot;</span>);
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<a name="l00089"></a>00089
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<a name="l00090"></a>00090         pvTmp = realloc(pvArg, tSize);
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<a name="l00091"></a>00091         <span class="keywordflow">if</span> (pvTmp == NULL) {
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<a name="l00092"></a>00092                 DBG_MSG(<span class="stringliteral">&quot;realloc returned NULL&quot;</span>);
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<a name="l00093"></a>00093                 werr(1, szMessage);
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<a name="l00094"></a>00094         }
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<a name="l00095"></a>00095         <span class="keywordflow">return</span> pvTmp;
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<a name="l00096"></a>00096 } <span class="comment">/* end of xrealloc */</span>
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<a name="l00097"></a>00097
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<a name="l00098"></a>00098 <span class="comment">/*</span>
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<a name="l00099"></a>00099 <span class="comment"> * xstrdup - Duplicate a string</span>
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<a name="l00100"></a>00100 <span class="comment"> *</span>
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<a name="l00101"></a>00101 <span class="comment"> * See strdup(3), but unlike strdup(3) xstrdup does not return in case</span>
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<a name="l00102"></a>00102 <span class="comment"> * of error.</span>
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<a name="l00103"></a>00103 <span class="comment"> *</span>
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<a name="l00104"></a>00104 <span class="comment"> * NOTE:</span>
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<a name="l00105"></a>00105 <span class="comment"> * Does not use strdup(3), because some systems don&#39;t have it.</span>
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<a name="l00106"></a>00106 <span class="comment"> */</span>
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<a name="l00107"></a>00107 <span class="keywordtype">char</span> *
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<a name="l00108"></a>00108 xstrdup(<span class="keyword">const</span> <span class="keywordtype">char</span> *szArg)
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<a name="l00109"></a>00109 {
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<a name="l00110"></a>00110         <span class="keywordtype">char</span>    *szTmp;
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<a name="l00111"></a>00111
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<a name="l00112"></a>00112         TRACE_MSG(<span class="stringliteral">&quot;xstrdup&quot;</span>);
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<a name="l00113"></a>00113
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<a name="l00114"></a>00114         szTmp = xmalloc(strlen(szArg) + 1);
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<a name="l00115"></a>00115         strcpy(szTmp, szArg);
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<a name="l00116"></a>00116         <span class="keywordflow">return</span> szTmp;
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<a name="l00117"></a>00117 } <span class="comment">/* end of xstrdup */</span>
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<a name="l00118"></a>00118
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<a name="l00119"></a>00119 <span class="comment">/*</span>
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<a name="l00120"></a>00120 <span class="comment"> * xfree - Deallocates dynamic memory</span>
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<a name="l00121"></a>00121 <span class="comment"> *</span>
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<a name="l00122"></a>00122 <span class="comment"> * See free(3).</span>
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<a name="l00123"></a>00123 <span class="comment"> *</span>
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<a name="l00124"></a>00124 <span class="comment"> * returns NULL;</span>
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<a name="l00125"></a>00125 <span class="comment"> * This makes p=xfree(p) possible, free memory and overwrite the pointer to it.</span>
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<a name="l00126"></a>00126 <span class="comment"> */</span>
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<a name="l00127"></a>00127 <span class="keywordtype">void</span> *
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<a name="l00128"></a>00128 xfree(<span class="keywordtype">void</span> *pvArg)
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<a name="l00129"></a>00129 {
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<a name="l00130"></a>00130         TRACE_MSG(<span class="stringliteral">&quot;xfree&quot;</span>);
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<a name="l00131"></a>00131
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<a name="l00132"></a>00132         <span class="keywordflow">if</span> (pvArg != NULL) {
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<a name="l00133"></a>00133                 free(pvArg);
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<a name="l00134"></a>00134         }
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<a name="l00135"></a>00135         <span class="keywordflow">return</span> NULL;
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<a name="l00136"></a>00136 } <span class="comment">/* end of xfree */</span>
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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