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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std::map custom allocator with explicit copy constructor"
href="https://llvm.org/bugs/show_bug.cgi?id=29000">29000</a>
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<th>Summary</th>
<td>std::map custom allocator with explicit copy constructor
</td>
</tr>
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<th>Product</th>
<td>libc++
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>furkanusta17@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>While using std::map If the custom allocator has an explicit copy constructor,
it doesn't compile.
Here is the link for the non-working code:
<a href="http://melpon.org/wandbox/permlink/wPpkYEzt0NrxTbJC">http://melpon.org/wandbox/permlink/wPpkYEzt0NrxTbJC</a>
My reasoning is, in map constructor
map(const allocator_type& __a)
: __tree_(__a)
__a is an allocator with std::pair.
However, constructor of __tree_ expects __value_type.
It requires copy construction which is explicit.</pre>
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