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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - priority queue should not copy comparators when calling push_heap and pop_heap" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24313&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=3BhXQVdwV8eACDdw2TpKitDJaWiq9AmaNoffFrcsTU0&s=w50kKN3Mih0qXqGfEhdb_n4bqTISVJ1MoED2eQdDHp8&e=">24313</a>
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<th>Summary</th>
<td>priority queue should not copy comparators when calling push_heap and pop_heap
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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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>konig121@gmail.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14672" name="attach_14672" title="Program demonstrating the extra copy operations">attachment 14672</a> <a href="attachment.cgi?id=14672&action=edit" title="Program demonstrating the extra copy operations">[details]</a></span>
Program demonstrating the extra copy operations
The implementation of std::priority_queue's push and pop methods do not force
the comparators to be passed by reference, resulting in extra copy operations.
See the attached program for example reproduction steps. The issue seems to be
due to the way that push_heap and pop_heap are called.</pre>
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