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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang incorrectly treat capture-by-reference variable in lambda as constexpr"
href="https://llvm.org/bugs/show_bug.cgi?id=27148">27148</a>
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<th>Summary</th>
<td>Clang incorrectly treat capture-by-reference variable in lambda as constexpr
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.8
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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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++11
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ytj000@gmail.com
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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
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<p>
<div>
<pre>The following code shows clang has inconsistent behavior.
struct A {
constexpr operator int() const { return 0; }
};
int main() {
A a;
[&a]() { constexpr int b = a; }; // clang incorrectly accepted
A &ra = a;
constexpr int b = ra; // clang rejected
}</pre>
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