<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/152893>152893</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] Assertion `DynamicDecl' failed, with option "-fexperimental-new-constant-interpreter --std=c++2a"
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            c++20,
            clang:frontend,
            crash,
            clang:bytecode
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          k-arrows
      </td>
    </tr>
</table>

<pre>
    Reproducer:
https://godbolt.org/z/Y3zn4rxbv
```cpp
struct X
{
  virtual int f() { return 0; };
};

X a[3][4];
static_assert (a[2][3].f());
```

Backtrace:
```console
clang++: /root/llvm-project/clang/lib/AST/ByteCode/Interp.cpp:1360: bool clang::interp::CallVirt(clang::interp::InterpState&, clang::interp::CodePtr, const clang::interp::Function*, uint32_t): Assertion `DynamicDecl' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: /opt/compiler-explorer/clang-assertions-20.1.0/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-14.2.0 -fcolor-diagnostics -fno-crash-diagnostics -fexperimental-new-constant-interpreter --std=c++2a <source>
1.      <eof> parser at end of file
 #0 0x0000000003e64af8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x3e64af8)
 #1 0x0000000003e627b4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x3e627b4)
 #2 0x0000000003daec88 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x000073adf7a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x000073adf7a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x000073adf7a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x000073adf7a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x000073adf7a2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x000073adf7a39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x0000000007c8140a clang::interp::CallVirt(clang::interp::InterpState&, clang::interp::CodePtr, clang::interp::Function const*, unsigned int) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7c8140a)
#10 0x0000000007ed6977 clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCallExpr(clang::CallExpr const*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7ed6977)
#11 0x0000000007ed3a50 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7ed3a50)
#12 0x0000000007ee2bad clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7ee2bad)
#13 0x0000000007ed3a50 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7ed3a50)
#14 0x0000000007edcb4d clang::interp::Compiler<clang::interp::EvalEmitter>::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7edcb4d)
#15 0x0000000007ac58a9 clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7ac58a9)
#16 0x0000000007abfe7a clang::interp::Context::evaluateAsRValue(clang::interp::State&, clang::Expr const*, clang::APValue&) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7abfe7a)
