<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/138758>138758</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Sanitizers don't fall back to the `LLVM_SYMBOLIZER_PATH` env variable
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            compiler-rt:sanitizer
      </td>
    </tr>

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

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

<pre>
    Currently, my understanding is that the sanitizer runtimes look for an external symbolizer with `ASAN_SYMBOLIZER_PATH` (or `UBSAN_...`, ... depending on the sanitizer), and if it isn't found looks for `llvm-symbolizer` binary in the `PATH`.

It would be nice to teach it to look for `LLVM_SYMBOLIZER_PATH` environment variable after the sanitizer-specific environment variable and prior to looking in the `PATH`. Lots of systems seem to spend quite a bit of time basically replicating the path of the symbolizer binary across N different environment variables because this is missing, including Lit for example.
</pre>
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