<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/120082>120082</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang crash on x86_64-linux-gnu: Assertion `Value > 0 && "Value must not be 0"' failed
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          bi6c
      </td>
    </tr>
</table>

<pre>
    Compiler Explorer: https://godbolt.org/z/9KqosxEdc
```console
<source>:3:47: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'const volatile void *' [-Wint-conversion]
    3 | _Static_assert (__atomic_always_lock_free (0, 1), "");
      | ^
clang: /root/llvm-project/llvm/include/llvm/Support/Alignment.h:77: llvm::Align::Align(uint64_t): Assertion `Value > 0 && "Value must not be 0"' 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 -fno-verbose-asm -c --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1.      <eof> parser at end of file
 #0 0x0000000003c56df8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3c56df8)
 #1 0x0000000003c54b04 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3c54b04)
 #2 0x0000000003ba2068 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007e8f0de42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007e8f0de969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x00007e8f0de42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007e8f0de287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x00007e8f0de2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x00007e8f0de39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x00000000077a80cd (anonymous namespace)::IntExprEvaluator::VisitBuiltinCallExpr(clang::CallExpr const*, unsigned int) ExprConstant.cpp:0:0
#10 0x00000000077a9322 (anonymous namespace)::IntExprEvaluator::VisitCallExpr(clang::CallExpr const*) ExprConstant.cpp:0:0
#11 0x000000000774c78e clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#12 0x000000000773bc16 Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) ExprConstant.cpp:0:0
#13 0x00000000077444eb EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#14 0x0000000007747358 CheckEvalInICE(clang::Expr const*, clang::ASTContext const&) ExprConstant.cpp:0:0
#15 0x0000000007748a2b CheckICE(clang::Expr const*, clang::ASTContext const&) ExprConstant.cpp:0:0
#16 0x00000000077492df clang::Expr::isIntegerConstantExpr(clang::ASTContext const&, clang::SourceLocation*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x77492df)
#17 0x0000000006adcbee clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, clang::Sema::VerifyICEDiagnoser&, clang::Sema::AllowFoldKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6adcbee)
#18 0x0000000006add712 clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, unsigned int, clang::Sema::AllowFoldKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6add712)
#19 0x00000000069fca24 clang::Sema::BuildStaticAssertDeclaration(clang::SourceLocation, clang::Expr*, clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x69fca24)
#20 0x0000000006629d24 clang::Parser::ParseStaticAssertDeclaration(clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6629d24)
#21 0x0000000006618009 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6618009)
#22 0x00000000065d6e47 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x65d6e47)
#23 0x00000000065d7ccd clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x65d7ccd)
#24 0x00000000065ca20a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x65ca20a)
#25 0x00000000045e0668 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x45e0668)
#26 0x0000000004899a89 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4899a89)
#27 0x000000000481c48e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x481c48e)
#28 0x00000000049862ce clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x49862ce)
#29 0x0000000000ce1c7f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xce1c7f)
#30 0x0000000000cd971a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#31 0x0000000004624ad9 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
#32 0x0000000003ba2514 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3ba2514)
#33 0x00000000046250cf 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
