<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [C++11] allocate_shared should not require rebind of an allocator"
href="http://llvm.org/bugs/show_bug.cgi?id=20460">20460</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[C++11] allocate_shared should not require rebind of an allocator
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kariya_mitsuru@hotmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The sample code below should be compiled successfully.
================================================================
#include <memory>
template <typename T>
struct Allocator {
typedef T value_type;
Allocator() = default;
template <typename U>
Allocator(const Allocator<U>&) {}
T* allocate(size_t n) {
return static_cast<T*>(::operator new(sizeof(T) * n));
}
void deallocate(T* p, size_t) {
::operator delete(static_cast<void*>(p));
}
};
template <typename T, typename U>
bool operator==(const Allocator<T>&, const Allocator<U>&)
{
return true;
}
template <typename T, typename U>
bool operator!=(const Allocator<T>&, const Allocator<U>&)
{
return false;
}
int main()
{
auto p = std::allocate_shared<int>(Allocator<int>());
}
================================================================
This sample is compiled successfully if the custom allocator Allocator has a
rebind template.
According to C++11 standard 17.6.3.5 Allocator requirements
[allocator.requirements], a rebind template is not required for a custom
allocator.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>