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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Compiled binary does not invoke specialized constructor"
href="https://bugs.llvm.org/show_bug.cgi?id=47786">47786</a>
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<th>Summary</th>
<td>Compiled binary does not invoke specialized constructor
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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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>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>jjkoshy@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Created <span class=""><a href="attachment.cgi?id=24040" name="attach_24040" title="Sample program demonstrating the issue">attachment 24040</a> <a href="attachment.cgi?id=24040&action=edit" title="Sample program demonstrating the issue">[details]</a></span>
Sample program demonstrating the issue
This was reported by my colleague Lucas Wang.
I have attached a sample program from him.
<a href="https://godbolt.org/z/n5qPeM">https://godbolt.org/z/n5qPeM</a> also has a copy
The code and comments explain the issue more clearly but in short:
- We have a class template with a deleted copy constructor
- We specialize that class and add back the copy constructor for that class
- The main function should invoke that specialized copy constructor and indeed
compilation fails without it
- However, at runtime, the copy constructor does not get invoked
I'm not sure if this is an ill-formed program but for comparison, gcc does seem
to invoke the constructor.</pre>
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