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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - optional does not work with reference_wrapper"
href="https://bugs.llvm.org/show_bug.cgi?id=39605">39605</a>
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<th>Summary</th>
<td>optional does not work with reference_wrapper
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>unspecified
</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
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ldionne@apple.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
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<pre>The following code does not compile with libc++ trunk:
-----------------------------------------
#include <optional>
#include <cassert>
int main() {
int i = 1, j = 2;
std::optional<std::reference_wrapper<int&>> opt = i;
assert(&*opt == &i);
opt = j;
assert(&*opt == &j);
}
-----------------------------------------
Live example: <a href="https://wandbox.org/permlink/vdqObz9zKRqNw5zJ">https://wandbox.org/permlink/vdqObz9zKRqNw5zJ</a>
Our optional does not seem to support reference_wrapper properly.</pre>
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