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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang doesn't add LLVM lifetime markers for temporaries created by lifetime extension"
href="https://llvm.org/bugs/show_bug.cgi?id=27451">27451</a>
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<th>Summary</th>
<td>Clang doesn't add LLVM lifetime markers for temporaries created by lifetime extension
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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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
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>timshen91@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>// RUN: clang++ -O2 -S -emit-llvm -fno-exceptions -std=c++11 %s -o - |
FileCheck %s
// CHECK: @llvm.lifetime.start
#include <string>
extern void Bar(const std::string&);
void Foo() {
// Both string objects should share the same stack slot, but they don't.
{
const std::string& v = {"asdf"};
Bar(v);
}
{
const std::string& v = {"adsf"};
Bar(v);
}
}</pre>
</div>
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