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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - NamedRegionTimer is not thread safe"
href="https://bugs.llvm.org/show_bug.cgi?id=45072">45072</a>
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<th>Summary</th>
<td>NamedRegionTimer is not thread safe
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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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>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Support Libraries
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>tomasz.miasko@gmail.com
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The NamedRegionTimer obtains a timer instance from NamedRegionTimers global,
which keeps a single timer per timer name and timer group name. Those names are
generally constants and a single timer might end up being used from multiple
threads:
Assertion `!Running && "Cannot start a running timer"' failed.
This affects rustc -Z time-llvm-passes when compiling with multiple codegen
units.
Downstream bug reports:
* <a href="https://github.com/rust-lang/rust/issues/53136">https://github.com/rust-lang/rust/issues/53136</a>
* <a href="https://github.com/rust-lang/rust/issues/48329">https://github.com/rust-lang/rust/issues/48329</a></pre>
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</p>
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