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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - call to implicitly-deleted default constructor"
href="https://bugs.llvm.org/show_bug.cgi?id=37862">37862</a>
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<th>Summary</th>
<td>call to implicitly-deleted default constructor
</td>
</tr>
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<th>Product</th>
<td>clang
</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>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zhonghao@pku.org.cn
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The code is as follow:
template<typename T>
struct wrap
{
wrap() = default;
wrap(wrap&&) = default; // Line 5
wrap(const wrap&) = default;
T t;
};
struct S {
S() = default;
S(const S&){}
S(S&&) = default;
};
typedef wrap<const S> W;
W get() { return W(); } // Line 19
int main() {}
clang++ rejects this code, and produces error messages:
error: call to implicitly-deleted default constructor of 'W' (aka 'wrap<const
S>')
W get() { return W(); } // Line 19
Indeed, the code comes from a gcc bug report:
<a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53733">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53733</a>
A previous version of g++ also rejects the code, but is fixed.
Please check the problem.</pre>
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