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

[deep067]

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