llvmbot
commented
2 weeks ago @llvm/issue-subscribers-clang-static-analyzer
Author: None (z1nke)
Example: https://godbolt.org/z/G675h4q8r
Standard C++ does not have compound literals, and I'm not sure whether it needs to be fixed.
I accidentally found this crash during testing and posted it here.
```cpp
// clang --analyze -Xclang -analyzer-checker=core test.cpp
const char *foo(void) {
return (const char[]) { "abc" };
}
```
```
clang++: /root/llvm-project/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp:343: clang::ento::ProgramStateRef clang::ento::ExprEngine::createTemporaryRegionIfNeeded(clang::ento::ProgramStateRef, const clang::LocationContext*, const clang::Expr*, const clang::Expr*, const clang::ento::SubRegion**): Assertion `!isa<Loc>(InitValWithAdjustments) || Loc::isLocType(Result->getType()) || Result->getType()->isMemberPointerType()' 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 -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-14.2.0 -fcolor-diagnostics -fno-crash-diagnostics --analyze -Xclang -analyzer-checker=core <source>
1. <eof> parser at end of file
2. While analyzing stack:
#0 Calling foo()
3. <source>:2:10: Error evaluating statement
4. <source>:2:10: Error evaluating statement
#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 0x00007a076d642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007a076d6969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007a076d642476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007a076d6287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00007a076d62871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x00007a076d639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000006388a85 clang::ento::ExprEngine::createTemporaryRegionIfNeeded(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::LocationContext const*, clang::Expr const*, clang::Expr const*, clang::ento::SubRegion const**) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x6388a85)
#10 0x00000000063b3b18 clang::ento::ExprEngine::CreateCXXTemporaryObject(clang::MaterializeTemporaryExpr const*, clang::ento::ExplodedNode*, clang::ento::ExplodedNodeSet&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x63b3b18)
#11 0x0000000006398846 clang::ento::ExprEngine::Visit(clang::Stmt const*, clang::ento::ExplodedNode*, clang::ento::ExplodedNodeSet&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x6398846)
#12 0x000000000639af75 clang::ento::ExprEngine::ProcessStmt(clang::Stmt const*, clang::ento::ExplodedNode*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x639af75)
#13 0x00000000063a30fa clang::ento::ExprEngine::processCFGElement(clang::CFGElement, clang::ento::ExplodedNode*, unsigned int, clang::ento::NodeBuilderContext*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x63a30fa)
#14 0x00000000063557fb clang::ento::CoreEngine::HandlePostStmt(clang::CFGBlock const*, unsigned int, clang::ento::ExplodedNode*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x63557fb)
#15 0x0000000006355c3b clang::ento::CoreEngine::dispatchWorkItem(clang::ento::ExplodedNode*, clang::ProgramPoint, clang::ento::WorkListUnit const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x6355c3b)
#16 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)
#17 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
#18 0x0000000005d5c842 (anonymous namespace)::AnalysisConsumer::HandleDeclsCallGraph(unsigned int) AnalysisConsumer.cpp:0:0
#19 0x0000000005d5dee6 (anonymous namespace)::AnalysisConsumer::HandleTranslationUnit(clang::ASTContext&) AnalysisConsumer.cpp:0:0
#20 0x00000000064cc55c clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x64cc55c)
#21 0x0000000004684f59 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4684f59)
#22 0x0000000004609f8e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x4609f8e)
#23 0x000000000476e2be clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x476e2be)
#24 0x0000000000c82b7f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc82b7f)
#25 0x0000000000c7bcda ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#26 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
#27 0x0000000003a30da4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0x3a30da4)
#28 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
#29 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)
#30 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)
#31 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)
#32 0x0000000000c7fe95 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc7fe95)
#33 0x0000000000b547a4 main (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xb547a4)
#34 0x00007a076d629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#35 0x00007a076d629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#36 0x0000000000c7b78e _start (/opt/compiler-explorer/clang-assertions-19.1.0/bin/clang+++0xc7b78e)
```
Example: https://godbolt.org/z/G675h4q8r
Standard C++ does not have compound literals, and I'm not sure whether it needs to be fixed.
I accidentally found this crash during testing and posted it here.