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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">operator</span> new<span style="font-size:0.7em; line-height:130%">, operator</span> new[]</h1>
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/bitset.html" title="cpp/utility/bitset"><span class="t-lines"><span>bitset</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/hash.html" title="cpp/utility/hash"><span class="t-lines"><span>hash</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Relational operators</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/rel_ops/operator_cmp.html" title="cpp/utility/rel ops/operator cmp"><span class="t-lines"><span>rel_ops::operator!=</span><span>rel_ops::operator></span><span>rel_ops::operator<=</span><span>rel_ops::operator>=</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Pairs and tuples</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/pair.html" title="cpp/utility/pair"><span class="t-lines"><span>pair</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/tuple.html" title="cpp/utility/tuple"><span class="t-lines"><span>tuple</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/piecewise_construct_t.html" title="cpp/utility/piecewise construct t"><span class="t-lines"><span>piecewise_construct_t</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/piecewise_construct.html" title="cpp/utility/piecewise construct"><span class="t-lines"><span>piecewise_construct</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/integer_sequence.html" title="cpp/utility/integer sequence"><span class="t-lines"><span>integer_sequence</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Swap, forward and move</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../algorithm/swap.html" title="cpp/algorithm/swap"><span class="t-lines"><span>swap</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/exchange.html" title="cpp/utility/exchange"><span class="t-lines"><span>exchange</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/forward.html" title="cpp/utility/forward"><span class="t-lines"><span>forward</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/move.html" title="cpp/utility/move"><span class="t-lines"><span>move</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/move_if_noexcept.html" title="cpp/utility/move if noexcept"><span class="t-lines"><span>move_if_noexcept</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Type operations</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/declval.html" title="cpp/utility/declval"><span class="t-lines"><span>declval</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/as_const.html" title="cpp/utility/as const"><span class="t-lines"><span>as_const</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../memory.html" title="cpp/memory"> Dynamic memory management</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h1"><td colspan="5"> Smart pointers</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../unique_ptr.html" title="cpp/memory/unique ptr"><span class="t-lines"><span>unique_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../shared_ptr.html" title="cpp/memory/shared ptr"><span class="t-lines"><span>shared_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../weak_ptr.html" title="cpp/memory/weak ptr"><span class="t-lines"><span>weak_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../auto_ptr.html" title="cpp/memory/auto ptr"><span class="t-lines"><span>auto_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../owner_less.html" title="cpp/memory/owner less"><span class="t-lines"><span>owner_less</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../enable_shared_from_this.html" title="cpp/memory/enable shared from this"><span class="t-lines"><span>enable_shared_from_this</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../bad_weak_ptr.html" title="cpp/memory/bad weak ptr"><span class="t-lines"><span>bad_weak_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../default_delete.html" title="cpp/memory/default delete"><span class="t-lines"><span>default_delete</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Allocators</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../allocator.html" title="cpp/memory/allocator"><span class="t-lines"><span>allocator</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../allocator_traits.html" title="cpp/memory/allocator traits"><span class="t-lines"><span>allocator_traits</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../allocator_arg_t.html" title="cpp/memory/allocator arg t"><span class="t-lines"><span>allocator_arg_t</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../allocator_arg.html" title="cpp/memory/allocator arg"><span class="t-lines"><span>allocator_arg</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../uses_allocator.html" title="cpp/memory/uses allocator"><span class="t-lines"><span>uses_allocator</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../scoped_allocator_adaptor.html" title="cpp/memory/scoped allocator adaptor"><span class="t-lines"><span>scoped_allocator_adaptor</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Uninitialized storage</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../uninitialized_copy.html" title="cpp/memory/uninitialized copy"><span class="t-lines"><span>uninitialized_copy</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../uninitialized_copy_n.html" title="cpp/memory/uninitialized copy n"><span