<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/112382>112382</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang++] Assertion `(data().DefaultedCopyConstructorIsDeleted || needsOverloadResolutionForCopyConstructor()) && "Copy constructor should not be deleted"' failed.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang:frontend,
            crash-on-invalid,
            clang:frontend:fuzzer
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          yijan4845
      </td>
    </tr>
</table>

<pre>
    **This testcase is generated by a fuzzer.**

Compiler Explorer: [https://godbolt.org/z/j7TdET3Y6](https://godbolt.org/z/j7TdET3Y6)

This invalid code will crash on Clang Assertion Trunk, it seems that this goes back to clang-11:
```cpp
struct A {
  virtual A(const A&);
};

struct B {
  B();
  A a;
} b;
```

This is possibly related to [74581](https://github.com/llvm/llvm-project/issues/74581) and [42545](https://github.com/llvm/llvm-project/issues/42545).

Stack dump:
```
clang++: /root/llvm-project/clang/include/clang/AST/DeclCXX.h:871: void clang::CXXRecordDecl::setImplicitCopyConstructorIsDeleted(): Assertion `(data().DefaultedCopyConstructorIsDeleted || needsOverloadResolutionForCopyConstructor()) && "Copy constructor should not be deleted"' 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-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1.      <source>:8:4: current parser token ';'
 #0 0x0000000003bae128 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3bae128)
 #1 0x0000000003babdec llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3babdec)
 #2 0x0000000003af9048 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007db1dac42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007db1dac969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x00007db1dac42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007db1dac287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x00007db1dac2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x00007db1dac39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x0000000006b2a1ad clang::Sema::DeclareImplicitCopyConstructor(clang::CXXRecordDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b2a1ad)
#10 0x0000000006ebdcaf void llvm::function_ref<void ()>::callback_fn<clang::Sema::LookupConstructors(clang::CXXRecordDecl*)::'lambda'()>(long) SemaLookup.cpp:0:0
#11 0x00000000067bc9f1 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67bc9f1)
#12 0x0000000006ebdfc3 clang::Sema::LookupConstructors(clang::CXXRecordDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ebdfc3)
#13 0x0000000006e8e6ea TryConstructorInitialization(clang::Sema&, clang::InitializedEntity const&, clang::InitializationKind const&, llvm::MutableArrayRef<clang::Expr*>, clang::QualType, clang::QualType, clang::InitializationSequence&, bool, bool) SemaInit.cpp:0:0
