<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/56250>56250</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-tidy] crash when analysing nested class defintion
        </td>
    </tr>

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

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

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

<pre>
    I have a class and a nested class definition.

```cpp
class communicator {
   ... 
   class iterator {
   };
};
```

Even with an empty nested class, clang-tidy (13.0.0) crashes.
You can find the approximate locations of the lines in the source code here: https://gitlab.com/correaa/boost-mpi3
Here it is the trace:

```
cd /home/correaa/prj/alf/boost/mpi3/.build.clang++/test && /usr/bin/cmake -E __run_co_compile --tidy="clang-tidy;--extra-arg-before=--driver-mode=g++" --source=/home/correaa/prj/alf/boost/mpi3/test/communicator_all_gatherv.cpp -- /usr/bin/clang++  -I/home/correaa/prj/alf/boost/mpi3/test/../../../.. -isystem /usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -isystem /usr/lib/x86_64-linux-gnu/openmpi/include -g -Wall -Wextra -Werror -Wfatal-errors -std=gnu++17 -o CMakeFiles/communicator_all_gatherv.cpp.x.dir/communicator_all_gatherv.cpp.o -c /home/correaa/prj/alf/boost/mpi3/test/communicator_all_gatherv.cpp
Error running 'clang-tidy': PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0.      Program arguments: clang-tidy --extra-arg-before=--driver-mode=g++ /home/correaa/prj/alf/boost/mpi3/test/communicator_igather.cpp -- /usr/bin/clang++ -I/home/correaa/prj/alf/boost/mpi3/test/../../../.. -isystem /usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -isystem /usr/lib/x86_64-linux-gnu/openmpi/include -g -Wall -Wextra -Werror -Wfatal-errors -std=gnu++17 -o CMakeFiles/communicator_igather.cpp.x.dir/communicator_igather.cpp.o -c /home/correaa/prj/alf/boost/mpi3/test/communicator_igather.cpp
1.      <eof> parser at end of file
2.      While analyzing stack: 
        #0 Calling boost::mpi3::request::wait() at line /home/correaa/prj/alf/boost/mpi3/test/../../mpi3/../mpi3/request.hpp:51:4
        #1 Calling boost::mpi3::request::~request()
        #2 Calling boost::mpi3::main(int, char **, mpi3::communicator)
3.      /home/correaa/prj/alf/boost/mpi3/test/../../mpi3/../mpi3/request.hpp:61:12: Error evaluating statement
4.      /home/correaa/prj/alf/boost/mpi3/test/../../mpi3/../mpi3/request.hpp:61:12: Error evaluating statement
 #0 0x00007ff2143f6183 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib/x86_64-linux-gnu/libLLVM-13.so.1+0xbb9183)
 #1 0x00007ff2143f4500 llvm::sys::RunSignalHandlers() (/lib/x86_64-linux-gnu/libLLVM-13.so.1+0xbb7500)
 #2 0x00007ff2143f661a (/lib/x86_64-linux-gnu/libLLVM-13.so.1+0xbb961a)
 #3 0x00007ff213340520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007ff21bb782e2 clang::ento::mpi::MPIChecker::checkUnmatchedWaits(clang::ento::CallEvent const&, clang::ento::CheckerContext&) const (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x27572e2)
 #5 0x00007ff21bb7a224 (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x2759224)
 #6 0x00007ff21b97f4fe clang::ento::CheckerManager::runCheckersForCallEvent(bool, clang::ento::ExplodedNodeSet&, clang::ento::ExplodedNodeSet const&, clang::ento::CallEvent const&, clang::ento::ExprEngine&, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x255e4fe)