class="t-lines"><span>uninitialized_copy_n</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../uninitialized_fill.html" title="cpp/memory/uninitialized fill"><span class="t-lines"><span>uninitialized_fill</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../uninitialized_fill_n.html" title="cpp/memory/uninitialized fill n"><span class="t-lines"><span>uninitialized_fill_n</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../raw_storage_iterator.html" title="cpp/memory/raw storage iterator"><span class="t-lines"><span>raw_storage_iterator</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../get_temporary_buffer.html" title="cpp/memory/get temporary buffer"><span class="t-lines"><span>get_temporary_buffer</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../return_temporary_buffer.html" title="cpp/memory/return temporary buffer"><span class="t-lines"><span>return_temporary_buffer</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Garbage collection support</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../gc/declare_reachable.html" title="cpp/memory/gc/declare reachable"><span class="t-lines"><span>declare_reachable</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../gc/undeclare_reachable.html" title="cpp/memory/gc/undeclare reachable"><span class="t-lines"><span>undeclare_reachable</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../gc/declare_no_pointers.html" title="cpp/memory/gc/declare no pointers"><span class="t-lines"><span>declare_no_pointers</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../gc/undeclare_no_pointers.html" title="cpp/memory/gc/undeclare no pointers"><span class="t-lines"><span>undeclare_no_pointers</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../gc/pointer_safety.html" title="cpp/memory/gc/pointer safety"><span class="t-lines"><span>pointer_safety</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../gc/get_pointer_safety.html" title="cpp/memory/gc/get pointer safety"><span class="t-lines"><span>get_pointer_safety</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Miscellaneous</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../pointer_traits.html" title="cpp/memory/pointer traits"><span class="t-lines"><span>pointer_traits</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../addressof.html" title="cpp/memory/addressof"><span class="t-lines"><span>addressof</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../align.html" title="cpp/memory/align"><span class="t-lines"><span>align</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> <a href="../c.html" title="cpp/memory/c">C Library</a></td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../c/malloc.html" title="cpp/memory/c/malloc"><span class="t-lines"><span>malloc</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../c/calloc.html" title="cpp/memory/c/calloc"><span class="t-lines"><span>calloc</span></span></a></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../c/realloc.html" title="cpp/memory/c/realloc"><span class="t-lines"><span>realloc</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../c/free.html" title="cpp/memory/c/free"><span class="t-lines"><span>free</span></span></a></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> <a href="../new.1.html" title="cpp/memory/new">Low level memory management</a></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/memory/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../new.1.html" title="cpp/memory/new"> Low level memory management</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h1"><td colspan="5"> Functions</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>operator new</span><span>operator new[]</span></span></strong></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_delete.html" title="cpp/memory/new/operator delete"><span class="t-lines"><span>operator delete</span><span>operator delete[]</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="get_new_handler.html" title="cpp/memory/new/get new handler"><span class="t-lines"><span>get_new_handler</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="set_new_handler.html" title="cpp/memory/new/set new handler"><span class="t-lines"><span>set_new_handler</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Classes</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="bad_alloc.html" title="cpp/memory/new/bad alloc"><span class="t-lines"><span>bad_alloc</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="bad_array_new_length.html" title="cpp/memory/new/bad array new length"><span class="t-lines"><span>bad_array_new_length</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="nothrow_t.html" title="cpp/memory/new/nothrow t"><span class="t-lines"><span>nothrow_t</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Types</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="new_handler.html" title="cpp/memory/new/new handler"><span class="t-lines"><span>new_handler</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Objects</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="nothrow.html" title="cpp/memory/new/nothrow"><span class="t-lines"><span>nothrow</span></span></a></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/memory/new/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div></div>
<table class="t-dcl-begin"><tbody>
<tr class="t-dsc-header">
<td> <div>Defined in header <code><a href="../../header/new.html" title="cpp/header/new"><new></a></code>