#17 0x0000000007a42733 EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#18 0x0000000007a4594f clang::Expr::EvaluateAsRValue(clang::Expr::EvalResult&, clang::ASTContext const&, bool) const (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x7a4594f)
#19 0x0000000006d56256 clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, clang::Sema::VerifyICEDiagnoser&, clang::Sema::AllowFoldKind) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x6d56256)
#20 0x0000000006d56d32 clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, unsigned int, clang::Sema::AllowFoldKind) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x6d56d32)
#21 0x0000000006c74904 clang::Sema::BuildStaticAssertDeclaration(clang::SourceLocation, clang::Expr*, clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x6c74904)
#22 0x000000000689f9cb clang::Parser::ParseStaticAssertDeclaration(clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x689f9cb)
#23 0x000000000688dca9 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x688dca9)
#24 0x000000000684c767 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x684c767)
#25 0x000000000684d5fd clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x684d5fd)
#26 0x000000000683fa5a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x683fa5a)
#27 0x00000000047f7e58 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x47f7e58)
#28 0x0000000004abdd25 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x4abdd25)
#29 0x0000000004a407de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x4a407de)
#30 0x0000000004babd8e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x4babd8e)
#31 0x0000000000cfe40f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0xcfe40f)
#32 0x0000000000cf5e9a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#33 0x000000000483e749 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#34 0x0000000003daf134 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x3daf134)
#35 0x000000000483ed3f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#36 0x0000000004801bad clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x4801bad)
#37 0x0000000004802c2e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x4802c2e)
#38 0x000000000480a765 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0x480a765)
#39 0x0000000000cfb213 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0xcfb213)
#40 0x0000000000bc3694 main (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0xbc3694)
#41 0x000073adf7a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#42 0x000073adf7a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#43 0x0000000000cf5945 _start (/opt/compiler-explorer/clang-assertions-20.1.0/bin/clang+++0xcf5945)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzkWl2T2yjW_jX0DSWXhL4v-kK22_Nm3mxNV5xKzV65EEJuNlhoATnu-fVbgNz6cLsrybazFzPVU5HF4fA8zzmCAxJWiu0bSu9BvATx-g53-knI-68ellJ8U3elqJ7vP9FWiqojVIKwAH7xpHWrzCXaALTZi6oUXC-E3AO0-QugzT_Dv5pInsoj8AuQ-O6PtC3wC6VlRzT807SkS-AXEB6Z1B3mkDUa1gBlAOUQpEsoqe5kA30QLiFI1yBc2k7nC7_4E2IQL0MQr0G8jMw_tkVprBnZYaWo1BCgzFghZ2WMF_0g5s-5OkN0bpeYfNUSE-rIDgREowSnwC8Ix80eoKX5CwsI0EYKoQHacH48eK0U_6LE_OztNpyVAG2K7WeANstnTVeiogBtPjSaynZhhAmLIEx846wUgkPXMSxAWDBr5K5XmPMvTGqAsisWzuVWY00BSgBaXXUlKvqopbUQjdLX7DZdQzQTDUCFse1Yo0O001a7AhZWYyYaCBJ__dzgAyNrSjhAKawx47RaAL94_PhQbB-g6soD0xDDsttDSVshNdQCzpKJ6aeuXBBx6OW8VJUp1VEF0AbipoKsIbyrKNRPFBKJ1RMsX-KHVrCVJncJVYpWUIlOutumJ1ZKEIY1raDsGqiIZK02eLcak6-w6g6tywB_Afz8UYq9xAeI5b470EarPvKitZEWh5ZxKj16armQVJ6j7-GzRMpD_iJY-ABtStYM2WGyCHr76huWtRdBbw89YRzjtjXuO912eqGgdzAyQM87ZYmH1cFTz43GJxCuTbg49OpGeEcqS6GoaYfeFnrenhBPC8HJE2YNCNdvAjbGQbRACx96NRFcSK9ieN8IpRlRbgQr8ew2PbVUMiMK5l5Dv3k2o3CjPZdJkmoqoecpXYFwTRxlhCEIV31EwgfgF4GRGYQrKmoQPsAWS0UlxBrSpoKihjWzDx8EKPShf_LP_4U0iXCdQZstNmnVs3IXj5I12obzs0uIbDCS-NtOKC0pPvSPCmu0nXvM7PA-cQVo6Z96fOaRceiDGXqUltFr6Fec4qZr_2i2bN9gDlDWNXa2riAXZoibYDVoBqxogrXClGQZXJkk-ESJOFL57MD9H24qbobMehUnNivRaHrS_VTn2_-d_7D3n4a4qlMcoRj5PSs3a56yZJdEHmdNd_L2TecayEKJRWIh2y4D4GjqME_ymsBWP0mKq91XxvmPebf9B-_xHG6UJnCvrAQ_CjtKk8FxMnWMsrQOIS6FW8G-363tOLhNL9wG5Q87DMrBYTZ1GOY0T37Moe0yOMzHCZaSLIh8_IvXv7dXPrc-nte_8wN4o7miF8DJY6aKyUyX0irJ0_Q6JwcAhKsrFg9HzB8OTGtj9ODufWGKaaPsw6mVU2XPd0cS3ICyIzVQDmaUQxz770v5aChPqf4KmobIQBNNaVJU4uomkVX6tci6uzembEkNlMO_R2SjGU1SRu8cWUvzMqozqiu7mbgRZUNqoBxPKGMSZzi_RnlCaGiU9PsZ3ZCZwz4wS6bMypqm19cnV-a4H_SIeYc1LdSnL5h39PqidWW5uuA-aisee5_JbUSwNAcR0qkIEUrDED5cEjSb7UY0zwfRKdjgA1WtLbvzIfIfmlr8N1yN5arfX8zqSYM0myGN86ieDzSAuR6fqd0nqjquL2EX2899zM_gk3Fyup31-0fHshqiMymhkipOUJyMUW7pAfcrApWsfjZF0p6-qGioUqXsJv9CAheNYXNSPG4_NK8E6WKM1cPabRINx7lug3XBufi2Ebz6f9ZUt8jlXo8XtZA_V6sK0S9Ra1o7_i_1qEI06DEptxKSRrkfvY5t2TFebe3pmjv4WVPCscT6Qoyt3dZ_FKRvu3jWLxPo9buXjm418ffMB10m9VmS5XVOyjG0R3s-Mbr-KWVuMn_3aAcu4ZRLVpHp8nzB5Sr-c4OQ58Xu7YDNn3zrvSq0lqzsNFU_YzEf4yZVXa_SoGE01TAiaZK-qeHDSVPZYH5Vy_fQwliwZm_G2LaU3EwMS3cQI56JUcV19aYYn0X7kR4pd6fDYxX-aPG_O7sXn5TAxvA3Kbr2E61N3fvGGvIPUXWcfji0QuqhlrqJCobnoEIyVSGscYwvVLDH_tkc-LhQuOGk5jANiCeFXJTWKY2zMeKVqOhvtCncmX8_MVPSadrf6l_PvDPOHsmAc1LGRbisKhSPcW6kmX2a6hWgt4LoQAwQ8ynEyE8rOpXSDfrB1g3ubdKlmtc53SaHe6AvNKZH6VGJyyqj03XZAh7YHF_m3ewttreZiHqAA_xJ9eKTmkZ-DQkJdgdsHIzO-wsp8bOdTFbkCY92G2ZyWcHpPbSCR8GqG7FwMAcSaEYipjmGZ-FXwWc7O4yobA-Y8y-UaCE_HFr-KqNkWokaH5dblRxWkh2pvNxIhZOSIcpCmka51WTktO6PSHfSympb-3er55MKgjkvMfm6q5vp_O4G7pNnFazE4YCbav4kvxo--x7J3BOtGR0bAUbiaMmafb9quNi-dNjtyOkUBO5HiRUjO2XNewknxubGTkvMtDo3z9xhzs3DIOSo3ZiMTiqKl32g6wJQyvGhrDBA6SAVys4vdH4X5SvBiGZvYeogHL8xeu1di2v51DVbXFP-PNHy7bjd4rWSgzxkfDzPriqcbNP_dtlhJF-0WGqj4rU0SKaq-cHsyHiimg0bvlgez1JOZu9ZR2MwOdD4PtPilxx_9LyHXEpnqiCC6I-q8rso1XVJfhflR6amZzxvzcYvKdBiZqJ_ueF_U8U-T36NlkatQctspiVOk_ga7vXoelIlvFIeXIvBL9TyBsWI02dQL5-t4yUKQof0XI6c0dvZpLg4L7q2Sr9_AWKgvQCPJkWgX5IwySNoIL_7yM73MHIwe0GdV_kPvv-3XQaHaO6QRj7c7UyfndJY6t2I13cPQaPREOG8XMujGDrnN4iU8e7GHreFBaRSmrWlcBkG6377AEn_DLgPsOA3pp8gPTGTURWFpnIAKOsUhd4RagEVpZCNqnoz0rma77_Bo-YRND3Hn8PdVfdhlYc5vqP3QRpHmR-HQXD3dJ8HZenXOItjHCSE1FGA4gzXsV_XOMFJcMfukY9iPwt8P47jIFggTFFaE5JkJAlD5IPIpwfM-MI8GQsh93f2m6_7IEZZHt5xXFKu7BeLCJ0_J_IBQgCtzJ1-ajgLMjSYMunCrHzWlNgP8hCI13fy3n5uVnZ7BSKfM6XVAEMzze2nkq5zvP6OL-DME25j4OoRCBD66U-mAEJ3neT3P__NXC_h8R79JwAA__-Q0rVL">