<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/55964>55964</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            ASan on Mac arm64 clang only showing stack trace from violating file
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          j-p-c
      </td>
    </tr>
</table>

<pre>
    I [asked about this on Stack Overflow](https://stackoverflow.com/questions/72541020/why-does-addresssanitizer-on-mac-arm64-only-show-the-part-of-the-stack-trace-fro) thinking it was user error, but I'm thinking it might be a bug.

However, I also note that [this is not a supported platform](https://clang.llvm.org/docs/AddressSanitizer.html#supported-platforms), so I'm prepared for this being a wontfix.

The stack trace only shows those functions that are in the same source file as the function that violated ASan.

New M1 Mac, LLVM installed from Homebrew:
```
$ /opt/homebrew/opt/llvm/bin/clang --version
Homebrew clang version 13.0.1
Target: arm64-apple-darwin21.5.0
Thread model: posix
InstalledDir: /opt/homebrew/opt/llvm/bin
```

Simplest repro I could come up with is in the Stack Overflow question above.

I'm happy to try to help debug this, but not currently familiar with the LLVM codebase.
</pre>
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