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IRC Backend: fix compilation with libCommuni > 2.0.0
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<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">curl_global_init_mem - Global libcurl initialisation with memory callbacks <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0"><span Class="bold">#include &lt;curl/curl.h&gt;</span> 
<p class="level0"><span Class="bold">CURLcode curl_global_init_mem(long  flags,</span> <span Class="bold"> curl_malloc_callback m,</span> <span Class="bold"> curl_free_callback f,</span> <span Class="bold"> curl_realloc_callback r,</span> <span Class="bold"> curl_strdup_callback s,</span> <span Class="bold"> curl_calloc_callback c );</span> <a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0">This function works exactly as <a class="emphasis" href="./curl_global_init.html">curl_global_init(3)</a> with one addition: it allows the application to set callbacks to replace the otherwise used internal memory functions. 
<p class="level0">This man page only adds documentation for the callbacks, see the <a class="emphasis" href="./curl_global_init.html">curl_global_init(3)</a> man page for all the rest. When you use this function, all callback arguments must be set to valid function pointers. 
<p class="level0">The prototypes for the given callbacks should match these: 
<p class="level0"><a name="void"></a><span class="nroffip">void *malloc_callback(size_t size);</span> 
<p class="level1">To replace malloc() 
<p class="level0"><a name="void"></a><span class="nroffip">void free_callback(void *ptr);</span> 
<p class="level1">To replace free() 
<p class="level0"><a name="void"></a><span class="nroffip">void *realloc_callback(void *ptr, size_t size);</span> 
<p class="level1">To replace realloc() 
<p class="level0"><a name="char"></a><span class="nroffip">char *strdup_callback(const char *str);</span> 
<p class="level1">To replace strdup() 
<p class="level0"><a name="void"></a><span class="nroffip">void *calloc_callback(size_t nmemb, size_t size);</span> 
<p class="level1">To replace calloc() <a name="CAUTION"></a><h2 class="nroffsh">CAUTION</h2>
<p class="level0">Manipulating these gives considerable powers to the application to severly screw things up for libcurl. Take care! <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a class="manpage" href="./curl_global_init.html">curl_global_init (3)</a> <span Class="manpage"> </span> <a class="manpage" href="./curl_global_cleanup.html">curl_global_cleanup (3)</a> <span Class="manpage"> </span> 
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