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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 --- - Clang doesn’t implement DR1579 for id-expressions in return statements"
href="https://llvm.org/bugs/show_bug.cgi?id=27785">27785</a>
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<th>Summary</th>
<td>Clang doesn’t implement DR1579 for id-expressions in return statements
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>heavenandhell171@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Given the following snippet:
#include <iostream>
#include <memory>
using namespace std;
struct Base
{
};
struct Derived : public Base
{
void DoStuffSpecificToDerivedClass()
{
}
};
std::unique_ptr<Base> factoryMethod()
{
auto derived = std::make_unique<Derived>();
derived->DoStuffSpecificToDerivedClass();
return derived;
}
Clang gives the error:
error: no viable conversion from returned value of type 'unique_ptr<Derived,
default_delete<Derived>>' to function return type 'unique_ptr<Base,
default_delete<Base>>'
return derived;
^~~~~~~
Both VS2015 and GCC 5.1 compile without any error.</pre>
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