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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang complains about constexpr function in case for switch statement"
href="https://bugs.llvm.org/show_bug.cgi?id=41241">41241</a>
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<th>Summary</th>
<td>clang complains about constexpr function in case for switch statement
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>8.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mkmostafa92@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>struct X
{
enum class E
{
A,B
};
static constexpr X A()
{
return X{E::A};
}
static constexpr X B()
{
return X{E::B};
}
constexpr operator E() const
{
return a;
}
E a;
};
template <typename T>
struct Y
{
void f()
{
// without this line clang errs
// const auto & x = this->x;
switch(x)
{
case X::A():
case X::B():
default: return;
}
}
X x = X::A();
};
int main()
{
Y<int>{}.f();
}
the previous code sample does not compile without the commented line or simply
adding this->x to the switch condition</pre>
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