#14 0x0000000006e970bb clang::InitializationSequence::InitializeFrom(clang::Sema&, clang::InitializedEntity const&, clang::InitializationKind const&, llvm::MutableArrayRef<clang::Expr*>, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e970bb)
#15 0x00000000069f427c clang::Sema::ActOnUninitializedDecl(clang::Decl*) (.part.0) SemaDecl.cpp:0:0
#16 0x000000000667ba88 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x667ba88)
#17 0x000000000668b4a9 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x668b4a9)
#18 0x000000000664b51e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x664b51e)
#19 0x000000000664bcde clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x664bcde)
#20 0x0000000006653473 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6653473)
#21 0x000000000665435d clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x665435d)
#22 0x000000000664687a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x664687a)
#23 0x0000000004507088 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4507088)
#24 0x00000000047c1509 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x47c1509)
#25 0x000000000474008e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x474008e)
#26 0x00000000048a70de clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48a70de)
#27 0x0000000000cdc07f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcdc07f)
#28 0x0000000000cd3d8a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#29 0x000000000454ad99 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
#30 0x0000000003af94f4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3af94f4)
#31 0x000000000454b38f 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
#32 0x0000000004510c8d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4510c8d)
#33 0x0000000004511d7d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4511d7d)
#34 0x00000000045196a5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45196a5)
#35 0x0000000000cd8f4f clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcd8f4f)
#36 0x0000000000ba8474 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xba8474)
#37 0x00007db1dac29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#38 0x00007db1dac29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#39 0x0000000000cd383e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcd383e)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```


</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzkWtty47jRfhr6BkUVCZ4vfEFL1v6z_2zNZOwkkysVCIASdiiAC4AeeZ4-BZCyCEryYWNNksqWd0zj0Pj660Z3gwRSiq05pddecuMliyvU6Y2Q14_sd8TjPE6uKkEerz1YerC83zAFNFUaI0UBU2BNOZVIUwKqR4BA3f34QeWsH-wFCy8Y_p2LbcsaKsHtrm2EpNKLSuAlNxutW-VFpQeXHlyuBalEo2dCrj24_OHB5e_ZPbm9j_6ResnCg_nrh8NivLzFzfgDahgBWBAKvrOmAVgitQGCg3mD-BqUSlGpmeDgXnb8mwfngGmgKN0qoDdIA23ErAVVoEL4G9ACYDPRD0ODqV8vDfof3LZ9i9KywxqUwMtu-hYAHpjUHWpA6cEcC660ebKgo2GMly0Oz2M5N2M5Nx7Mx7MAKAEaywDV4a89smNiFGiFUqxqHoGkjTWnFsY8WZzk4Unqmd501QyLrQeXTfOw_-W3UvxOsfbgkinVUeXBZS8EFgBxYoTGMImTf1VoLwQWs7E2d9qYhXTb9tge_Z_WXh68MT_GA-FSCqGP1xnGLRnHTUfoqKW8u_fgckFxM__6dbbxojLPjPnBgzC-ZUdFpReV869fv1AsJDFj-yZF9Ydt2zDM9Fy0j3NjeWNUIT-oBW2opmRv0HLkjQY9zAnSqO-dLWiNukZTck4K8LK5l80Bp5SoTw9UNgKRL1SJpjMSl0JOZg7LwgJYP0yBB6EZAvBhDFAb0TUEcKFBRQHZA4YezECNWEPJYI3PH2_Lu1ugumrLNECg6tZA0lZIbfzqzxvdetBgEqA3dNjAZjNqiTA1O7aVtJUCU6UoAUp0sm82M5FSAjPr3rLjQGHJWj076zrBzAuKz1KsJdoCJNfdlnKtBrcRrXWTIaz5dB_WBkfx0d56ytd9MFlWjB_8yHgg8NfkO5K1HwN_DXxh5KK2NdI73XZ6poC_NVwA39_lqY_U1lePXKOdFy0Y17QBfs2F_0BlJRQ1_cC_A76_xtjXQjR4gxj3osWzeM1gxVGrNkIDv8aiEdInDK25UJph1a9hmXaavWg-0Bvd9oSFhjCnOSpzLypjwxnupKRcgxZJRSXQ4hvlwIOZiU8wG8KXB6MABLtg_19UIRrCHFi_6LfQo-ofPkvGtbXafW_6_DBIou8robSkaGvdeQ4Y171z5-9kOw_eBLsB3lOyMfjDCf6KUHwK_7yhiHftJ37H1hw1Hsw7bhMxAY0wq1wCrQHjoIUOWlQXQZyDubG1iV0PVD728P4PcdKYRfOBSWfMXHBNd3pmcl5UBvb_pyWiYYmMVCFBOIYJDAbVGlZ5cLnL01Ua-w3j3c5f867vwDMlZqkFbqc4sGNXZpEWNQat3kiKyOqbSe1vWsDOdxZIpqDjLAVrZbl4K_g4Sx3ZqSsb5lkdAVSZ6PgmyXaiIzk7khxWb5YZVo7M3JUZFbRI3ybTTnFkFmOvSyuIQuSkzju6Rf2TyZ1I0jNZ01RP5xKuKUHffQsNWA_VJYxCJ2CltCIY1X0xcNj1dcexkb-StPaiue3dZ_rbfghGTWMS2armXjQ_ScZHIb517Uh_9SIBfYcHswZtK4JMpH1aFub7QGOW6IUfb2GjohPT0qzCRR2etpfs-N-Z3tx1dc0wo0OEvmv7CD2eYnPER4GR4cWE6NeydQGr9ho5VoVTq9Y4Oq3yn7DKuyvQ43MUiFwFcppSBO6lUy5yphlq2I_BBvlUvz53jlqfZlByyzXTQ334zEAr-v8ZJ87Ig61_6zSqGlpKiR6_WHOPpNzuWmkYM1Z3xP-lQ839Y0tf1-yCuaN_dJQbf7RQKiGaw-9-L5gJp3dC7LJaZEFVvWKpCXlLaard_3C6p8S8u89a8hyfTRx2izqGGT696UqsP_G_cnYgqN9dY07d_TZrkdSzYG9i03naxKkDIs0qlOdjEJ9tATt67nOUZb6sNZX7v4UsOSm1lqzqNFXH4PpBx9Y8WoHc021rzuUfeC3O-cB41lLIL4ivqfGLC4WcnhjHfJnLXF7FqHiRuV-k6FqXG9PH-Nr03rWmYJ2qeiBvqDxPUeFQ_zaKj8dP01X5bybfcuuQn7vkx1US0hfJ_ySXQ65d0PoD11T2R5G3c_niiGcNWmJzYDd9rGaGkQtQZhlxKCumlGHyMmXDTneYs2FomkEvQtzU734OcZg4xEG35E2TKM6iZ4m73fWuNSLw55B1ATqstg4d4YSOOErIs3Tci_YjfaDNcc761KI_OvpZSzczPwVKm7NvT8Snp8z4myBdYw5MQpriW_d1ziV4MGo6PMDJfkrzDB3xYN-fnil9Ll1y9JAczE6ZHCdBFrjZfi4I_YXy0m71fZlEcafp0GTPJe-NdADiIHVKzzjDYRI42XUpTS7k5ATUC4HsMTggExdkHAQ5densl_3AlUZPlfGU0fNaXcSXB5yOIk4VGOcoC9zcMEA-6PPwVBvkz-l7kaA04HMUcIqxABMcZDXAOFxtkZExels6PgxskNzXl0_HLqcNzu27jcvo0aN01MgnakQkR2BP_jy8t5FipMzdFjXN36g93m7b5qROkzORkTHUkaPaugBEsgcqTx4SYOGGjRiRonjPlz792oMPzcO52G4RJ9NNfdKGSg_jRGtWR4aDET9aMr4e0khv4KcJqxXe7fpvmVFZIcXwStnhA4vOYNOw0hIxrfbdE3GoacyeEHLUb4aUhxBvnajn_FUvqn4V1Ul7TL4aoLqI63hkilNvq_ueLx2_QzVtHh06f_YbqAHx2PPdDwlxEldRXoP_ZReZnOLP-gJ0iQsDnJOzxFnboaOMuWfTCeaTiWbAucP4M0NLp9gZ6fa-BYRV23GoSakThiR7My-_ikqdJ-VXUX1kSp9593Qcmp_8oEXMuID9tvR6Hgdn-SlsGrIcNuMJm0WKknPIF6Nnp3A4UTGcs8JPZPMC5aylx-EvmST2vI6H8LavUPb4bVgph6Dwctp-95rEIHOgO7VhUKE8zmJgQL_32r1oZ-3pJ76CFG_8mmqnODLzqUwaB2C1MtNWSiOpVyPlXr0Kjd1Vimkll0cU9PLf32ZG-NPqk0s_VEph75_ZdlAPJwyAhx3RX2UB35neALpjur8wFkaxgdkpCvwHoAVQlAI2KvuLyU03SXUnOTV70kx-5hLWFbmOSBEV6IpehxksgiBNivhqc52lqMIJrao4gFUIqxiTIKniAMUJpQRnV-waBjAOgzAJkyiN4lkcJkmYkigNcpphHHhxQLeINTOzb2ZCrq_sZZrrMIRRDq8aVNFG2Zt_EO4DxZ4Qe7Nnbjrs3Q_B_eEG3aFjOsNUTj9-GJNBL1lcyWt7k6fq1sqLg4YprQ5ANNONvXQ4Nk-y-O-893TVyeb6z19sGszxcA3_GQAA__8ewr9f">