<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/154008>154008</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang[OpenACC] crash with -fopenacc option: void *a = ^ { static int b };
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang:frontend,
            crash,
            clang:openacc
      </td>
    </tr>

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

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

<pre>
    The title says everything:
https://godbolt.org/z/bGqK59En5

Backtrace:
```console
clang: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = clang::FunctionDecl; From = clang::DeclContext]: Assertion `isa<To>(Val) && "cast<Ty>() argument of incompatible type!"' 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 -fopenacc <source>
1.      <source>:1:28: current parser token '}'
2.      <source>:1:11: block literal parsing
3.      <source>:1:13: in compound statement ('{}')
 #0 0x0000000004028478 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4028478)
 #1 0x00000000040258a4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x40258a4)
 #2 0x0000000003f6a0d8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x000076a0a7c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x000076a0a7c969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x000076a0a7c42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x000076a0a7c287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x000076a0a7c2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x000076a0a7c39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x0000000006e24b16 clang::SemaOpenACC::ActOnVariableDeclarator(clang::VarDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6e24b16)
#10 0x0000000006aa520c clang::Sema::ActOnVariableDeclarator(clang::Scope*, clang::Declarator&, clang::DeclContext*, clang::TypeSourceInfo*, clang::LookupResult&, llvm::MutableArrayRef<clang::TemplateParameterList*>, bool&, llvm::ArrayRef<clang::BindingDecl*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6aa520c)
#11 0x0000000006ac5f8f clang::Sema::HandleDeclarator(clang::Scope*, clang::Declarator&, llvm::MutableArrayRef<clang::TemplateParameterList*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6ac5f8f)
#12 0x0000000006ac68d0 clang::Sema::ActOnDeclarator(clang::Scope*, clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6ac68d0)
#13 0x0000000006712be3 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6712be3)
#14 0x0000000006722099 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+0x6722099)
#15 0x000000000672ad5f clang::Parser::ParseSimpleDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, bool, clang::Parser::ForRangeInit*, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x672ad5f)
#16 0x000000000672b22c clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x672b22c)
#17 0x00000000067ecaa2 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x67ecaa2)
#18 0x00000000067ed779 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x67ed779)
#19 0x00000000067f58cb clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x67f58cb)
