| Issue |
183290
|
| Summary |
[clang] UNREACHABLE executed in llvm-project/llvm/tools/clang/lib/AST/ExprConstant.cpp
|
| Labels |
c++20,
clang:frontend,
crash
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/bverYxKbW
```cpp
struct S {
constexpr char f() const { return 'Z'; }
char s = f();
};
struct D : sizeof(int[n]) {};
struct C1 {
D d;
virtual const S *f() const;
};
struct C2 : C1 {
constexpr virtual const D *f() const { return &this->d; }
};
constexpr C2 cb;
constexpr const C1 *cb1 = &cb;
static_assert(cb1->f()->s == 'Z');
```
Backtrace:
```console
Class must be derived from the passed in base class!
UNREACHABLE executed at /root/llvm-project/llvm/tools/clang/lib/AST/ExprConstant.cpp:3196!
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++20 <source>
1. <eof> parser at end of file
#0 0x00000000043ff408 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43ff408)
#1 0x00000000043fc854 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43fc854)
#2 0x000000000433c9a8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007de066242520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007de0662969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007de066242476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007de0662287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00000000043473aa (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43473aa)
#8 0x0000000007eea3cf HandleCovariantReturnAdjustment((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&, llvm::ArrayRef<clang::QualType>) ExprConstant.cpp:0:0
#9 0x0000000007f6db53 (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) ExprConstant.cpp:0:0
#10 0x0000000007f3acbe clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::PointerExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#11 0x0000000007f3c91b EvaluatePointer(clang::Expr const*, (anonymous namespace)::LValue&, (anonymous namespace)::EvalInfo&, bool) ExprConstant.cpp:0:0
#12 0x0000000007f6233f (anonymous namespace)::LValueExprEvaluator::VisitMemberExpr(clang::MemberExpr const*) ExprConstant.cpp:0:0
#13 0x0000000007f43005 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::LValueExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#14 0x0000000007f4420d EvaluateLValue(clang::Expr const*, (anonymous namespace)::LValue&, (anonymous namespace)::EvalInfo&, bool) ExprConstant.cpp:0:0
#15 0x0000000007f7b157 (anonymous namespace)::IntExprEvaluator::VisitCastExpr(clang::CastExpr const*) ExprConstant.cpp:0:0
#16 0x0000000007eff072 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#17 0x0000000007f7ab54 (anonymous namespace)::IntExprEvaluator::VisitCastExpr(clang::CastExpr const*) ExprConstant.cpp:0:0
#18 0x0000000007eff072 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#19 0x0000000007f2661e Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) ExprConstant.cpp:0:0
#20 0x0000000007f26f1b EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#21 0x0000000007f2bb4f clang::Expr::isCXX11ConstantExpr(clang::ASTContext const&, clang::APValue*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7f2bb4f)
#22 0x0000000007f2bf70 EvaluateCPlusPlus11IntegralConstantExpr(clang::ASTContext const&, clang::Expr const*, llvm::APSInt*) ExprConstant.cpp:0:0
#23 0x0000000007f2ff9f clang::Expr::getIntegerConstantExpr(clang::ASTContext const&) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7f2ff9f)
#24 0x0000000006e53777 AnalyzeImplicitConversions(clang::Sema&, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#25 0x0000000006e54405 clang::Sema::CheckCompletedExpr(clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e54405)
#26 0x00000000071fddb7 clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x71fddb7)
#27 0x0000000007048b41 clang::Sema::BuildStaticAssertDeclaration(clang::SourceLocation, clang::Expr*, clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7048b41)
#28 0x0000000006c2d2c6 clang::Parser::ParseStaticAssertDeclaration(clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c2d2c6)
#29 0x0000000006c1ae36 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c1ae36)
#30 0x0000000006bd7636 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bd7636)
#31 0x0000000006bd8545 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bd8545)
#32 0x0000000006bb9c2a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bb9c2a)
#33 0x0000000004ed6c18 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ed6c18)
#34 0x00000000051d7e95 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x51d7e95)
#35 0x00000000051562de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x51562de)
#36 0x00000000052d3d3d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x52d3d3d)
#37 0x0000000000def55e cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdef55e)
#38 0x0000000000de5eea ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#39 0x0000000000de606d 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
#40 0x0000000004f4a619 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
#41 0x000000000433cde4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x433cde4)
#42 0x0000000004f4ac2f 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
#43 0x0000000004f0b692 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f0b692)
#44 0x0000000004f0c63e 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+++0x4f0c63e)
#45 0x0000000004f139b5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f139b5)
#46 0x0000000000deb8d9 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdeb8d9)
#47 0x0000000000ca3e1a main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xca3e1a)
#48 0x00007de066229d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#49 0x00007de066229e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#50 0x0000000000de5985 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xde5985)
clang++: error: clang frontend command failed due to signal (use -v to see invocation)
Compiler returned: 134
```
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
