<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/111295>111295</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Clang] Assertion `ValueAlignInBits <= AtomicAlignInBits' failed.
        </td>
    </tr>

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

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

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

<pre>
    Compiler Explorer: [https://godbolt.org/z/8o4K1GGjq](https://godbolt.org/z/8o4K1GGjq)

Attempting to compile the following program with Clang Assertion Trunk:
```c
typedef __attribute__((aligned (8))) int alignedint;
_Atomic(alignedint) a;
void foo () {
    alignedint r0;
    r0 == a;
}
```

Stack dump:
```
clang: /root/llvm-project/clang/lib/CodeGen/CGAtomic.cpp:67: {anonymous}::AtomicInfo::AtomicInfo(clang::CodeGen::CodeGenFunction&, clang::CodeGen::LValue&): Assertion `ValueAlignInBits <= AtomicAlignInBits' 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 -O3 <source>
1.      <eof> parser at end of file
2.      <source>:3:6: LLVM IR generation of declaration 'foo'
3.      <source>:3:6: Generating code for declaration 'foo'
 #0 0x0000000003b99d28 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3b99d28)
 #1 0x0000000003b979ec llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3b979ec)
 #2 0x0000000003ae61f8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x000070630c642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x000070630c6969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x000070630c642476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x000070630c6287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x000070630c62871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x000070630c639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x00000000040f3d76 (anonymous namespace)::AtomicInfo::AtomicInfo(clang::CodeGen::CodeGenFunction&, clang::CodeGen::LValue&) CGAtomic.cpp:0:0
#10 0x00000000040f7799 clang::CodeGen::CodeGenFunction::EmitAtomicLoad(clang::CodeGen::LValue, clang::SourceLocation, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x40f7799)
#11 0x000000000435a540 clang::CodeGen::CodeGenFunction::EmitLoadOfScalar(clang::CodeGen::Address, bool, clang::QualType, clang::SourceLocation, clang::CodeGen::LValueBaseInfo, clang::CodeGen::TBAAAccessInfo, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x435a540)
#12 0x000000000435b37d clang::CodeGen::CodeGenFunction::EmitLoadOfLValue(clang::CodeGen::LValue, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x435b37d)
#13 0x00000000043c88d6 (anonymous namespace)::ScalarExprEmitter::EmitLoadOfLValue(clang::Expr const*) CGExprScalar.cpp:0:0
#14 0x00000000043c1912 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#15 0x00000000043c1b4b (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#16 0x00000000043c8d2b (anonymous namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*) CGExprScalar.cpp:0:0
#17 0x00000000043c000c clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#18 0x00000000043c1b4b (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#19 0x00000000043c8d2b (anonymous namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*) CGExprScalar.cpp:0:0
#20 0x00000000043c000c clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#21 0x00000000043cd306 clang::CodeGen::CodeGenFunction::EmitPromotedScalarExpr(clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x43cd306)