#34 0x00000000045ea3dd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x45ea3dd)
#35 0x00000000045eb4cd 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+0x45eb4cd)
#36 0x00000000045f2a45 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x45f2a45)
#37 0x0000000000cdeac3 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xcdeac3)
#38 0x0000000000bac364 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xbac364)
#39 0x00007e8f0de29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#40 0x00007e8f0de29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#41 0x0000000000cd91c5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xcd91c5)
clang: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
Code:
```c
int *p;
_Static_assert (__atomic_always_lock_free (1, p), "");
_Static_assert (__atomic_always_lock_free (0, 1), "");
```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzkWt2S4jYWfhr1jQrKlo1_LvrC44ZsJ7OVrmEqe0nJsgzaliVHkhl6n35LssHY0Mx0QrIXm-rUgC2d851P509CWGu2FZQ-gsUnsHh6wK3ZSfVYsIg8FLJ8e8xl3TBOFVweGi4VVSDI4M6YRoMgA2gF0Gory0JyM5dqC9DqPwCt0l9-l_qwLAnwMhB53R-RQktO7aMg17JVhIJgCYIsAEEWxlYuVUo6BUwQWTfYsIJTyIShW6qgkbCR9ouCRIo9VZpJARtrgthCgGImDECxG4cVrqkdKSto3hpqX1sABu4lx4ZxCveSlRCgzE4Bi0-zfzFhZoNgsHgCXgYhhAEEcQ43a4MNIxusNVUGApRsNtjI2j7i3_Cb3nBJXjeVolZZ4gGUQx-g1P4LEHJ_KQg-9UKhEwoWS-BlhGOxtWYDtFJSGoBWnO_rWaPkvyk5fgVoxQThbUmHB-u2aaSyIzLOtqKmwsx3IMhiR6cbFGQgyNzb848oaZkwUbgxDlUGM2eWJRRE3m-YtxSCYAk9CFAEUGRN6J7WrTZQSAMLCj1nVQwrzDgt58DLXj4vs_US6raomYEYFu0WKmox2mWZ-A0zu7aYE1kPBk3sZlq3VAO0gliUsDcfmh2FRGG9gwUmr0ZhQi3LjaKNkoRqTUvYOxjK3UystSQMG1pC1QqoiWKNsXjXBpNXWLZ1Y2F5mTcHXvqi5FbhGmK1bS2lul8b2VhMpI-IGT1GBFq5FZzhI4d6ZlQrXgFaFUwcX8PZtvyGVTUL4WwLZ9JKxE1j5bamac1cw1kl5GxPVSE1nWFdwxmBs9mWkJmRkpMdZgIETzeR2MFa4EbvpIGzikgu1axkeCukNoz0Ohx7o8ejmPQy3_IAgpzKyrpBg5WmCmIDqShtTFXMRTIEKPCgd_CO_wVkEZVVcuZ6-k13H14UE8bx_bVbsWQYpPC3jdRGUVw7f8uhi-XURtKfJh6gT96hB2a9vYPtT2CHhRdeg51zikXb_CrWbCswt5EjXM4sIZdW-H1BWhgDSDQCWWDkRQnM7eJ9oUTuqXrrUP0Di5JbXUnP22hMLoWhBzMnjfVyz_3fyQ96-TFNKq-kIVogrzeHswKg1SGJNlE440y0h9lWtN0LMtdyHjnIbsoAOBwLTKO0IrAxO0VxuXllnH9Mups_SF9M4YZxBLfaUfBR2GEcDYKjsWCUxFUAcSG7RP_jYt3EQWx8IdYvPizQLwaByVhgkNI0-phAN2UQmJ47WBzjxCO2KCZYSPFWy1ZDgWuqGxewaRcRz8IsD41a7jFvsXEFGwTZb0wz86ll3DCRY87tEICSY22zkdQ_ha4Qu8qbw1Mw9Y5rB-T2PRZTh7VB603wpgFCfwLvDwP9LjB_DCwkcULhmcy1qY1TKdUnrCkI8iHX1PiVbpyuTWNU1zB8zCKUw0JK3vVTR-PGRlkAHzEIjQ0KCuJHsNdIx6KzF9ca9Jn7O9itiGdRyX70mZiPUh5MKA9DWpwQZvpLDyq5F6DRu3Obv4s0nCCNg0UC8x0lr53y53w5ZvSm5vXXPqEfR_wIhMUEQoJR0UH4G5RHE-UpKqsp0d0npp-7bv8o7TI6r0IYgVy7RuazJNiW296Zuu7_bqW6t6LLpNbG-NzGCJekoOMEQGvcBydVrHq7YifVbuNxsRj9Mpy18y_rZ3FldS505Munrsezxl3QdBqdcS6_rSQvf2GivGtH0xMx0JRMaCpjH_0tNI0Lzf-CCGvqQMSo8to2B6PwOihbVMtu99nt0p4o4Vj1zp3ccPyLbHbpMtefXgpy5eWuhHQmnwhBo9IeRSgtx4S8uD3I2ec_REl0XyM6mIMR_tgIP_G89KYR7wI_vpCqz3bfWaJpdDvpZWaMYkVr7Cb64yOuJtI7kufoGcgbtRzRooxoGN8kb3kwVAnM3yXxHiTYEUxsrY51Q8ndWejsHFgIJizEhJQ3Wfgqm890Tx0LY_N_bfDvLX0xCgT5xLV-UrJtvlC7u79VGf4py5bT57qRyu7dDb17BHUGDuaHY_MJRh6-MD9bf52EuUXc2dFlqr8iY3VgBqijnipcUC-KknOouSzpT1RkxDlmn24paQ3tH1lkdwTYQxgAjvquMElTnIyy0UrZ1CLKKwjvjq3TPmCLx9h8Eo43TMeD52dX-Am9zt_7xtzZT3uEA_5RIxOmSYQIHRdWh3QwY39Ko8ktM--cXnpkA-5R3-ER6pO4goT4mxrbqWeHcplS-M2liJzs8NmWwKaMHI6fodwdqN8bfofvhH582OiRMo19DI9U5_5XF_NnNqxrzPlvlBipnuuGXzUlGneNVsa1PU6p2J6qy93N-CQxjFCIy7T7dWEQWrXCueVGOT773x5cqB737ARzXmDyuqnEOF13int3yf1c1jUW5TRar66bNv042VjtmI_OHdZGMbHti0C3qKcJmw05HHy_-1JgzchGu-E9haPB9sHGKMyMPr6eiMOcW_eX6uy9HZINmXrYpXVTAIo5rosSAxQPVKHkeOr6syyuLMbFienCPz_WvXYu2r350oo1rih_G3F5e93uevbbYR1cPZi41cIjo03z_51bWK7nDVZm7r2__uGkJuOgLN9lza0Xvqh9RypHiXoy0Q547_zhxtBs1KTc_VSiN3hwommLUoTkw3T8LAv9Phc_y-Iz0-OzmFv597T2DWZ22S-34zfp6x3kLybR0jSQOG6jFhXC4eI9wE9nn0ctwJXa_x75fyOJd-0-HTEDbfGkVlNMgg7isdc4wnaJI7s4v3mvEt-vu3CYBsSjns4rMAmiEFqs91PZCR1UppOfiNIy_eAvcG7KSWDoTQXS0IObjZ2z0QYrszkz6IdV0PBMhT9twnyygJ3we66NFdspPV2QOF0Q6X5Rr_qWH5Lew7uLCPAbMztID8y6TUmhH4QWV6spnO2hkVBTCtlZQ251nC66KGpaJagNMDvz_AqLG1a6rcj5xRbgZUxY07Omu-Dxwbsivru9cP2uyB2vnZwAP5SPQZkGKX6gj34chMEijsPoYfcYVAuC08JbRMEirPy4DIOqiCn249RHoR89sEfkodBHfuSHHkLRPPa8yE9wsChJEAUoAKFHa8z43EbxXKrtg7vC8egjz0vQA8cF5dpdNkKoX2sEFk8P6tHd_CjarQahx5k2ehBhmOH0sVvy7t6HFPDCae9zieWhVfzxj99T6e3cP6L_BgAA__8IB4RR">