</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td> <div>replaceable allocation functions</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new  <span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (1) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (2) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new  <span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, <span class="kw4">const</span> <a href="nothrow_t.html"><span class="kw596">std::<span class="me2">nothrow_t</span></span></a><span class="sy3">&</span> tag<span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (3) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, <span class="kw4">const</span> <a href="nothrow_t.html"><span class="kw596">std::<span class="me2">nothrow_t</span></span></a><span class="sy3">&</span> tag<span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (4) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl-h">
<td> <div>placement allocation functions</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new  <span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, <span class="kw4">void</span><span class="sy2">*</span> ptr <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (5) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, <span class="kw4">void</span><span class="sy2">*</span> ptr <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (6) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new  <span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, user<span class="sy2">-</span>defined<span class="sy2">-</span>args... <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (7) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, user<span class="sy2">-</span>defined<span class="sy2">-</span>args... <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (8) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl-h">
<td> <div>class-specific allocation functions</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> T<span class="sy4">::</span><span class="me2">operator</span> new  <span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (9) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> T<span class="sy4">::</span><span class="me2">operator</span> new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (10) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> T<span class="sy4">::</span><span class="me2">operator</span> new  <span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, user<span class="sy2">-</span>defined<span class="sy2">-</span>args... <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (11) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span><span class="sy2">*</span> T<span class="sy4">::</span><span class="me2">operator</span> new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span> <a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> count, user<span class="sy2">-</span>defined<span class="sy2">-</span>args... <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (12) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<p>Allocates requested number of bytes. These allocation functions are called by <a href="../../language/new.html" title="cpp/language/new">new-expressions</a> to allocate memory in which new object would then be initialized. They may also be called using regular function call syntax.
</p>
<div class="t-li1"><span class="t-li">1)</span> Called by non-array <a href="../../language/new.html" title="cpp/language/new">new-expressions</a> to allocate storage required for a single object. The standard library implementation allocates <code>count</code> bytes from free store. In case of failure, the standard library implementation calls the function pointer returned by <span class="t-lc">std::get_new_handler</span> and repeats allocation attempts until new handler does not return or becomes a null pointer, at which time it throws <span class="t-lc">std::bad_alloc</span>. This function is required to return a pointer suitably aligned to hold an object of any fundamental alignment.</div>
<div class="t-li1"><span class="t-li">2)</span> Called by the array form of <a href="../../language/new.html" title="cpp/language/new">new[]-expressions</a> to allocate all storage required for an array (including possible <i>new-expression</i> overhead). The standard library implementation calls version (1)</div>
<div class="t-li1"><span class="t-li">3)</span> Called by the non-throwing non-array <a href="../../language/new.html" title="cpp/language/new">new-expressions</a> . The standard library implementation calls the version (1) and returns a null pointer on failure instead of propagating the exception.</div>
<div class="t-li1"><span class="t-li">4)</span> Called by the non-throwing array form of <a href="../../language/new.html" title="cpp/language/new">new[]-expressions</a>. The standard library implementation calls the version (2) and returns a null pointer on failure instead of propagating the exception.</div>
<div class="t-li1"><span class="t-li">5)</span> Called by the standard single-object <a href="../../language/new.html" title="cpp/language/new">placement new</a> expression. The standard library implementation performs no action and returns <code>ptr</code> unmodified.</div>
<div class="t-li1"><span class="t-li">6)</span> Called by the standard array form <a href="../../language/new.html" title="cpp/language/new">placement new</a> expression. The standard library implementation performs no action and returns <code>ptr</code> unmodified.</div>