#20 0x0000000006755eea clang::Parser::ParseBlockLiteralExpression() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6755eea)
#21 0x0000000006759f6a clang::Parser::ParseCastExpression(clang::CastParseKind, bool, bool&, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6759f6a)
#22 0x000000000675b697 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x675b697)
#23 0x000000000675b729 clang::Parser::ParseAssignmentExpression(clang::TypoCorrectionTypeBehavior) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x675b729)
#24 0x0000000006713638 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6713638)
#25 0x0000000006722099 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+0x6722099)
#26 0x00000000066df3fe clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66df3fe)
#27 0x00000000066dfb9f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66dfb9f)
#28 0x00000000066e79fa clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66e79fa)
#29 0x00000000066e8995 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66e8995)
#30 0x00000000066e8e50 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66e8e50)
#31 0x00000000066da4c3 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66da4c3)
#32 0x00000000049ca7e8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x49ca7e8)
#33 0x0000000004cbedb5 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4cbedb5)
#34 0x0000000004c3af5e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4c3af5e)
#35 0x0000000004db06d1 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4db06d1)
#36 0x0000000000db082f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdb082f)
#37 0x0000000000da74da ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#38 0x0000000004a321d9 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
#39 0x0000000003f6a574 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3f6a574)
#40 0x0000000004a327ef 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
#41 0x00000000049f4a8d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x49f4a8d)
#42 0x00000000049f5b1e 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+0x49f5b1e)
#43 0x00000000049fd565 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x49fd565)
#44 0x0000000000dacce5 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdacce5)
#45 0x0000000000c60ed4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xc60ed4)
#46 0x000076a0a7c29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#47 0x000076a0a7c29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#48 0x0000000000da6f85 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xda6f85)
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/eJzsW11v27jS_jXMDWFDor4vciE78b7d7aJBHfTWoCjK5huZ1JJU6pxff0BKij7sOM1ZdbEHZ4s2UERy-Mwzw-GQmmKl2J5TeguCFQjubnCtD0LePi2wlOK7uslE_nL7eKBQM11SqPCLgvSZyhd9YHwPvBQ46UHrSplHtAFosxd5Jkq9FHIP0OZfAG2yX_74LUjueQAc032FyZOWmNBmNAid5i8RXImSAiclJbayIUAbKYQGaFOWz8dFJcX_U9L9CtCGcVLWOe1fbOuqEtL0WGOlGd8vD8BLgyg20nJKSv1SUYBiXGsBUALtMC8FXkqw0gDFGymOAKWmDQSr70wf4KOAwLuDHSjgpZuaE80Ev6OkBN4KmkHTPqZtLbimJw2COzN9qhSVZhgEocMUBt76UQDvHqD4Gy7tjCgEKIQAIYvGWz--NO2mEct9faRcQ1FAxok4VlizrKSwUckFCAEUwQKzkuZL4KQPn-_T7T1UdXZkGmKY1XsoqaEHagEnRmP6UGdLYpTvuJxQzpSqqQJoAzHPYcs81AcKicTqALNXs6I1rCStpCBUKZpDJWrZvDYjsVKCMKxpDmXNoSKSVdrg3WpMnmBeH6vGMZwlcJIHKfYSH1-1V61biMpgMiywksoFPVWlkFSad8YGC9yRrRZa1vzJuCHjXTNc7PPvWBYLHy72cCGMRFxVRm6tq1ovFVwcjf5wsTjF4QKr40K9cI1PwLtjXNMSLgouFs9UZkJR0w4XW7hY7AlZaCFKcsCMA-_uKlLTWXFcqYPQcFEQUQq5yBnec6E0I6qZw7I7eS0qyjEhEHjrllzvHjipaxgbvfNSF3gpsu5PaimN_1RYKiqhFk-UQ4AiEN2Zn06K3hjumh8wKwV5giXTVOLSCjEBwEm9t0Z5ZhTj0Kguap5DpbGm1oWtS0cgWrVzowQ4xqyeA52T0_3xHRT7UTxYpOpFNQ8PknFtHeaxcbm47yTx951QWlJ8tAtqDRnXzfKK_7TnALRyTi2wHrY7gR3E2L8Ee11SzOvqC9-yPTdrPq65jb85LIURPi9IA6MHiYYgvSLETh7DtfGur5QIE9MbVP-HeV6aueKWt1GfNqYtSWWWqWP_NfK9Vn4UYgdHxEcBclp1SpYBtDnF4S70FyXj9Wmx53XTQJZKLMMGshnSA_bHApMwKQis9EFSnO-eWFl-TLod30sPpnD9KIR7ZSn4KGw_CnvB4VgwiqPCgzgzcfdDYu3AXmx0JtbNPizQzXqB8Vigl9Ak_JhAO6QXmAwdLKTIz9xwuCVu6RF_qShP1-vmRUr0F_4NS4azkpoNE0ushfG8wahvWNp9tt2U51oeLb4GvVnCo9ATYhwgh0zRfwD2lgizLacm_kzSgq57eKGtSxnOBj6-VHRrQ-wnXojz9s9CPNXVV6rqUrei-wD0e60N1lRK_PKVFsBbDyXTY1ViTR-wxEeqqfzMlAVgUo81zIQozwRelrRiPGd835nLjJ_TYo1Neou5Y4uRoIiLyxZrQtqfNdUcfM7Kh9W45wNN-Ajj3LniwX-OjnkVMVB7RbyRIpGLMuoNoTzYDGbw3GFjgqeFprLHmvI81VqyrNYmeY1_cCmezZB3VjWrD5qjir4-aiPkV8z39BNnevbY1VDSE-aPCUPISZJ3CftFiroaU_LQZHWmdVtRcjlENZy9BqpzBkaMf4zZ8_5NzPssiLXuuVv-dZxbVnvOgwnnOA-Kq4pu2bEqh676ljtepnZKxEVi36f-vEcT4H-c1PfMMy_phtae9HBCeoYQ-dHI8Deh-68kz9DTkxeNyaMEY3TdY7sD2xc5jbCjoNpvjNsjLstvlJigOtoUt_rYeQ_ya7sVvh8ZzKAfs87FqPBx68zKvuW3Zz-esJ9H0fUYfZn9vwvd81JlyOipGh8koiKISXYV-rq9YnilbCXyF4DiJrTNCtWCeYWKxqeGKAgoxVehrkpBnj43tyj3p0pSpRqrzozTIulxuhOcSRFex7nGSo_wDTqbNtvpN8bz4RYyOCuMjy5iLaSk9tLUHGRW9ICfmUm8pmPn9iyraE8DmtCQhUk0Pw1_F92Ndr3u3lT3CF0PQKn9NmCW01sMXNNuZlUi1AcINMl3XS_04n8OCKMDgqGkJ2yarP5zQPjpBwQ0zlXDvPAK-i7nX2T_can4xDWVzT3xzJnnu3ZMCaFKmTZWMDrzcm646JmKpkxlyfWj1GA5jwhjnJ1n-j-Fr6mX_Wy-sqQ_BaFxKhnSKCmub-b3p8aR3jwN_SyOZmXB6tmzkExYiJMkuMrCo6g-02daNveTQ_W_VPiPmj7oSRb9GgTtHd-FHLq_Uftd5HVJPx0rIbXNQmc_TzQKvqo__lRmWmngXFV_w6TS__Uc0KC_KBx_dwvDHPvk_KIw3T5OLjgN4vHdx_wHhQZMD3WUefoJwREdpSxrkdNfKE9tKGte3Z8oqTVtX818Qmgh9ABH6aFPMppno-W0kWZD5_kFhLNja2bvsfljbB4uAjomr5ntE1ca86ay5Jy_t5WZ2U9bhD3-Ufrl55kT5u4Qf4u0V-P5NZ2Jr6k5c4htkfW4RymMk2dOjApIiLs7Yja-iRh-Cjlg2SXA3Uek8Tu0hs-C5XPDb_D16KMxehz5OYYd1Wv30a75y7cpn45VeVGVyYcgI6NNdAc5fwJzyZ6pnHwkN5hGW7ePPeTmiSVjILRoE5qdtHza1maJNdUVtlqpLDNMnnYFH4frZuLWXdbuWhyPmOfT1XrRbkq3_URlZseGgAE5WjK-bzeBxqivA3Y7cjrZKhHgpRlWjOyU7d5SOOpsXuy0xEyrrnkiDpelcf_mTqttN13SyVG5IdwOASgq8THLsa0m6ahCcVdV8avILhgjmVZEBNGwbONS3UPT8rXmW1zQ8mXE5XW7zenpLdZXV_edqVtFdJRB_8-5heF6WWGpl86b9vfHZTtJ4eM4f5M1ay98tvd1VI4C9WSg6fDWlcCVrukoSRkoNlcGYBXunWiSohRB5tKP0vGryNTbXPwqss9M6REX1-Lvq-0rzIzZbUHSj9PXOshPJtHQ1JPoTUjMgzB4C_Dd4HmUAlzY-98i_y8kcdbs0xLT0-ZP9mpCaEtbl2t0sG3gSNtl__5OPF92YTH1iEc5nUNCh-Y-NFjnm7IR2k85rSxL8uSDFXZ2SC9wWlOWUN-Bu50Zs1MaS70bKPTDU1B_MEU8MWxYxAFshM9pGyO2mbTza0ilNHtF2rgRLNqUH5LWw5tKaWhrvOmJGbfJKXQ93-CqFYWLZ6gFVJRCNkjIzRxdIg4l1bXk1CwwM3JYzn6T33p54iX4ht66URD4yHWj5OZw6yAcFE5BCt8lsR8FYYKRgxFx4tj1My-6YbfIQYETu5ETB4mXLDMvInGUOQFOPC8IEPAdesSsXBr3Xwq5v7HF2bdu4DtOfFPijJbKVvQj1NHRqW_LxNemwWQ3_W9tt7ay2LwP7m7krS0Cz-q9Ar5TMqVVP6f9HwFmlmZssOpq-4K7tiTcUttXKzcJhKGqTY1SbKvmQXAPQbSy9cGMQMY1zCCI7oC3uqllefufl6q3hDzfon8HAAD__21UPS4">