Closed
Description
The following example:
// clang-19 -std=c++23 --analyze -Xclang -analyzer-config -Xclang aggressive-binary-operation-simplification=true -Xclang -analyzer-checker=alpha.cplusplus.InvalidatedIterator -Xclang -analyzer-output=text file.cpp
class ExplicitThis {
int f = 0;
public:
ExplicitThis();
ExplicitThis(ExplicitThis& other);
ExplicitThis& operator=(this ExplicitThis& self, ExplicitThis const& other) {
self.f = other.f;
return self;
}
~ExplicitThis();
};
void func(ExplicitThis& obj1) {
obj1 = obj1;
}crashes the analyzer (both when assertions are enabled and disabled).
Stack trace:
clang++: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = clang::ento::CXXInstanceCall; From = const clang::ento::CallEvent]: Assertion `isa<To>(Val) && "cast<Ty>() argument of incompatible type!"' 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-19.1.0/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-14.2.0 -fcolor-diagnostics -fno-crash-diagnostics -std=c++23 --analyze -Xclang -analyzer-config -Xclang aggressive-binary-operation-simplification=true -Xclang -analyzer-checker=alpha.cplusplus.InvalidatedIterator -Xclang -analyzer-output=text <source>
1. <eof> parser at end of file
2. While analyzing stack:
#0 Calling ExplicitThis::operator=(ExplicitThis &, const ExplicitThis &) at line 16
#1 Calling func(ExplicitThis &)
#0 0x0000000003ae9978 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3ae9978)
#1 0x0000000003ae766c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3ae766c)
#2 0x0000000003a308f8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000786312842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007863128969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000786312842476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007863128287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000078631282871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000786312839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000005e2a5d7 void clang::ento::check::PostCall::_checkCall<(anonymous namespace)::ContainerModeling>(void*, clang::ento::CallEvent const&, clang::ento::CheckerContext&) ContainerModeling.cpp:0:0
#10 0x000000000634bde9 void expandGraphWithCheckers<(anonymous namespace)::CheckCallContext>((anonymous namespace)::CheckCallContext, clang::ento::ExplodedNodeSet&, clang::ento::ExplodedNodeSet const&) CheckerManager.cpp:0:0
#11 0x000000000634bfba clang::ento::CheckerManager::runCheckersForCallEvent(bool, clang::ento::ExplodedNodeSet&, clang::ento::ExplodedNodeSet const&, clang::ento::CallEvent const&, clang::ento::ExprEngine&, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x634bfba)
#12 0x00000000063bef7d clang::ento::ExprEngine::processCallExit(clang::ento::ExplodedNode*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x63bef7d)
#13 0x0000000006355a4c clang::ento::CoreEngine::dispatchWorkItem(clang::ento::ExplodedNode*, clang::ProgramPoint, clang::ento::WorkListUnit const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x6355a4c)
#14 0x0000000006355d7a clang::ento::CoreEngine::ExecuteWorkList(clang::LocationContext const*, unsigned int, llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x6355d7a)
#15 0x0000000005d35621 (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
#16 0x0000000005d5c842 (anonymous namespace)::AnalysisConsumer::HandleDeclsCallGraph(unsigned int) AnalysisConsumer.cpp:0:0
#17 0x0000000005d5dee6 (anonymous namespace)::AnalysisConsumer::HandleTranslationUnit(clang::ASTContext&) AnalysisConsumer.cpp:0:0
#18 0x00000000064cc55c clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x64cc55c)
#19 0x0000000004684f59 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4684f59)
#20 0x0000000004609f8e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4609f8e)
#21 0x000000000476e2be clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x476e2be)
#22 0x0000000000c82b7f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc82b7f)
#23 0x0000000000c7bcda ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#24 0x000000000443cba9 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
#25 0x0000000003a30da4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3a30da4)
#26 0x000000000443d19f 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
#27 0x0000000004402c05 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4402c05)
#28 0x000000000440366d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x440366d)
#29 0x000000000440b075 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x440b075)
#30 0x0000000000c7fe95 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc7fe95)
#31 0x0000000000b547a4 main (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xb547a4)
#32 0x0000786312829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#33 0x0000786312829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#34 0x0000000000c7b78e _start (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc7b78e)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
Compiler Explorer link: https://godbolt.org/z/rbTfGorMK