 #7 0x00007ff21b9bb4b2 clang::ento::ExprEngine::evalCall(clang::ento::ExplodedNodeSet&, clang::ento::ExplodedNode*, clang::ento::CallEvent const&) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x259a4b2)
 #8 0x00007ff21b9bb1f8 clang::ento::ExprEngine::VisitCallExpr(clang::CallExpr const*, clang::ento::ExplodedNode*, clang::ento::ExplodedNodeSet&) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x259a1f8)
 #9 0x00007ff21b9a1499 clang::ento::ExprEngine::Visit(clang::Stmt const*, clang::ento::ExplodedNode*, clang::ento::ExplodedNodeSet&) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x2580499)
#10 0x00007ff21b99d33a clang::ento::ExprEngine::ProcessStmt(clang::Stmt const*, clang::ento::ExplodedNode*) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x257c33a)
#11 0x00007ff21b99cff3 clang::ento::ExprEngine::processCFGElement(clang::CFGElement, clang::ento::ExplodedNode*, unsigned int, clang::ento::NodeBuilderContext*) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x257bff3)
#12 0x00007ff21b988905 clang::ento::CoreEngine::dispatchWorkItem(clang::ento::ExplodedNode*, clang::ProgramPoint, clang::ento::WorkListUnit const&) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x2567905)
#13 0x00007ff21b988653 clang::ento::CoreEngine::ExecuteWorkList(clang::LocationContext const*, unsigned int, llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x2567653)
#14 0x00007ff21bce1b05 (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x28c0b05)
#15 0x00007ff21bccaa38 (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x28a9a38)
#16 0x00007ff21b78ab9c clang::MultiplexConsumer::HandleTranslationUnit(clang::ASTContext&) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x2369b9c)
#17 0x00007ff21a00c544 clang::ParseAST(clang::Sema&, bool, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0xbeb544)
#18 0x00007ff21b752748 clang::FrontendAction::Execute() (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x2331748)
#19 0x00007ff21b6d3a56 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x22b2a56)
#20 0x00007ff21b9007ff clang::tooling::FrontendActionFactory::runInvocation(std::shared_ptr<clang::CompilerInvocation>, clang::FileManager*, std::shared_ptr<clang::PCHContainerOperations>, clang::DiagnosticConsumer*) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x24df7ff)
#21 0x000000000097b179 (/usr/lib/llvm-13/bin/clang-tidy+0x97b179)
#22 0x00007ff21b90057a clang::tooling::ToolInvocation::runInvocation(char const*, clang::driver::Compilation*, std::shared_ptr<clang::CompilerInvocation>, std::shared_ptr<clang::PCHContainerOperations>) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x24df57a)
#23 0x00007ff21b8ff88d clang::tooling::ToolInvocation::run() (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x24de88d)
#24 0x00007ff21b901b89 clang::tooling::ClangTool::run(clang::tooling::ToolAction*) (/lib/x86_64-linux-gnu/libclang-cpp.so.13+0x24e0b89)
#25 0x0000000000977af7 (/usr/lib/llvm-13/bin/clang-tidy+0x977af7)
#26 0x000000000045e790 (/usr/lib/llvm-13/bin/clang-tidy+0x45e790)
#27 0x00007ff213327fd0 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#28 0x00007ff21332807d call_init ./csu/../csu/libc-start.c:128:20
#29 0x00007ff21332807d __libc_start_main ./csu/../csu/libc-start.c:379:5
#30 0x000000000045ad05 (/usr/lib/llvm-13/bin/clang-tidy+0x45ad05)
Segmentation fault
```

