<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/117685>117685</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] Assertion `SuspendType->isVoidPointerType()' failed.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang:codegen,
            crash-on-invalid,
            regression:19,
            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/45vcnEsse](https://godbolt.org/z/45vcnEsse)

```cpp
namespace std {
template <class Promise = void>
struct coroutine_handle;

template <>
struct coroutine_handle<void> {
  coroutine_handle() = default;
 static coroutine_handle from_address(void *) noexcept;
  void *address() const;
};

template <class Promise>
struct coroutine_handle : public coroutine_handle<> {
};

template <class... Args>
struct void_t_imp {
 using type = void;
};
template <class... Args>
using void_t = typename void_t_imp<Args...>::type;

template <class T, class = void>
struct traits_sfinae_base {};

template <class T>
struct traits_sfinae_base<T, void_t<typename T::promise_type>> {
  using promise_type = typename T::promise_type;
};

template <class Ret, class... Args>
struct coroutine_traits : public traits_sfinae_base<Ret> {};
} // namespace std

struct suspend_never {
  bool await_ready() noexcept;
  void await_suspend(std::coroutine_handle<>) noexcept;
  void await_resume() noexcept;
};

struct task {
  struct promise_type {
    auto initial_suspend() { return suspend_never{}; }
    auto final_suspend() noexcept { return suspend_never{}; }
    auto get_return_object() { return task{}; }
    static void unhandled_exception() {}
    void return_void() {}
  };
};

namespace std {
template <>
struct coroutine_handle<task::promise_type> : public coroutine_handle<> {
 coroutine_handle<task::promise_type> *address() const; // expected-warning {{return type of 'coroutine_handle<>::address should be 'void*'}}
};
} // namespace std

struct awaitable {
  bool await_ready();

 std::coroutine_handle<task::promise_type>
 await_suspend(std::coroutine_handle<> handle);
  void await_resume();
} a;

task f() {
  co_await a;
}

int main() {
  f();
  return 0U;
}

```

This goes back to clang-19.

Stack dump:
```
clang++: /root/llvm-project/clang/include/clang/AST/ExprCXX.h:5165: clang::CoroutineSuspendExpr::SuspendReturnType clang::CoroutineSuspendExpr::getSuspendReturnType() const: Assertion `SuspendType->isVoidPointerType()' 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-19.1.0/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 -O2 -std=c++20 <source>
1.      <source>:70:1: current parser token 'int'
2.      <source>:66:6: LLVM IR generation of declaration 'f'
3.      <source>:66:6: Generating code for declaration 'f'
4.      <source>:66:10: LLVM IR generation of compound statement ('{}')
 #0 0x0000000003ae9978 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3ae9978)