<div class="t-li1"><span class="t-li">7)</span> If defined, called by the custom single-object <a href="../../language/new.html" title="cpp/language/new">placement new</a> expression with the matching signature. If a class-specific version (11) is defined, it is called in preference to (7). If neither (7) nor (11) is provided by the user, the placement new expression is ill-formed.</div>
<div class="t-li1"><span class="t-li">8)</span> If defined, called by the custom array form <a href="../../language/new.html" title="cpp/language/new">placement new</a> expression with the matching signature. If a class-specific version (12) is defined, it is called in preference to (8). If neither (8) nor (12) is provided by the user, the placement new expression is ill-formed.</div>
<div class="t-li1"><span class="t-li">9)</span> If defined, called by the usual single-object <a href="../../language/new.html" title="cpp/language/new">new-expressions</a> if allocating an object of type T.</div>
<div class="t-li1"><span class="t-li">10)</span> If defined, called by the usual array <a href="../../language/new.html" title="cpp/language/new">new[]-expressions</a> if allocating an array of objects of type T.</div>
<div class="t-li1"><span class="t-li">11)</span> If defined, called by the custom single-object <a href="../../language/new.html" title="cpp/language/new">placement new</a> expression with the matching signature if allocating an object of type T.</div>
<div class="t-li1"><span class="t-li">12)</span> If defined, called by the custom array form of <a href="../../language/new.html" title="cpp/language/new">placement new[] </a> expression with the matching signature if allocating an array of objects of type T.</div>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="operator_new.html#Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="operator_new.html#Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="operator_new.html#Exceptions"><span class="tocnumber">3</span> <span class="toctext">Exceptions</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="operator_new.html#Global_replacements"><span class="tocnumber">4</span> <span class="toctext">Global replacements</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="operator_new.html#Class-specific_overloads"><span class="tocnumber">5</span> <span class="toctext">Class-specific overloads</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="operator_new.html#Notes"><span class="tocnumber">6</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-7"><a href="operator_new.html#Example"><span class="tocnumber">7</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-8"><a href="operator_new.html#See_also"><span class="tocnumber">8</span> <span class="toctext">See also</span></a></li>
<li class="toclevel-1 tocsection-9"><a href="operator_new.html#References"><span class="tocnumber">9</span> <span class="toctext">References</span></a></li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=1" title="Edit section: Parameters">edit</a>]</span> <span class="mw-headline" id="Parameters">Parameters</span></h3>
<table class="t-par-begin">
<tr class="t-par">
<td> count
</td>
<td> -
</td>
<td> number of bytes to allocate
</td></tr>
<tr class="t-par">
<td> ptr
</td>
<td> -
</td>
<td> pointer to a memory area to initialize the object at
</td></tr>
<tr class="t-par">
<td> tag
</td>
<td> -
</td>
<td> disambiguation tag used to select non-throwing overloads
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=2" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span></h3>
<p>non-null pointer to suitably aligned memory of size at least <code>size</code>
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=3" title="Edit section: Exceptions">edit</a>]</span> <span class="mw-headline" id="Exceptions">Exceptions</span></h3>
<div class="t-li1"><span class="t-li">1-2,9-10)</span> throws <span class="t-lc">std::bad_alloc</span> <span class="t-rev-inl t-since-cxx11"><span>or another exception derived from <span class="t-lc">std::bad_alloc</span></span> <span><span class="t-mark-rev t-since-cxx11">(since C++11)</span></span></span> on failure to allocate memory</div>
<div class="t-li1"><span class="t-li">3-6)</span> <table class="t-rev-begin">
<tr class="t-rev t-until-cxx11"><td> (none)</td>
<td><span class="t-mark-rev t-until-cxx11">(until C++11)</span></td></tr>
<tr class="t-rev t-since-cxx11"><td> <div class="t-noexcept-inline"><a href="../../language/noexcept_spec.html" title="cpp/language/noexcept spec"><tt>noexcept</tt></a> specification:  <div class="t-noexcept-box"><span class="t-cc"><span class="mw-geshi cpp source-cpp"><span class="kw1">noexcept</span></span></span></div>  </div></td>
<td><span class="t-mark-rev t-since-cxx11">(since C++11)</span></td></tr>
</table></div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=4" title="Edit section: Global replacements">edit</a>]</span> <span class="mw-headline" id="Global_replacements">Global replacements</span></h3>
<p>The versions (1-4) are implicitly declared in each translation unit even if the <code><new></code> header is not included. These functions are <i>replaceable</i>: a user-provided non-member function with the same signature defined anywhere in the program, in any source file, replaces the implicit version. Its declaration does not need to be visible.
</p><p>The behavior is undefined if more than one replacement is provided in the program for any of the four implicit allocation function, or if a replacement is defined with the <code>inline</code> specifier. The program is ill-formed if a replacement is defined in namespace other than global namespace, or if it is defined as a static non-member function at global scope.