</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJztWktzo7gW_jVko4IC8V5kkXbs26lKZlKTnknNyiVA2JrGwBUicebXz5EAGxE77dh9q2Zxu1xEgPTpnO88dJA6qbK36zu0Ji8UEZQWpGkQKTNol7QRNOsfZTRnJROsKi3DvjXsm_4a2N0vrevuSdc9rTabtmQpERVHRvile4cQsiwL7W66vkxQ_q6fEd4abn-rtYcJx1LMX2iJXplYg-SIbmrxpglv4JlslCtTsOwNGThyXMu2bAPHKOWkWdOmV-rPqkUpYICuGRJrYKSuebVlGyIoKipQBwhoUJWrlwWDWRAr1U1TtTyloHhG0Zpyarg3aC1E3UDDwAv4rZgoSGIBNXCTVpxTQqCVVFUjzE3N3E6GrzAYOEGsUbiCk1SCHWS9pzwDnRbrakM14Jr_BVdS5MMk8FdNgxdW0rIisxQpBv6ifgsBlAFQAD-J1zZcDmSlBN2Q7xSZc7Rc8rZcphX8AKqAZ4pTw701MN5zDOYyTboF2U3CV2ZC80oycmuaGWcvlJsboAnud5NjAOoYVFCfUkbKrfruXW5JimK5IsAff7HANQH9nUp73REy786b07ImF2Sy5g08b7OfrmAJXLdRsAw8E1ym3ZqrsoVHVU1LgIMWK9Oizej-2UUwyFwh8xkYgKuygfzLOQSY-ZwTQQpT3TXIbEQmjSBhJA9OiMwKzR7A1guwbfMDUq2tlTH-o04VMtPPuucJFu0DX6kFLlmycgWzhCMXxKEMwcf7-c3THDVtsoGYIihpV4jTuuICiWoSoPCusYriZWNVHFxjofLgQKqMRZUsUELS7yoq-6TxJOABytpNvQtTG17Fj7xacbJBEAHthpZCTjTOQ5-JkJ_BIOvoOyEe_h8Op4TDiM_DoTDu8LPCYITZuZojXc1wZ7TKDXeOasIbyhERiILzwkKVg-hdTyx7Pq9l1iYlKd7-ljHTSOeVjjmsL7GBXRvNgC_5upMI3Nq9UUKpFqf_benw-JUwEDKSaylMKpfEM9Xc-82wSI3a_ZTWupZB5jtw8cYSO5-Q2Ajnw72Se4yDP8bZEBkrESuFqinWBIoWfKN-M7TvNrbYbgJXGep_TU0gqXGwtGiXHOkLKVqoWzpbQwxBJuoE8v5tAiHlevbWhn9hnmPHc_PAiVwkc3LHLKSBrvHIwQgq835TBRKO9p04eV2C1KDNRpUzM6QMFiNl7-OpA17c3__xYEJ12FSWAynA3iZJDBLsjIiUr-kier5tHxLxt7Z8YiuItK-wjhSUN32YnCVFCJNoUuApUYFDzlQQRmrQ7hjadT3bx_YJ0KkEDRSoh2GIhumNMUGdCFPcLYYdWeAE1S7ausbD491sTdPvlPdRJW9-L6EWh1b2DHlHMnoQQwax_CgQUI-X0mOD3TfAu67dFLOqFLA6qJ5xN-oUldVqLvO75NNVuuPQD0E5TXt_oj3B2DsfPobRGnygwcdh7uX0Q20fYAFYDbxC-dQ_bhYV31EH4kHwF0eJm2_rAmqU7Be4PNEPOZ50PcEop9sPsPm8XMG60_fqhD4lzA7S6_sU2NPoDXV6k8RLjvjuSJjuDeQ6qcsxPz2Tw37BOZm688mICeiqkRFNyXDy6DQy_mANE0o8eKEzMjwdZD6u3qk0HGL2EhpAS42GWKeBOF4cf4IGXf0nsRH_VtUjGzTbV0mw_Nm66nHmuuQ01eGLKKVNI9X9KQScr1WYgtCaVs5EqzTP3dO0qjutZov_zIuumtF9e_T8dMu2ZQO1A80Q-2Cc7P9F7uSM1q_LaElAa40WrNMSRbHtH0k88AE7piVjTS2X6ueKf7-DMu-UHPje-v1H9GP1EQ9yinvWiN9L9nPSXhCCmhoP7pSHwD_iHlMe5luatoIOMuo03Pd7ir35tBiYusC-xLwrBW8b9kJ_o_msFI8CVvLZQWF6-p5kod2Du_PLmAHFNWb0yi6lTgIeciZ8lNrJhHi9dEpTQmAJOheexDBag9dLpzAiSZyO7frQFoLVBd2ChZp2M9RMXUkPnx5lUygDStfTTXvz9E0vKs8U2g1ikEkTWitIiG2nvudpQSM3AWD-SZKlG6LVSJfWSglNYGJNMr06CH0celp1sOCSkjK7SSVpWoCc_HV0mCVgxdNNqy_RQeYSPxjLMuu2sPkdRAUpUz1cewE1AifCX2RVnGAQZywvnqyrqjGWV4Cx2GFZFiQVFX8zhnr-rnzpEwuIp7a11JfpmnCaLetputgTsRslk4SWbOUO2PDV0KWnH8I-zr7KACCQCfmvtTzjkYcn76FvGVmV8L3O0l2MXbSKeVkOzGnUDot79y8OEycc4MfbiTLDmhJmvCfa7yYDcjdOA8ZTm_khOWqzb3Az5viQsdSe0pFKqNsZHtusH3WaPY6a-RJLXmIl4EojU19jozyPouyzZF6WRbyMwpyaUN7EwiBYfFSomXwuJRvL85EGQyq5yN-pDTJpQvsTfw9JHp7j73KcBhxowJ5PoVD6PHA3TgMO9T0nHOaZjZZLqfMS0jMXy1SeAMkNWCT3GtOmHbYdm7cmo7Xcni9rUfRETQdZa2Dcj-DiBPtZo8mskR2Cx8kx8rB7OlHXlOimQrdSCYclKLb3oPEhUE2VQ1ocBHch3YDYO-zd9ujAP8l2xdan-Jfjdvw_0ZX8PFGBhHICFc_BY-ar7NrNYjcmV4KJgl4b_pcRrn_bH4-9rmnZHTA0co_3_f8ikNNctby4fnc8vm6H43FV6_Z6wPfVXzSV286saVp1DuMH2Lev1td2lnsxDqPIjxOf5CmU5VESeb7nkij3A_-qIAktGimqgXFJX5GCgDbIe8WusY2xHeDQifzAdSzHsW2SEwfIybATY8OzoWZixe5Q8IpfK5HkSSG8LKCe358YXoGGsmBXzEh80op1xa_7jfUrNfW1Ev0fSgchOA">