<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61961>61961</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Is libunwind safe to use from a signal handler?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          ionyshch
      </td>
    </tr>
</table>

<pre>
    I'm looking for a way to create stack trace which is safe to use from a signal handler on Linux, x86-64 architecture.
I doubt libc backtrace() is good for this, so looking for alternatives.

While googling for backtrace() signal safety I saw couple of articles / notes stating [link one](https://blog.openj9.org/2022/03/16/collecting-native-stack-traces-on-macos-with-libunwind/) [link two](https://github.com/WAVM/WAVM/issues/80#issuecomment-381118318) LLVM libunwind is safe for use from a signal handler.
[Docs](https://bcain-llvm.readthedocs.io/projects/libunwind/en/latest/) I found say nothing about signal safety.

So is libunwind signal safe?
</pre>
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