| Issue |
170073
|
| Summary |
clang trunk: crash in IRBuilder::CreateCast / ScalarExprEmitter::VisitCastExpr for vector long double comparison return
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
Theaamadu
|
## Compiler Explorer: https://godbolt.org/z/E5xeMqdjv
- clang crashed on `Trunk`
- generated by fuzzer
## Console
```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-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 <source>
1. <eof> parser at end of file
2. <source>:6:3: LLVM IR generation of declaration 'sum'
3. <source>:6:3: Generating code for declaration 'sum'
#0 0x0000000004279728 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4279728)
#1 0x0000000004276b54 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4276b54)
#2 0x00000000041ba888 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000757644442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007576444969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000757644442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007576444287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000075764442871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000757644439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000003b3ff06 (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3b3ff06)
#10 0x000000000463c97b llvm::IRBuilderBase::CreateCast(llvm::Instruction::CastOps, llvm::Value*, llvm::Type*, llvm::Twine const&, llvm::MDNode*, llvm::FMFSource) (.constprop.0) CGExprScalar.cpp:0:0
#11 0x0000000004658496 (anonymous namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*) CGExprScalar.cpp:0:0
#12 0x00000000046505a1 clang::StmtVisitorBase<std::add_pointer, (anonymous namespace)::ScalarExprEmitter, llvm::Value*>::Visit(clang::Stmt*) CGExprScalar.cpp:0:0
#13 0x00000000046549bc clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x46549bc)
#14 0x00000000047667bc clang::CodeGen::CodeGenFunction::EmitReturnStmt(clang::ReturnStmt const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47667bc)
#15 0x0000000004770180 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4770180)
#16 0x0000000004777e0b clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4777e0b)
#17 0x00000000047dfaee clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47dfaee)
#18 0x00000000047f0dd4 clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47f0dd4)
#19 0x000000000485e810 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x485e810)
#20 0x00000000048594b4 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x48594b4)
#21 0x000000000485a470 clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x485a470)
#22 0x0000000004864d83 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0) CodeGenModule.cpp:0:0
#23 0x0000000004bcb7d9 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#24 0x0000000004bbc304 clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4bbc304)
#25 0x0000000006960794 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6960794)
#26 0x0000000004bc8be8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4bc8be8)
#27 0x0000000004eb4455 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4eb4455)
#28 0x0000000004e3460e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4e3460e)
#29 0x0000000004fad48d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4fad48d)
#30 0x0000000000dc7780 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdc7780)
#31 0x0000000000dbe1fa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#32 0x0000000000dbe37d 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
#33 0x0000000004c313d9 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
#34 0x00000000041bad24 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x41bad24)
#35 0x0000000004c319ef 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
#36 0x0000000004bf21e2 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4bf21e2)
#37 0x0000000004bf318e 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+0x4bf318e)
#38 0x0000000004bfa5c5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4bfa5c5)
#39 0x0000000000dc3ba1 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdc3ba1)
#40 0x0000000000c72574 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xc72574)
#41 0x0000757644429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#42 0x0000757644429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#43 0x0000000000dbdc95 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdbdc95)
clang: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
## Code
```c
typedef long double a __attribute__((vector_size(16)));
a sum(a first, a second) { return first >= second; }
```
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