#22 0x00000000043cdeba (anonymous namespace)::ScalarExprEmitter::EmitBinOps(clang::BinaryOperator const*, clang::QualType) CGExprScalar.cpp:0:0
#23 0x00000000043ce595 (anonymous namespace)::ScalarExprEmitter::EmitCompare(clang::BinaryOperator const*, llvm::CmpInst::Predicate, llvm::CmpInst::Predicate, llvm::CmpInst::Predicate, bool) CGExprScalar.cpp:0:0
#24 0x00000000043c0e3e clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#25 0x00000000043c58ac clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x43c58ac)
#26 0x000000000434e8be clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x434e8be)
#27 0x0000000004374b85 clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4374b85)
#28 0x0000000003efb405 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3efb405)
#29 0x0000000003f03114 clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3f03114)
#30 0x0000000003f6b5b4 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3f6b5b4)
#31 0x0000000003f7d59c clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3f7d59c)
#32 0x0000000003fe5f4a clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3fe5f4a)
#33 0x0000000003fe0c65 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3fe0c65)
#34 0x0000000003fe121b clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3fe121b)
#35 0x0000000003feb593 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0) CodeGenModule.cpp:0:0
#36 0x00000000044f2e26 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#37 0x00000000044e3a08 clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x44e3a08)
#38 0x000000000661af54 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x661af54)
#39 0x00000000044f0998 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x44f0998)
#40 0x00000000047aa2e9 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47aa2e9)
#41 0x0000000004728c2e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4728c2e)
#42 0x000000000488fb6e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x488fb6e)
#43 0x0000000000cd801f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xcd801f)
#44 0x0000000000ccfd2a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#45 0x0000000004534669 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
#46 0x0000000003ae66a4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3ae66a4)
#47 0x0000000004534c5f 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
#48 0x00000000044fa59d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x44fa59d)
#49 0x00000000044fb68d 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+0x44fb68d)
#50 0x0000000004502fb5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4502fb5)
#51 0x0000000000cd4eef clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xcd4eef)
#52 0x0000000000ba49a4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xba49a4)
#53 0x000070630c629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#54 0x000070630c629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#55 0x0000000000ccf7de _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xccf7de)