 #1 0x0000000003ae766c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3ae766c)
 #2 0x0000000003a308f8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007d55e2842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007d55e28969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x00007d55e2842476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007d55e28287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x00007d55e282871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x00007d55e2839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x000000000421e8e6 emitSuspendExpression(clang::CodeGen::CodeGenFunction&, clang::CodeGen::CGCoroData&, clang::CoroutineSuspendExpr const&, (anonymous namespace)::AwaitKind, clang::CodeGen::AggValueSlot, bool, bool) CGCoroutine.cpp:0:0
#10 0x000000000421e9d6 clang::CodeGen::CodeGenFunction::EmitCoawaitExpr(clang::CoawaitExpr const&, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x421e9d6)
#11 0x00000000042cb792 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#12 0x00000000042d8862 (anonymous namespace)::ScalarExprEmitter::VisitExprWithCleanups(clang::ExprWithCleanups*) CGExprScalar.cpp:0:0
#13 0x00000000042cba71 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#14 0x00000000042d10bc clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x42d10bc)
#15 0x000000000425b3fe clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x425b3fe)
#16 0x000000000427fc4d clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x427fc4d)
#17 0x0000000003e4a095 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3e4a095)
#18 0x0000000003e51d14 clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3e51d14)
#19 0x0000000003e521c9 clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3e521c9)
#20 0x0000000003e5236e clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3e5236e)
#21 0x0000000003e4a025 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3e4a025)
#22 0x00000000042204a3 clang::CodeGen::CodeGenFunction::EmitCoroutineBody(clang::CoroutineBodyStmt const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x42204a3)
#23 0x0000000003e4a2ea clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3e4a2ea)
#24 0x0000000003eb8b97 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3eb8b97)
#25 0x0000000003ecda4d clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3ecda4d)
#26 0x0000000003f2de52 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3f2de52)
#27 0x0000000003f28d55 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3f28d55)
#28 0x0000000003f292fb clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3f292fb)
#29 0x0000000003f336b3 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0) CodeGenModule.cpp:0:0
#30 0x00000000043fb906 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#31 0x00000000043ebe68 clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x43ebe68)
