Svadev mailing list

[John Criswell <criswell AT illinois.edu>]

On 12/21/11 4:22 PM, Sean McBride wrote:
> On Wed, 21 Dec 2011 10:07:42 -0600, John Criswell said:
>
> > Just to sanity check here: you're using the release_30 branch of LLVM
> > and mainline poolalloc and safecode, correct?
> Nope. :)  Thanks.
>
> Now I've succeeded building it, and things work fine with toy apps.
>
> Next, I've tried building my actual Cocoa app with it.  Most files compile, 
> but clang crashes on 7 files, all Obj-C++, see below.

I haven't tried SAFECode on Objective-C and Objective-C++ programs, so 
there's a good chance that it won't work.  That said, this looks like a 
bug that could trigger in C/C++ applications.

Can you send to the list a small Objective-C++ program that reproduces 
the error?

> I removed -fmemsafety from C++ then everything compiles, but linking fails, 
> see below below.

Can you try the compile with an unmodified Clang from LLVM 3.0?

-- John T.

> I'll next try with some smaller projects....
>
> Cheers,
>
> Sean
>
>
>
> Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
> 0   clang                               0x000000010f66534c 
> llvm::Value::getValueID() const + 12
> 1   clang                               0x000000010f667be5 
> llvm::Instruction::getOpcode() const + 21
> 2   clang                               0x000000010ffe1cf5 
> llvm::ReturnInst::classof(llvm::Instruction const*) + 21
> 3   clang                               0x000000010fe8d905 
> llvm::isa_impl<llvm::ReturnInst, llvm::Instruction>::doit(llvm::Instruction 
> const&) + 21
> 4   clang                               0x000000010fe8d8e5 
> llvm::isa_impl_cl<llvm::ReturnInst, 
> llvm::Instruction*>::doit(llvm::Instruction const*) + 21
> 5   clang                               0x000000010fe8d8b8 
> llvm::isa_impl_wrap<llvm::ReturnInst, llvm::Instruction*, 
> llvm::Instruction*>::doit(llvm::Instruction* const&) + 24
> 6   clang                               0x000000010fe8d855 bool 
> llvm::isa<llvm::ReturnInst, llvm::Instruction*>(llvm::Instruction* const&) + 
> 21
> 7   clang                               0x000000010f50f596 
> llvm::RegisterStackObjPass::runOnFunction(llvm::Function&) + 774
> 8   clang                               0x00000001102048c7 
> llvm::FPPassManager::runOnFunction(llvm::Function&) + 471
> 9   clang                               0x0000000110204c2d 
> llvm::FPPassManager::runOnModule(llvm::Module&) + 125
> 10  clang                               0x0000000110204e80 
> llvm::MPPassManager::runOnModule(llvm::Module&) + 496
> 11  clang                               0x000000011020543c 
> llvm::PassManagerImpl::run(llvm::Module&) + 172
> 12  clang                               0x0000000110205871 
> llvm::PassManager::run(llvm::Module&) + 33
> 13  clang                               0x000000010e88132d (anonymous 
> namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, 
> llvm::raw_ostream*) + 845
> 14  clang                               0x000000010e880f71 
> clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, 
> clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*, 
> clang::BackendAction, llvm::raw_ostream*) + 97
> 15  clang                               0x000000010e9a12ed 
> clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 477
> 16  clang                               0x000000010e9db04d 
> clang::ParseAST(clang::Sema&, bool) + 749
> 17  clang                               0x000000010e72e558 
> clang::ASTFrontendAction::ExecuteAction() + 264
> 18  clang                               0x000000010e99fdbb 
> clang::CodeGenAction::ExecuteAction() + 1051
> 19  clang                               0x000000010e72e1a3 
> clang::FrontendAction::Execute() + 307
> 20  clang                               0x000000010e70328c 
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 604
> 21  clang                               0x000000010e6da4f1 
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 961
> 22  clang                               0x000000010e6c86de cc1_main(char 
> const**, char const**, char const*, void*) + 926 (cc1_main.cpp:159)
> 23  clang                               0x000000010e6d4819 main + 473 
> (driver.cpp:353)
> 24  clang                               0x000000010e6c8334 start + 52
>
>
> ld: in 
> /brainsight2/trunk/build/Brainsight2.build/Debug/Brainsight.build/Objects-normal/x86_64/_BS17ControlCurve.o,
>  in section __TEXT,__text reloc 7: sectionForNum(25) section number not for 
> any section for architecture x86_64
> clang: error: linker command failed with exit code 1 (use -v to see 
> invocation)
> Command /Users/sean/llvm-3/llvm-safecode-install/bin/clang++ failed with exit 
> code 1