</p>
<table class="t-rev-begin">
<tr class="t-rev t-since-cxx11"><td>
The single-object version (1) is directly called by the standard library implementations of all other versions (2-4), so replacing that one function is sufficient to handle all allocations.</td>
<td><span class="t-mark-rev t-since-cxx11">(since C++11)</span></td></tr>
</table>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include <cstdio></span>
<span class="co2">#include <cstdlib></span>
<span class="co1">// replacement of a minimal set of functions:</span>
<span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">(</span><a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> sz<span class="br0">)</span> <span class="br0">{</span>
<a href="../../io/c/printf.html"><span class="kw1566">std::<span class="me2">printf</span></span></a><span class="br0">(</span><span class="st0">"global op new called, size = %zu<span class="es1">\n</span>"</span>,sz<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">return</span> <a href="../c/malloc.html"><span class="kw638">std::<span class="me2">malloc</span></span></a><span class="br0">(</span>sz<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw4">void</span> <a href="operator_delete.html"><span class="kw589">operator delete</span></a><span class="br0">(</span><span class="kw4">void</span><span class="sy2">*</span> ptr<span class="br0">)</span> <span class="kw1">noexcept</span>
<span class="br0">{</span>
<a href="../../io/c/puts.html"><span class="kw1551">std::<span class="me2">puts</span></span></a><span class="br0">(</span><span class="st0">"global op delete called"</span><span class="br0">)</span><span class="sy4">;</span>
<a href="../c/free.html"><span class="kw641">std::<span class="me2">free</span></span></a><span class="br0">(</span>ptr<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span> <span class="br0">{</span>
<span class="kw4">int</span><span class="sy2">*</span> p1 <span class="sy1">=</span> new <span class="kw4">int</span><span class="sy4">;</span>
delete p1<span class="sy4">;</span>
 
<span class="kw4">int</span><span class="sy2">*</span> p2 <span class="sy1">=</span> new <span class="kw4">int</span><span class="br0">[</span><span class="nu0">10</span><span class="br0">]</span><span class="sy4">;</span> <span class="co1">// guaranteed to call the replacement in C++11</span>
delete<span class="br0">[</span><span class="br0">]</span> p2<span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">global op new called, size = 4
global op delete called
global op new called, size = 40
global op delete called</pre></div></div>
</div>
<p>Overloads of <code>operator new</code> and <code>operator new[]</code> with additional user-defined parameters ("placement forms", version 7-8) may be declared at global scope as usual, and are called by the matching placement forms of <i>new-expressions</i>.
</p><p>The standard library placement forms of operator new (5-6) cannot be replaced and can only be customized if the placement new-expression did not use the <code>::new</code> syntax, by providing a class-specific placement new (11-12) with matching signature: <code>void* T::operator new(size_t, void*)</code> or <code>void* T::operator new[](size_t, void*)</code>.
</p>
<table class="t-rev-begin">
<tr class="t-rev t-since-cxx14"><td>
<p>The placement form <code>void* operator new(size_t, size_t)</code> is not allowed because the matching signature of the deallocation function, <code>void operator delete(void*, size_t)</code>, is a usual (not placement) deallocation function.
</p>
</td>
<td><span class="t-mark-rev t-since-cxx14">(since C++14)</span></td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=5" title="Edit section: Class-specific overloads">edit</a>]</span> <span class="mw-headline" id="Class-specific_overloads">Class-specific overloads</span></h3>
<p>Both single-object and array allocation functions may be defined as public static member functions of a class (versions 9-10). If defined, these allocation functions are called by <a href="../../language/new.html" title="cpp/language/new">new-expressions</a> to allocate memory for single objects and arrays of this class, unless the new expression used the form <code>::new</code> which bypasses class-scope lookup. The keyword <code>static</code> is optional for these functions: whether used or not, the allocation function is a static member function.