#32 0x00000000064cc324 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x64cc324)
#33 0x00000000043f9448 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x43f9448)
#34 0x0000000004684f59 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4684f59)
#35 0x0000000004609f8e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4609f8e)
#36 0x000000000476e2be clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x476e2be)
#37 0x0000000000c82b7f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc82b7f)
#38 0x0000000000c7bcda ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#39 0x000000000443cba9 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
#40 0x0000000003a30da4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3a30da4)
#41 0x000000000443d19f 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
#42 0x0000000004402c05 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4402c05)
#43 0x000000000440366d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x440366d)
#44 0x000000000440b075 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x440b075)
#45 0x0000000000c7fe95 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc7fe95)
#46 0x0000000000b547a4 main (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xb547a4)
#47 0x00007d55e2829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#48 0x00007d55e2829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#49 0x0000000000c7b78e _start (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc7b78e)
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/eJzkW11z46i2_TXKC2WXhL4f8qA4Sd-e21PT1cntO28uJG05mpZBBSid9K8_BUiWkO0k7onnnJkz5enECDZrLfaGDSJEiHpDAS6d8MoJry9IJx8Yv3yu_yA0SILwImfl86WDMwdn9w-1QBKELIgAVAu0AQqcSChR_owIqrofP4AvTWXHVZ8V27Z1AxzdPLUN48AdP0NOePUgZSscP3PwrYNvN6zMWSOXjG8cfPvDwbdB-FjQGyHACa8dnLy9Ok5Nx07kmk_Rto6bUbIF0ZICkJAlcuIrx80kbNuGSECOvyoaIgT6zNm2FqrgGj2yunT8G8fNhORdIVHBOOtkTWH9QGjZgONfma6mdl5pseqt9gjQfhWcODjVAEqoSNdI0w0Sksi62KuPKs62a1KWHIRwcKLsIz0AKaIMngpoBwtoeDbWVrUKRkVfxYmvD5KyxHmRIVLD23Z5cwCqUadn_mJXy-USZXwjrK4U-rVc19t2EK8TNd0g-dxOB8wy_oplY8AY1iaULeUpk84cf6UaLJdL1cbPHD9TtV7Q6d7BK2R-PehHkpNairWoakpgnatQUoRe1P7-FQuOv9LdGtyOv9oxuTeYWzN4a4P9ZuqCRoVpBVuLgxZed5cvIHdCHBzQ0T8Mn6nvHGSoLPa4dz3H18jMCciKcAOq70h0ogVarik8At_RzhlrEPlOarnmQMrnPhwOBo2p1ttxcKJ60KIc9vFX7HAQ3RYO9jeVdBhsIr7tQPdl9mD1zxAinWSoprWsSTNBqyeU-ApxkB2nthw7MZH6MTGjlJ8bGbCebm0DirZqsGb5H1DIfViK56H2_cSn9euokblcGyA1o6OhsYmu23enw2-vztSBdoK_tka8NrdrBoei7c2z4olWj03lQ0jAUwuFhHLxnXCqglwrcDUIrpyHVcjB8RE31r32XSDxwLqmRDmoBkbVzMGxElCLelpM6kggeQOvxONucNBLMXdUI9XwxOBFw0KcvhK6I1syToMqWKuJv5k1fq1b7-oZvdysphJtSU1n9aupfTTEh_t_s9a7DMd81cnZhoFAOSm-IcnU1Es3Cy9dmgp3UpWXnVrT5u11VQdfqY9K0PAtZ0w6-LZpHreLljMTs7d9vduaFk1XwqQku7t38O3NU8tXv_--fHD8LPSiUBkzNbTiq0HxOzMaqrp50hd80VzvlWe-qdkG5F5LOxgylAkBXE0VyIncvraqt3D8m1p8ZXX5mdVUAh8bOzhGFakbKJV2nz_dZHc3SHT5Vg0iyrsN4tAyLpXKs9S0lg9dvizYthdvX8NaiA6ECg9CS9QrieQDoIIT8aCHT3JSgFo-Ww4tZwUIASUSrOOmWLUkQrCi1tk37ygSBa9buTww0O7ScdPPnG042SLCN90WqBT9OLNWj2ufpi9gSNP7kV2QQT2hPMlbug6-zZXL3k58Bi025XfCq0WAFhu0YMowaVtlvpNtJ5cCLbZKBrRYPCXRgojtQjxTSZ4c_1pp36BFRdniEXjOBKjnaHGHFotNUSwkY03xoMLEv34RsKrsBUu8dNGiKljD-KKsyYYyIetCmB60xHbxbxgt9JxwXRg22FWzfS-2nkM8paBV5mex6_iZpx284xyoRC3hAjiS7BtQNUnWVKoJ0s3wgeZRpP5RzT99-vor-vhl2EwpR2UVKqFoSP_VwXFlLPkvWvrQW6AbVLASUMX4ETvBMTueexyS0px1tNRLMignQjpc4n5hxbHZfSEH-y5yn9zhP59AmsYJ0vGg41Y8C_PLZ15TqR323rh8Mlbi5PuaCcmBbB0cKbfXiqam1_fxXAdfuU89vhG9N0MfR1FxCP2qAUK79jd6V28oaRycdFRvp0vUMNXFWbAqNCNWbGP13aRK0Eq5-Rco2CPwZwPuf_Syxh2c9CpadVaMSniSS7Vb9jNX_2_s-739uAxDwEmAQxUfmlVT5w6-fUqidRQsmpp2T4sN7cyDYinYMtKQdZMRcGAbTKO0KlArH9Sqv_5WN81p1nX70Xo4hxvEEdoILcGpsIM4Gg1HtmGcxJWPSK5WgZPM6oaj2XjPrJefbNDLR4OJbdBPIY1OM6ibjAbTqYMF2IMEIgTbWk5WYxDC5OLWql3CB6DWl9uOFiZrj_rN4eHaH9SSf00kOVRxPxnoF3tT18EJoYw-b1knxgxUJ1SqfaZSsf-tVSp4HEC22XwlTQd3DdO7WJWcjj9TZABqGLOQUbOHO1csLaPjXGfK6MKbbS1XTGeNOtmZCbt7YBE_jcz7T0090_4IDvueZ-tQ5HGKpyjv5FZ-rUUtGb8yW_xdbk7Kct2atOwNY3pXkIZwJYgSrm8zzteavdquDHsa3aktqsLSn5utPihLxuaB0cU2qzJJInw6wBGHKv3_Wj70i4mwce0_fQtGf648ib2_v_LBTHnPzYvT42qEvK_0EE_ZeeNEIx_jJLR5hblfwem8Mvr8BlL__klC0xvJRzb5uCqC8nTyHzeUcShfFeAchDTkkVBsJWQQEDcNf8JLdVTM48QayjHMMs7J8xeozOHr0CCTckLdHEu-ezpq-I3sE5t96JVe8DNrn9lqKM5q9mOdvCuY3p5btsZa1ko4LNdvc_ZzqKJ5j6qkM1WwV6R_TpW_jxKK604J7M6V8KOfmOvu6m3bwN8mRjTLUQNvb4bA__AZAo8zBJ7lT9gNiP8zsdDn31dMnxUf2iGoR7OIOMf8rxmM_Pz56GIg_-jRxUBG9oHNPk_yND6d_VCyP7gzFc7BSGMeGYU2o6IkpyYo_bkcqIc2mw8Ny0lzDUVjD-i4T34xaVt9GCp-pBU7q5v3xEdZrLzNr3AJIX5Nll9Z2TUwDrOhP3C4hkq_vJwfJBwTyZTvthjnIG1ojaTjGemkDF-duQ-T_o8kq-iMZJMZ2RRX-c-RPU7xLDQU0JGGnXtVvh_lr643cxr3rP0Ej9CDnpIxJcOALFvCpQKXIsvS_mbWPiEP_CpP3ei13XZvU00mjH_cto0pNke7L2P8wFnXqiUCp8hguurqpoQD-2z7-DvwIYcomSp2RYpvQMsVo6LbDmcZp4J493XY4NyNu30wHgVFoRanCaDPhAvQry2t9QW2ZJY7n2sr3GMaEfszl0iDIDngqdl0sXyCopPQF_Xvkd9dWY1kxGmfw0RJUIXWbuaWMyqBlgeAnguiATFCtI9UIjetktk2w3T6kQpJaAGH1TzO6Uy5pAE60rAPR-IIcG7R6AGPbB5ZQfbB77E901GIATjCt5ZLt0hwHleoKLx1f-vhcAb7QGZp6wrZZf1FtzOxMDBHEolNIs6LkqBB-JV3r2eHCZW7LWmar1DspugDjCJ7cVc2-jdwVhJX8vrx4Axtv5MJ_CInqbmnMhqt-rRqzbWs_e1Pc7OkP40tSNPkpPi2rqi9dTAd986z8lZsuyW0nEfyweHbHSQzfT-LKAEm4khe042uedOP7a7Bel08PXme-ZITURdroav3ElqVVUF_cXB4PDNHmkYFA-OT56rK5Gw3m14UUR8cN2Sbl0S_yx6kwsnwMvcXlu8PRuDO38CWJJiMw6H3rObJl47ekQqaZ0vLl8ftLK-UNeSdxwfezLtKL63Qf7N3zFK7w25gn2sELi7c8KhqetjI3vI4SGnN3rOGqsKx934vVM2srGZC7H2XAMN79CV_poofReWpqvzCcnFckl9Y_qkW9rHnS7PxzgVaUqvR19ch3q5i7yd_jZZKrVHLYKZl7sZHPex68ruVJRxID46NwV-o5RmSEaPPqF44W8crGN7LDOnIgF7PJtneKduxVfrdExANbQRuJYFuHgYxCfS90Xfv2dgee55fTknL9MS7P7rJaDCZG4TAReu1arMWknC5nvB6cxcQTLpI5-lanAAyxs8wUsq66Xv6zM8QcM747vorqvrtAyr6GDDXS9H3Wj4geKqlubHn-YEC2QlAi0ckGRIAqJ5k9en0b6rMzWBQIahaTu_0XpSXfpn6KbmASy_2ceS5oR9ePFxWxHOjOIE0jkhehEkYeYnrJYEPSYwDj1zUl9jFgefhyE0C7IXLqHIryPMkx17pRzh2Ahe2pG6WKjKWjG8u9I3WS8-LoyS8aEgOjdB_TobxMBEochugDsYOXqlyfQ2T0UVNH0mjUvn-AYfNcJnIz7x0bNAbGnTUedKPH2rUsBNeX_BLfcs27zbCCdymFlKM-GQtG_0HbsZKeP0n7wRfdLy5_Pl7v71Qj5f4XwEAAP__kiPpLA">