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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang drops qualifiers when invoking a non-const PMF via a const derived object."
href="https://llvm.org/bugs/show_bug.cgi?id=27398">27398</a>
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<th>Summary</th>
<td>Clang drops qualifiers when invoking a non-const PMF via a const derived object.
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>eric@efcs.ca
</td>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
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<pre>When invoking a PMF of the form 'Ret (T::*)(<...>)" using an object of type 'D'
derived from 'T', clang will allow that object to be const. For example.
struct Base { void mutate() {} };
struct Derived : Base {};
const Derived d;
auto pmf = & Base::mutate;
(d.*pmf)(); // allowed
Base b;
(b.*pmf)(); // rejected; drops qualifiers.
This is possibly related to "PR 23409 - Missing qualifiers in derived to base
implicit casts" (<a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Missing qualifiers in derived to base implicit casts"
href="show_bug.cgi?id=23409">https://llvm.org/bugs/show_bug.cgi?id=23409</a>)</pre>
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</p>
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