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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 - Variable declared in if init statement sneaks into lambda expression"
href="https://bugs.llvm.org/show_bug.cgi?id=49053">49053</a>
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</tr>
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<th>Summary</th>
<td>Variable declared in if init statement sneaks into lambda expression
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++17
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sgiesecke@mozilla.com
</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 fails to compile with clang:
```
int main() {
if (auto foo = [] { int foo = 42; return true; }()) {}
}
```
saying
#1 with x86-64 clang (trunk)
<source>:2:29: error: redefinition of 'foo' with a different type: 'int' vs
'auto'
if (auto foo = [] { int foo = 42; return true; }()) {}
^
<source>:2:14: note: previous definition is here
if (auto foo = [] { int foo = 42; return true; }()) {}
^
1 error generated.
ASM generation compiler returned: 1
<source>:2:29: error: redefinition of 'foo' with a different type: 'int' vs
'auto'
if (auto foo = [] { int foo = 42; return true; }()) {}
^
<source>:2:14: note: previous definition is here
if (auto foo = [] { int foo = 42; return true; }()) {}
^
1 error generated.
Execution build compiler returned: 1
```
gcc accepts this code, and this seems right. The lambda expression does not
capture foo.</pre>
</div>
</p>
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