fatal error: error in backend: Cannot implicitly convert a scalable size to a fixed-width size in `TypeSize::operator ScalarTy()` 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-trunk/bin/clang -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.	<eof> parser at end of file 2.	<source>:7:6: LLVM IR generation of declaration 'bar' 3.	<source>:7:6: Generating code for declaration 'bar'  #0 0x0000000003caee98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3caee98)  #1 0x0000000003cac86c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3cac86c)  #2 0x0000000003bf37d3 llvm::CrashRecoveryContext::HandleExit(int) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3bf37d3)  #3 0x0000000003ca40ae llvm::sys::Process::Exit(int, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3ca40ae)  #4 0x0000000000dca91b LLVMErrorHandler(void*, char const*, bool) cc1_main.cpp:0:0  #5 0x0000000003bfd563 llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3bfd563)  #6 0x0000000003bfd6f9 (/opt/compiler-explorer/clang-trunk/bin/clang+0x3bfd6f9)  #7 0x0000000003fd966e (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fd966e)  #8 0x0000000003fdf20b clang::CodeGen::CodeGenFunction::EmitLValueForField(clang::CodeGen::LValue, clang::FieldDecl const*, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fdf20b)  #9 0x0000000003fe3ab5 clang::CodeGen::CodeGenFunction::EmitLValueForFieldInitialization(clang::CodeGen::LValue, clang::FieldDecl const*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fe3ab5) #10 0x0000000003ffea0d (anonymous namespace)::AggExprEmitter::VisitCXXParenListOrInitListExpr(clang::Expr*, llvm::ArrayRef<clang::Expr*>, clang::FieldDecl*, clang::Expr*) CGExprAgg.cpp:0:0 #11 0x0000000003ffbdf8 (anonymous namespace)::AggExprEmitter::Visit(clang::Expr*) CGExprAgg.cpp:0:0 #12 0x0000000003ffce19 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3ffce19) #13 0x0000000003ffc9c2 (anonymous namespace)::AggExprEmitter::Visit(clang::Expr*) CGExprAgg.cpp:0:0 #14 0x0000000003ffa6ec (anonymous namespace)::AggExprEmitter::VisitCastExpr(clang::CastExpr*) CGExprAgg.cpp:0:0 #15 0x0000000003ffbda8 (anonymous namespace)::AggExprEmitter::Visit(clang::Expr*) CGExprAgg.cpp:0:0 #16 0x0000000003ffce19 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3ffce19) #17 0x0000000003ffb723 (anonymous namespace)::AggExprEmitter::VisitCastExpr(clang::CastExpr*) CGExprAgg.cpp:0:0 #18 0x0000000003ffbda8 (anonymous namespace)::AggExprEmitter::Visit(clang::Expr*) CGExprAgg.cpp:0:0 #19 0x0000000003ffd16e (anonymous namespace)::AggExprEmitter::VisitBinAssign(clang::BinaryOperator const*) CGExprAgg.cpp:0:0 #20 0x0000000003ffc68b (anonymous namespace)::AggExprEmitter::Visit(clang::Expr*) CGExprAgg.cpp:0:0 #21 0x0000000003ffce19 clang::CodeGen::CodeGenFunction::EmitAggExpr(clang::Expr const*, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3ffce19) #22 0x0000000003fb53b2 clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fb53b2) #23 0x0000000003fb67eb clang::CodeGen::CodeGenFunction::EmitAnyExprToTemp(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fb67eb) #24 0x000000000447bda8 clang::CodeGen::CodeGenFunction::EmitCallArg(clang::CodeGen::CallArgList&, clang::Expr const*, clang::QualType) (/opt/compiler-explorer/clang-trunk/bin/clang+0x447bda8) #25 0x00000000044866f5 clang::CodeGen::CodeGenFunction::EmitCallArgs(clang::CodeGen::CallArgList&, clang::CodeGen::CodeGenFunction::PrototypeWrapper, llvm::iterator_range<clang::Stmt::CastIterator<clang::Expr, clang::Expr const* const, clang::Stmt const* const>>, clang::CodeGen::CodeGenFunction::AbstractCallee, unsigned int, clang::CodeGen::CodeGenFunction::EvaluationOrder) (/opt/compiler-explorer/clang-trunk/bin/clang+0x44866f5) #26 0x0000000003fd6922 clang::CodeGen::CodeGenFunction::EmitCall(clang::QualType, clang::CodeGen::CGCallee const&, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::Value*, llvm::CallBase**, clang::CodeGen::CGFunctionInfo const**) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fd6922) #27 0x0000000003fd7b96 clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, clang::CodeGen::ReturnValueSlot, llvm::CallBase**) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fd7b96) #28 0x000000000404f059 (anonymous namespace)::ScalarExprEmitter::VisitCallExpr(clang::CallExpr const*) CGExprScalar.cpp:0:0 #29 0x000000000404448b clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0 #30 0x0000000004049d62 clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x4049d62) #31 0x0000000003fb556e clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, clang::CodeGen::AggValueSlot, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fb556e) #32 0x0000000003fc38e8 clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3fc38e8) #33 0x00000000041494eb clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-trunk/bin/clang+0x41494eb) #34 0x0000000004150ae9 clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-trunk/bin/clang+0x4150ae9) #35 0x00000000041b2e55 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x41b2e55) #36 0x00000000041c3f33 clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x41c3f33) #37 0x0000000004221f9b clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x4221f9b) #38 0x000000000421dc74 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x421dc74) #39 0x000000000421e573 clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-trunk/bin/clang+0x421e573) #40 0x0000000004227e6f clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0) CodeGenModule.cpp:0:0 #41 0x0000000004577f41 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0 #42 0x0000000004561c29 clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-trunk/bin/clang+0x4561c29) #43 0x00000000061dd004 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x61dd004) #44 0x0000000004574fd5 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+0x4574fd5) #45 0x000000000487038a clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+0x487038a) #46 0x00000000047f0d6b clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x47f0d6b) #47 0x000000000496630b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x496630b) #48 0x0000000000dcc975 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+0xdcc975) #49 0x0000000000dc48cb ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0 #50 0x0000000000dc496d int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0 #51 0x00000000045e2839 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 #52 0x0000000003bf36d3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3bf36d3) #53 0x00000000045e2a59 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 #54 0x00000000045a5ce2 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+0x45a5ce2) #55 0x00000000045a6bc1 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+0x45a6bc1) #56 0x00000000045af6fc clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x45af6fc) #57 0x0000000000dc93c9 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-trunk/bin/clang+0xdc93c9) #58 0x0000000000c75434 main (/opt/compiler-explorer/clang-trunk/bin/clang+0xc75434) #59 0x000070222f029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90) #60 0x000070222f029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40) #61 0x0000000000dc4365 _start (/opt/compiler-explorer/clang-trunk/bin/clang+0xdc4365) clang: error: clang frontend command failed with exit code 70 (use -v to see invocation) Compiler returned: 70