<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/135159>135159</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Open source app [actor-framework-0.19.6] detail.group_tunnel,detail.local_group_module & mixin.sender tests failing with clang using when using -fvirtual-function-elimination -fvisibility=hidden
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          deep067
      </td>
    </tr>
</table>

<pre>
    Clang fails to compile actor-framework-0.19.6 few of tests with -fvirtual-function-elimination and -fvisibility=hidden
with clang version 21.0.0

The following tests FAILED:
        127 - detail.group_tunnel (SEGFAULT)
        128 - detail.local_group_module (SEGFAULT)
        157 - mixin.sender (SEGFAULT)

Steps to reproduce 

git clone https://github.com/actor-framework/actor-framework.git
cd actor-framework
mkdir build
cd build
cmake .. -DCAF_BUILD_EXAMPLES=OFF -DCAF_BUILD_TESTS=ON -DCMAKE_CXX_FLAGS="-O3 -flto -fvirtual-function-elimination -fvisibility=hidden"
make -j4  
cd test
./caf-test
</pre>
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