| Issue |
157650
|
| Summary |
[clang][bytecode] crash when using reference to const pointer in constexpr struct
|
| Labels |
crash,
clang:bytecode
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/PqTWsKP4j
```cpp
struct S {
int *const &t;
};
void foo(int x) {
constexpr S s = {&x};
static_assert(s.t == &x, "");
}
```
Backtrace:
```console
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 -fexperimental-new-constant-interpreter <source>
1. <source>:8:1: current parser token '}'
2. <source>:5:17: parsing function body 'foo'
3. <source>:5:17: in compound statement ('{}')
#0 0x0000000003c3c9e8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c3c9e8)
#1 0x0000000003c3a3bc llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c3a3bc)
#2 0x0000000003b8a2a8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007d22df642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000000007537528 clang::interp::CheckLoad(clang::interp::InterpState&, clang::interp::CodePtr, clang::interp::Pointer const&, clang::AccessKinds) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x7537528)
#5 0x000000000746d4f7 clang::interp::EvalEmitter::emitLoadPop(clang::interp::PrimType, clang::interp::SourceInfo const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x746d4f7)
#6 0x00000000077c9e6a clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x77c9e6a)
#7 0x00000000077c89ab clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x77c89ab)
#8 0x00000000077cacba clang::interp::Compiler<clang::interp::EvalEmitter>::VisitBinaryOperator(clang::BinaryOperator const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x77cacba)
#9 0x00000000077c89ab clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x77c89ab)
#10 0x00000000077bed67 clang::interp::Compiler<clang::interp::EvalEmitter>::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x77bed67)
#11 0x00000000073e8e43 clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x73e8e43)
#12 0x00000000073c74e1 clang::interp::Context::evaluateAsRValue(clang::interp::State&, clang::Expr const*, clang::APValue&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x73c74e1)
#13 0x0000000007340f4a EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#14 0x0000000007345158 clang::Expr::EvaluateAsRValue(clang::Expr::EvalResult&, clang::ASTContext const&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x7345158)
#15 0x00000000066cb118 clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, clang::Sema::VerifyICEDiagnoser&, clang::AllowFoldKind) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x66cb118)
#16 0x00000000066cbc62 clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, unsigned int, clang::AllowFoldKind) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x66cbc62)
#17 0x00000000065d654b clang::Sema::BuildStaticAssertDeclaration(clang::SourceLocation, clang::Expr*, clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x65d654b)
#18 0x00000000061d9c68 clang::Parser::ParseStaticAssertDeclaration(clang::SourceLocation&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61d9c68)
#19 0x00000000061c793b clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61c793b)
#20 0x0000000006283826 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::LabelDecl*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6283826)
#21 0x0000000006284169 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::LabelDecl*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6284169)
#22 0x000000000628dc20 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x628dc20)
#23 0x000000000628e65a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x628e65a)
#24 0x0000000006178053 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6178053)
#25 0x00000000061c4a2f clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x61c4a2f)
#26 0x0000000006170b3f clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6170b3f)
#27 0x0000000006171937 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6171937)
#28 0x000000000617a58f clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x617a58f)
#29 0x000000000617bd97 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x617bd97)
#30 0x000000000615545a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x615545a)
#31 0x0000000004503eed clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4503eed)
#32 0x000000000480a1da clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x480a1da)
#33 0x00000000047847fb clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x47847fb)
#34 0x00000000048fe813 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x48fe813)
#35 0x0000000000dc2365 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdc2365)
#36 0x0000000000dba30d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#37 0x0000000004571189 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
#38 0x0000000003b8a6c3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3b8a6c3)
#39 0x00000000045713a9 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
#40 0x000000000453450d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x453450d)
#41 0x00000000045354c1 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+++0x45354c1)
#42 0x000000000453ee1c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x453ee1c)
#43 0x0000000000dbeb71 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdbeb71)
#44 0x0000000000c6d644 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0xc6d644)
#45 0x00007d22df629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#46 0x00007d22df629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#47 0x0000000000db9da5 _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdb9da5)
clang++: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Compiler returned: 139
```
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