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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Const-qualified derived object can call a non-const base member-function."
href="https://bugs.llvm.org/show_bug.cgi?id=34368">34368</a>
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<th>Summary</th>
<td>Const-qualified derived object can call a non-const base member-function.
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>4.0
</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>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++14
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>delrieutheo@gmail.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<pre>Hello, I have the bug same bug than the one reported in
<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="show_bug.cgi?id=27398">https://bugs.llvm.org/show_bug.cgi?id=27398</a>.
The funny thing is that when compiling with -std=c++1z, the code correctly gets
rejected, whereas -std=c++11/14 doesn't emit any error.
#include <utility>
struct base
{
void f() {}
};
struct derived : base{};
int main(int argc, char const *argv[])
{
derived const d;
using should_not_compile = decltype((std::declval<derived
const&>().*std::declval<decltype(&base::f)>())());
}
Is there a workaround to that? I started to implement traits
(is_correctly_cv_qualified and such) but that'd be great if I could solve this
in an easier way.</pre>
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