</p><p>The new expression looks for appropriate allocation function's name firstly in the class scope, and after that in the global scope. Note, that as per <a href="../../language/lookup.html" title="cpp/language/lookup">name lookup rules</a>, any allocation functions declared in class scope hides all global allocation functions for the new-expressions that attempt to allocate objects of this class.
</p>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include <iostream></span>
<span class="co1">// class-specific allocation functions</span>
<span class="kw1">struct</span> X <span class="br0">{</span>
<span class="kw4">static</span> <span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">(</span><a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> sz<span class="br0">)</span>
<span class="br0">{</span>
<a href="../../io/cout.html"><span class="kw1479">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"custom new for size "</span> <span class="sy1"><<</span> sz <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
<span class="kw1">return</span> <span class="sy4">::</span><span class="me2">operator</span> new<span class="br0">(</span>sz<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw4">static</span> <span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span><a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> sz<span class="br0">)</span>
<span class="br0">{</span>
<a href="../../io/cout.html"><span class="kw1479">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"custom new for size "</span> <span class="sy1"><<</span> sz <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
<span class="kw1">return</span> <span class="sy4">::</span><span class="me2">operator</span> new<span class="br0">(</span>sz<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span> <span class="br0">{</span>
X<span class="sy2">*</span> p1 <span class="sy1">=</span> new X<span class="sy4">;</span>
delete p1<span class="sy4">;</span>
X<span class="sy2">*</span> p2 <span class="sy1">=</span> new X<span class="br0">[</span><span class="nu0">10</span><span class="br0">]</span><span class="sy4">;</span>
delete<span class="br0">[</span><span class="br0">]</span> p2<span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">custom new for size 1
custom new for size 10</pre></div></div>
</div>
<p>Overloads of <code>operator new</code> and <code>operator new[]</code> with additional user-defined parameters ("placement forms", versions 11 and 12) may also be defined as class members. When the placement new expression with the matching signature looks for the corresponding allocation function to call, it begins at class scope before examining the global scope, and if the class-specific placement new is provided, it is called.
</p>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include <stdexcept></span>
<span class="co2">#include <iostream></span>
<span class="kw1">struct</span> X <span class="br0">{</span>
X<span class="br0">(</span><span class="br0">)</span> <span class="br0">{</span> <span class="kw1">throw</span> <a href="../../error/runtime_error/runtime_error.html"><span class="kw648">std::<span class="me2">runtime_error</span></span></a><span class="br0">(</span><span class="st0">""</span><span class="br0">)</span><span class="sy4">;</span> <span class="br0">}</span>
<span class="co1">// custom placement new</span>
<span class="kw4">static</span> <span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">(</span><a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> sz, <span class="kw4">bool</span> b<span class="br0">)</span> <span class="br0">{</span>
<a href="../../io/cout.html"><span class="kw1479">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"custom placement new called, b = "</span> <span class="sy1"><<</span> b <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
<span class="kw1">return</span> <span class="sy4">::</span><span class="me2">operator</span> new<span class="br0">(</span>sz<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="co1">// custom placement delete</span>
<span class="kw4">static</span> <span class="kw4">void</span> <a href="operator_delete.html"><span class="kw589">operator delete</span></a><span class="br0">(</span><span class="kw4">void</span><span class="sy2">*</span> ptr, <span class="kw4">bool</span> b<span class="br0">)</span>
<span class="br0">{</span>
<a href="../../io/cout.html"><span class="kw1479">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"custom placement delete called, b = "</span> <span class="sy1"><<</span> b <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
<span class="sy4">::</span><a href="operator_delete.html"><span class="kw589">operator delete</span></a><span class="br0">(</span>ptr<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span> <span class="br0">{</span>
<span class="kw1">try</span> <span class="br0">{</span>
X<span class="sy2">*</span> p1 <span class="sy1">=</span> new <span class="br0">(</span><span class="kw2">true</span><span class="br0">)</span> X<span class="sy4">;</span>
<span class="br0">}</span> <span class="kw1">catch</span><span class="br0">(</span><span class="kw4">const</span> <a href="../../error/exception.html"><span class="kw642">std::<span class="me2">exception</span></span></a><span class="sy3">&</span><span class="br0">)</span> <span class="br0">{</span> <span class="br0">}</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">custom placement new called, b = 1
