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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Structured binding declaration & closure does not work"
href="https://bugs.llvm.org/show_bug.cgi?id=39963">39963</a>
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<th>Summary</th>
<td>Structured binding declaration & closure does not work
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>7.0
</td>
</tr>
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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>
</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>C++'17
</td>
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<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bugs.llvm.org-jfkdshfj@exyi.cz
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>The following code does not compile:
````
#include<tuple>
void a() {
const auto [t, i] = std::pair{1, 2};
([i](){ return i; })();
}
int main() {}
```
When I remove the pair "deconstruction" and declare the variable traditionally
it works. When I don't use the variable in lambda closure, it works. When I
compile with gcc, it works. Clang says:
```
database/aggregator.cpp:5:7: error: 'i' in capture list does not name a
variable
([i](){ return i; })();
^
database/aggregator.cpp:5:20: error: reference to local binding 'i' declared in
enclosing function 'a'
([i](){ return i; })();
^
database/aggregator.cpp:4:20: note: 'i' declared here
const auto [t, i] = std::pair{1, 2};
^
2 errors generated.
```</pre>
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