<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/102353>102353</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
             Assertion `isa<LabelDecl>(D) && "declaration not instantiated in this scope"' failed.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang,
            crash-on-valid,
            needs-reduction
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          dcb314
      </td>
    </tr>
</table>

<pre>
    
clang-20: /home/dcb40b/llvm/trunk/clang/lib/Sema/SemaTemplateInstantiate.cpp:4400: llvm::PointerUnion<clang::Decl*, llvm::SmallVector<clang::VarDecl*, 4>*>* clang::LocalInstantiationScope::findInstantiationOf(const clang::Decl*): Assertion `isa<LabelDecl>(D) && "declaration not instantiated in this scope"' failed.

This one has been happening for the last couple of days at least.

[HQ3xLiteScaler-d629c9.sh.gz](https://github.com/user-attachments/files/16533062/HQ3xLiteScaler-d629c9.sh.gz)
[HQ3xLiteScaler-d629c9.cpp.gz](https://github.com/user-attachments/files/16533063/HQ3xLiteScaler-d629c9.cpp.gz)


</pre>
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