custom placement delete called, b = 1</pre></div></div>
</div>
<p>If class-level <code>operator new</code> is a template function, it must have the return type of <code>void*</code>, the first argument <code>size_t</code>, and it must have two or more parameters. In other words, only placement forms can be templates.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=6" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span></h3>
<p>Even though placement new (overloads 5 and 6) cannot be replaced, a function with the same signature may be defined at class scope as described above. In addition, global overloads that look like placement new but take a non-void pointer type as the second argument are allowed, so the code that wants to ensure that the true placement new is called (e.g. <span class="t-lc">std::allocator::construct</span>), must use <code>::new</code> and also cast the pointer to <code>void*</code>.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=7" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span></h3>
<div class="t-example"><p> Custom placement forms of operator new can be used for any purpose, for example, to fill the allocated array
</p><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include <iostream></span>
<span class="co2">#include <algorithm></span>
 
<span class="kw4">void</span><span class="sy2">*</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span><a href="../../types/size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> sz, <span class="kw4">char</span> c<span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">void</span><span class="sy2">*</span> p <span class="sy1">=</span> operator new<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span>sz<span class="br0">)</span><span class="sy4">;</span>
<a href="../../algorithm/fill_n.html"><span class="kw1319">std::<span class="me2">fill_n</span></span></a><span class="br0">(</span><span class="kw1">reinterpret_cast</span><span class="sy1"><</span><span class="kw4">char</span><span class="sy2">*</span><span class="sy1">></span><span class="br0">(</span>p<span class="br0">)</span>, sz, c<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">return</span> p<span class="sy4">;</span>
<span class="br0">}</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">char</span><span class="sy2">*</span> p <span class="sy1">=</span> new<span class="br0">(</span><span class="st0">'*'</span><span class="br0">)</span> <span class="kw4">char</span><span class="br0">[</span><span class="nu0">6</span><span class="br0">]</span><span class="sy4">;</span>
p<span class="br0">[</span><span class="nu0">5</span><span class="br0">]</span> <span class="sy1">=</span> <span class="st0">'<span class="es5">\0</span>'</span><span class="sy4">;</span>
<a href="../../io/cout.html"><span class="kw1479">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> p <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
delete<span class="br0">[</span><span class="br0">]</span> p<span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">*****</pre></div></div>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=8" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="operator_delete.html" title="cpp/memory/new/operator delete"> <span class="t-lines"><span>operator delete</span><span>operator delete[]</span></span></a></div></div>
</td>
<td> deallocation functions <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/memory/new/dsc_operator_delete&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="get_new_handler.html" title="cpp/memory/new/get new handler"> <span class="t-lines"><span>get_new_handler</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> obtains the current new handler <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/memory/new/dsc_get_new_handler&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="set_new_handler.html" title="cpp/memory/new/set new handler"> <span class="t-lines"><span>set_new_handler</span></span></a></div></div>
</td>
<td> registers a new handler <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/memory/new/dsc_set_new_handler&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../get_temporary_buffer.html" title="cpp/memory/get temporary buffer"> <span class="t-lines"><span>get_temporary_buffer</span></span></a></div></div>
</td>
<td> obtains uninitialized storage <br /> <span class="t-mark">(function)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../c/malloc.html" title="cpp/memory/c/malloc"> <span class="t-lines"><span>malloc</span></span></a></div></div>
</td>
<td> allocates memory <br /> <span class="t-mark">(function)</span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/memory/new/operator_new&action=edit&section=9" title="Edit section: References">edit</a>]</span> <span class="mw-headline" id="References">References</span></h3>
<div class="t-ref-std-c++11">
<ul><li> C++11 standard (ISO/IEC 14882:2011):
</li></ul>
<dl><dd><ul><li> 18.6 Dynamic memory management [support.dynamic]
</li></ul>
</dd></dl>
</div>
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