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/eJzkW11z4yiX_jXKDWWXhL4vcuE4H5vZTHVvJ9V76UKAHKYl0AJKJ_vr3wJkWyh2Eqc9807NO5Xpivk4PM_D4XAgGCnF1pzS8yC9CNLLM9TrRyHPX9gfiCdFkp5VgrycL0XbsYZKcPXcNUJSGcQLEKQXj1p3KogXAbwO4PVakEo0ei7kOoDX_x_A60Ik_x3d3Pzxf0F6GcDi481hGYSXQbhw_y60pm2nGV8DLQB2YIB-pKAWTSN-mopOirVELfjJ9CNYNoivwUIpKjUTHDzInv8wAzujWeh-sPusXzpKaA1WK6S1ZFWv6WoVwCKABWqMOgQEsCgMKPsDGNdgqGFcB_GFs7NaaNEyvOtmKmEJ0LbFk2AE1EIAa70EQT5UAABGFoEMt11MjQxBEF8G8eXIVJBfTtiMFbvXCP8ApG-716zdR2wkstMIr6UQOoDXTfPUzjop_qDYfHQt4HXDqgBeLwWhN5Sb324czznujPUst1byC8QFf2lFrwy0eBHEC9fultfi1WdYbAAE8WJje_zhuufYzF0AswAuwaHWd99R01PbqDQ4dnMeZKGtWxhZb_kF0woE8dKo6HCMKgKYgxqxhpK5U-fr3dXi_gqovmqZBghU_RpI2gmpjQdO_Jjpx76aY9EOGr6WkinVUxXAa4A4AYzjpifOgbFE6hFUCP_QEmFqqHaSdlJgqhQlQIleumLTEyklMEOaEiB7DhSWrNPzg1MezoOw_DosDCTXfUu5VsOki85O8rCyZ3SzsoeJn6GNkmqm7fKB1xXjm2owW5OfSNazBMzWYGY8-hp1nbHb667XcwVmrVEBzGbPRTZDqp2pF67RcxBfMq5pA2Y1F7MnKiuhqKkHs3swm60xnmkhGvyIGDde_xZS01hx1KlHocGsxqIRckYYWnOhNMPKjWE19ou_xMYXBnHjKydXZOQK4iUVdRBfgQ5JRSVAGlBOgKhBzRrqWsKh5c5AvIjNWjDa3t19_x3cfgNryqlE1hdFDQjFDRo-BjCvhQhg7qzFb1m7GazwNcCCmIgn37IFAhiHIHwON__FVVkSWADrmHbJqBflfvkqGdfWbR6c7xW7RhL9XAmlJUXtsAKHYGYj1y86TwAvwucB2DbUG-TRBHleUrwP-bKhiPfdF37P1hw1ASx6rlykboSxf1qcBoaHE3o4Ec2iugBL42bfKBZPVL44YP-FOGnMcMWgntdmKbimz3qIo6H9fztEPAyRh1kc4iyBKQwHUi4gPxfZKktmDeP982zNe1eB50rMMwvcdvFgJ77NMitrDDr9KCkiqx-saY4bwPb3BkinoJM8A2tltTgWfJJnnu3Mtw2LvI4BqkxIPsqy7ehZzl9ZjqqjbUaVZ7PwbcYlLbPjbNouns1y7HVJWMcktza3Gy_gqKWqs2u5_LdswWCSHIyc2izvcMIgz8vyoN0pClt41TLtRrgTiLzBYYPKw31vI-ydwMjxOkxqsV5bA_eNOG3YG1jvMlwYR17YS-IUpUl4vCxGkC_1PUYNkm8IsyBEUqUM-UqIZiLC__SoeXjpPi-c0_0CKeqc7HDLh4vFYoFNnrNp6fCcUmynpSc2nIhdxTn5rNgbJ_s1LzwtYcPHIxz7hHFRkHfDhvOiq-dOGrLaHvjeZW6aAyy40gFcuGBgipyt_QEhmWCLygh6UulWf2eKaSGNS5kkSRNXhQhZdcKkktLoezQhuBxlFgObhUu-TIEZ1KdnsHyYWDolViXVJ0XfA8W0-TCUbDr_BP4SlCVS2gHw3H5b-kFY-QRWGIb4HzH1xd9n6su_5dTD8B869XCykWMSh9nxe8tXKVqhKdmhfzPOHti_T7qrWCbjXQXCKVVaoV_YVS4Y_9Ipn-cF40i-fOnM-Vd8iPH7MzTdDGlapr8AeynaDkn6Ydw731u23a0pH07ilDCMND1lm0029b4o0104pDH9R6zH6S6cFggfvx4_vA7_hPzVQvYW3mQ7T2hR0U-cofjLcYHljdPRn0Lc8vKITxKGPKmK9Hjit2suJCXvkj8pGYvVI-MlCTGtqyT8BBm3GKbL40DEWUiJXr7ROoiXow4LrUe046vT3p05Yh5zLyeJ6zCOouR45ibwip4Tw_d_mX4Uvb7Hont1Ftu12pDMDpx8_5rj_0B4rMjkvrbOqrT6hCKbkgtBXt70iZOysWA9Nv4dbp2TtDwy5g5X3tRU-kxuGlGh5pLixnft3U3Vm2FrebNpeMtrMXKIk0piGXuS-NfFNU3rBL0nye-C9A3dTa-jvsF_SWvGmaP8EYFc-XZ_PS1hy8cjHE8Ihzh7N7rtJ_z3Imp4eESTCdEIRtXniB6md1oKBqFHIZ1QqNIyPpbCg-ju6BMdAI-JuJLNRMw7JPU8tMnb2NLe7C32M52khhS-e3E1mHWp923bNa7Y_SHmbZg3UvSd2R9hCRysi541hO7PLWM_HUlojMJirNsFwj8oJ0vBVd9uzgzH4jhdDuIAejPv5SBZFqE69fadr0gqurh_mOwmtEWTXfTk6d8AxkNbTrwhLMtij58uxtviM8W9pkPR8OTidIpaCGOMiX-xkSMEqff3jWspuKac7AF5cnhudA-efz2RwwLDydHBDWgOlIhjul_Fw3xOvJUOCD0K_rVDUdRV5lEYwO6YPG2v2aeJocf01Cm_Q-ZB9zbFEJMijGqAcbRqkeld7M_UH9EkPV8CvwwuwZNg5NQMHD6PQOITwDWBCGwEX0YPNgqMaNy3qGm-U7yNxHvYZP72bWwMfxb30jMi2dOBQJz4h_w0TrKstJKM7NZD3rSSVlVb61bc9q4Bo6apEP6xqrl_QnJjD36zjJaibREn08W7d_a21ySiM6Mjo8FIHy0ZX9uWV8PUbjusVvj5OYrchwophlfKNh9U9BqbgpWWiGm1qZ6YQ01j1oGQo3rTZHRtYd3HaW67BDBvUFsRFMB8JxUsNg8sfhPV_vnIpo8jMpSML6z2PIFwNd96fo9q2rx4cr49dSfNjhxWz-fzqXPhtAb_yc4xSeMOekEx2a5RWpKDwtlZQ6_2xI2aXuiedDQNvKP9x5ouvBRmxO1kyYEh7LnSNIGpsuJoRX4TlTosx2-iumPKv-l4KxxvPaBDzEy-faT0cQUHN_mTdTQyjXVM_SQrDWFdpYcwX45-91KDPTnBIf3_Qh1PmYE4YTzlokkGklA6BLNNDrJBboPI4tUV4qHt-YRZh8HkgfYyvrBCSYkSYOCeblRn1Bt18vwOlqQ88vmd7eLZTKY2aRKC1cp0WymNpF6NaH14FOq_b0nTaZaWEwqc_RPOkzW7HXfj6YBKKeyXA2wJqIfzAcCDz7tH1u6RPn1m2r1pjeLEQOsVBbMnoAVQlAI2St2HYbZfQ5BU95JTs-pM58kD9zNyHpMyLtEZPY9yWMA4ipLk7PG8TrIqrHEW5lGexzWBCYVxiuoK1iWqw_SMncMQJlEYZlEWQZjMK5KnVRRVYRqSjJRxkIS0RayZmzUxF3J9Zp92n0dRBMv0rEEVbZT9LgWEg1owSC_P5Ll9EV71axUkYcOUVjsTmunGfgHDfm0hSC9__RX7WS-b888_Ux_oPJ3DfwUAAP__H5JR_A">