Hi Everyone,
I've managed to create a small example that reproduces the error that
I'm seeing when generating code, or running the interpreter:
-----------------------------------------------------------------------
@llvm_gc_root_chain = global i8* null
declare i8* @malloc(i32)
declare void @llvm.gcroot(i8**, i8*) nounwind
define i32 @main() gc "shadow-stack" {
%value = call i8* @malloc(i32 32)
%ptr = alloca i8*
store i8* %value, i8** %ptr
call void @llvm.gcroot(i8** %ptr, i8* null)
ret i32 0
}
-----------------------------------------------------------------------
I am building and running it with:
$ llvm-as test.ll
$ lli test.bc
And the resulting stack trace is:
-----------------------------------------------------------------------
0 libLLVM-2.8.so 0x0000003cc36eee9f
1 libLLVM-2.8.so 0x0000003cc36ef99a
2 libpthread.so.0 0x0000003cc200f4a0
3 libLLVM-2.8.so 0x0000003cc33360dd
llvm::StructType::StructType(llvm::LLVMContext&, std::vector<llvm::Type
const*, std::allocator<llvm::Type const*> > const&, bool) + 237
4 libLLVM-2.8.so 0x0000003cc3337c95
llvm::StructType::get(llvm::LLVMContext&, std::vector<llvm::Type const*,
std::allocator<llvm::Type const*> > const&, bool) + 533
5 libLLVM-2.8.so 0x0000003cc3242d58
6 libLLVM-2.8.so 0x0000003cc318f09e
7 libLLVM-2.8.so 0x0000003cc3330628
llvm::FPPassManager::runOnFunction(llvm::Function&) + 424
8 libLLVM-2.8.so 0x0000003cc33307cb
llvm::FunctionPassManagerImpl::run(llvm::Function&) + 91
9 libLLVM-2.8.so 0x0000003cc33309bd
llvm::FunctionPassManager::run(llvm::Function&) + 173
10 libLLVM-2.8.so 0x0000003cc33e8647
llvm::JIT::jitTheFunction(llvm::Function*, llvm::MutexGuard const&) + 39
11 libLLVM-2.8.so 0x0000003cc33e8a2f
llvm::JIT::runJITOnFunctionUnlocked(llvm::Function*, llvm::MutexGuard
const&) + 15
12 libLLVM-2.8.so 0x0000003cc33e8cde
llvm::JIT::getPointerToFunction(llvm::Function*) + 606
13 libLLVM-2.8.so 0x0000003cc33ea253
llvm::JIT::runFunction(llvm::Function*, std::vector<llvm::GenericValue,
std::allocator<llvm::GenericValue> > const&) + 67
14 libLLVM-2.8.so 0x0000003cc336ad4a
llvm::ExecutionEngine::runFunctionAsMain(llvm::Function*,
std::vector<std::string, std::allocator<std::string> > const&,
char
const* const*) + 1130
15 lli 0x0000000000404cd6 main + 2054
16 libc.so.6 0x0000003cc1c1ec5d __libc_start_main + 253
17 lli 0x0000000000403689
Stack dump:
0. Program arguments: lli test.bc
1. Running pass 'Lower Garbage Collection Instructions' on function
'@main'
-----------------------------------------------------------------------
A similar stack trace is generated when running llc instead. Any ideas?
Thanks!
--trevor
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