[clang][bytecode] crash with --std=c++26 --analyze -fexperimental-new-constant-interpreter #152952
Description
When compiling the following reproducer with clang++ using --std=c++26 --analyze -fexperimental-new-constant-interpreter, the compiler crashes. The crash occurs only when all of these options are present. Removing any single option avoids the crash.
Reproducer:
https://godbolt.org/z/rG3b6vnej
#include <new>
struct S {
private:
~S();
};
template<class T>
T& create();
void f()
{
S* sp = new (((void*) 0)) S(create<S>());
}Backtrace:
clang++: warning: argument unused during compilation: '-S' [-Wunused-command-line-argument]
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++ -gdwarf-4 -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++26 --analyze -fexperimental-new-constant-interpreter <source>
1. <eof> parser at end of file
#0 0x0000000003cdc778 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3cdc778)
#1 0x0000000003cda14c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3cda14c)
#2 0x0000000003c2a4e8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000778bfb842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000000007668604 clang::interp::startLifetimeRecurse(clang::interp::Pointer const&) Interp.cpp:0:0
#5 0x000000000766f0a6 clang::interp::StartLifetime(clang::interp::InterpState&, clang::interp::CodePtr) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x766f0a6)
#6 0x0000000007905d34 clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCXXNewExpr(clang::CXXNewExpr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x7905d34)
#7 0x000000000790a968 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x790a968)
#8 0x0000000007900acf clang::interp::Compiler<clang::interp::EvalEmitter>::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x7900acf)
#9 0x00000000075319a3 clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x75319a3)
#10 0x000000000751787e clang::interp::Context::evaluateAsRValue(clang::interp::State&, clang::Expr const*, clang::APValue&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x751787e)
#11 0x00000000074984ea EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) (.part.0) ExprConstant.cpp:0:0
#12 0x000000000749c7d8 clang::Expr::EvaluateAsRValue(clang::Expr::EvalResult&, clang::ASTContext const&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x749c7d8)
#13 0x000000000749c959 clang::Expr::isEvaluatable(clang::ASTContext const&, clang::Expr::SideEffectsKind) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x749c959)
#14 0x0000000005d6376b (anonymous namespace)::DeadStoreObs::observeStmt(clang::Stmt const*, clang::CFGBlock const*, clang::LiveVariables::LivenessValues const&) DeadStoresChecker.cpp:0:0
#15 0x0000000006fe1722 (anonymous namespace)::TransferFunctions::Visit(clang::Stmt*) LiveVariables.cpp:0:0
#16 0x0000000006fe446b (anonymous namespace)::LiveVariablesImpl::runOnBlock(clang::CFGBlock const*, clang::LiveVariables::LivenessValues, clang::LiveVariables::Observer*) LiveVariables.cpp:0:0
#17 0x0000000006fe473e clang::LiveVariables::runOnAllBlocks(clang::LiveVariables::Observer&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6fe473e)
#18 0x0000000005d60f37 (anonymous namespace)::DeadStoresChecker::checkASTCodeBody(clang::Decl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const DeadStoresChecker.cpp:0:0
#19 0x00000000060f0af7 clang::ento::CheckerManager::runCheckersOnASTBody(clang::Decl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x60f0af7)
#20 0x0000000005cb9520 (anonymous namespace)::AnalysisConsumer::HandleCode(clang::Decl*, unsigned int, clang::ento::ExprEngine::InliningModes, llvm::DenseSet<clang::Decl const*, llvm::DenseMapInfo<clang::Decl const*, void>>*) AnalysisConsumer.cpp:0:0
#21 0x0000000005cba367 non-virtual thunk to (anonymous namespace)::AnalysisConsumer::VisitFunctionDecl(clang::FunctionDecl*) AnalysisConsumer.cpp:0:0
#22 0x00000000073d48f5 clang::DynamicRecursiveASTVisitorBase<false>::TraverseFunctionDecl(clang::FunctionDecl*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x73d48f5)
#23 0x0000000005cba739 (anonymous namespace)::AnalysisConsumer::HandleTranslationUnit(clang::ASTContext&) AnalysisConsumer.cpp:0:0
#24 0x0000000006293cdc clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x6293cdc)
#25 0x000000000492f13a clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x492f13a)
#26 0x00000000048a86bb clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x48a86bb)
#27 0x0000000004a1fd63 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4a1fd63)
#28 0x0000000000dc00c5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdc00c5)
#29 0x0000000000db806d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#30 0x0000000004695bc9 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
#31 0x0000000003c2a903 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c2a903)
#32 0x0000000004695de9 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
#33 0x000000000465917d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x465917d)
#34 0x000000000465a131 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+++0x465a131)
#35 0x0000000004663f7c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4663f7c)
#36 0x0000000000dbc8d1 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdbc8d1)
#37 0x0000000000c6b864 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0xc6b864)
#38 0x0000778bfb829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#39 0x0000778bfb829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#40 0x0000000000db7b05 _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdb7b05)
clang++: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Compiler returned: 139