[clang][bytecode] Assertion `isDereferencable()' failed. #156219
Description
The following crashes with --std=c++03 -fexperimental-new-constant-interpreter, and this comes from clang/test/AST/ByteCode/cxx2a.cpp
https://godbolt.org/z/f3z7bbdr5
namespace std {
struct type_info;
}
namespace TypeId {
struct B {
virtual void f();
const std::type_info &ti1 = typeid(*this);
};
struct B2 : B {
const std::type_info &ti2 = typeid(*this);
};
static_assert(&B2().ti1 == &typeid(B));
}Backtrace:
clang++: /root/llvm-project/llvm/tools/clang/lib/AST/ByteCode/Pointer.h:663: T& clang::interp::Pointer::deref() const [with T = clang::interp::Pointer]: Assertion `isDereferencable()' 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++ -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 --std=c++03 -fexperimental-new-constant-interpreter <source>
1. <source>:13:27: current parser token '=='
2. <source>:5:1: parsing namespace 'TypeId'
#0 0x000000000404bc38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x404bc38)
#1 0x0000000004049064 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4049064)
#2 0x0000000003f8d9f8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000750349442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007503494969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000750349442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007503494287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000075034942871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000750349439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x00000000079cab4e clang::interp::Pointer& clang::interp::Pointer::deref<clang::interp::Pointer>() const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x79cab4e)
#10 0x0000000007a186ea clang::interp::EvalEmitter::emitInitField(clang::interp::PrimType, unsigned int, clang::interp::SourceInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7a186ea)
#11 0x0000000007de807e clang::interp::Compiler<clang::interp::EvalEmitter>::visitZeroRecordInitializer(clang::interp::Record const*, clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7de807e)
#12 0x0000000007e12fba clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCXXConstructExpr(clang::CXXConstructExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e12fba)
#13 0x0000000007e1f50b clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e1f50b)
#14 0x0000000007e124d2 clang::interp::Compiler<clang::interp::EvalEmitter>::visitInitializer(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e124d2)
#15 0x0000000007e1ecf6 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e1ecf6)
#16 0x0000000007e24a47 clang::interp::Compiler<clang::interp::EvalEmitter>::VisitMemberExpr(clang::MemberExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e24a47)
#17 0x0000000007e1ebfc clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e1ebfc)
#18 0x0000000007e13752 clang::interp::Compiler<clang::interp::EvalEmitter>::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e13752)
#19 0x00000000079aba7d clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x79aba7d)
#20 0x0000000007985a0f clang::interp::Context::evaluate(clang::interp::State&, clang::Expr const*, clang::APValue&, clang::Expr::ConstantExprKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7985a0f)
#21 0x000000000795d905 clang::Expr::EvaluateAsConstantExpr(clang::Expr::EvalResult&, clang::ASTContext const&, clang::Expr::ConstantExprKind) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x795d905)
#22 0x00000000077522fb clang::computeDependence(clang::UnaryOperator*, clang::ASTContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x77522fb)
#23 0x00000000078be040 clang::UnaryOperator::Create(clang::ASTContext const&, clang::Expr*, clang::UnaryOperatorKind, clang::QualType, clang::ExprValueKind, clang::ExprObjectKind, clang::SourceLocation, bool, clang::FPOptionsOverride) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x78be040)
#24 0x0000000006bed6a8 clang::Sema::CreateBuiltinUnaryOp(clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bed6a8)
#25 0x0000000006f8931e clang::Sema::CreateOverloadedUnaryOp(clang::SourceLocation, clang::UnaryOperatorKind, clang::UnresolvedSetImpl const&, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6f8931e)
#26 0x0000000006bee2ed clang::Sema::BuildUnaryOp(clang::Scope*, clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bee2ed)
#27 0x0000000006732938 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, bool&, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6732938)
#28 0x0000000006733d57 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6733d57)
#29 0x0000000006733de9 clang::Parser::ParseAssignmentExpression(clang::TypoCorrectionTypeBehavior) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6733de9)
#30 0x000000000673414e clang::Parser::ParseExpressionList(llvm::SmallVectorImpl<clang::Expr*>&, llvm::function_ref<void ()>, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x673414e)
#31 0x00000000066eb2ca clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66eb2ca)
#32 0x00000000066fa0e9 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+++0x66fa0e9)
#33 0x00000000066b745e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66b745e)
#34 0x00000000066b7bff clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66b7bff)
#35 0x00000000066bfa3a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66bfa3a)
#36 0x000000000671de25 clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x671de25)
#37 0x000000000671eaa6 clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x671eaa6)
#38 0x0000000006703430 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6703430)
#39 0x00000000066bfaec clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66bfaec)
#40 0x00000000066c09d5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66c09d5)
#41 0x00000000066a093a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66a093a)
#42 0x0000000004975908 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4975908)
#43 0x0000000004c6e255 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c6e255)
#44 0x0000000004be988e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4be988e)
#45 0x0000000004d62431 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4d62431)
#46 0x0000000000db171f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdb171f)
#47 0x0000000000da83ca ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#48 0x00000000049dda49 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
#49 0x0000000003f8de94 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3f8de94)
#50 0x00000000049de05f 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
#51 0x000000000499f9fd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x499f9fd)
#52 0x00000000049a0a8e 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+++0x49a0a8e)
#53 0x00000000049a8a25 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49a8a25)
#54 0x0000000000dadbd5 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdadbd5)
#55 0x0000000000c61b34 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc61b34)
#56 0x0000750349429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#57 0x0000750349429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#58 0x0000000000da7e75 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xda7e75)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134