[LLVMdev] Size of structs & arrays

[Fraser Cormack]

Eli Friedman-2 wrote:
> 
> 
> Try llvm::Constant::getNullValue().
> 
> 

I'm trying this:

llvm::Constant* one =
llvm::Constant::getNullValue(llvm::IntegerType::get(mod->getContext(), 64));
llvm::ConstantInt* two = llvm::ConstantInt::get(mod->getContext(),
llvm::APInt(32, llvm::StringRef("1"), 10));

std::vector<llvm::Value*> indices;	
indices.push_back(one);  indices.push_back(two);
	
llvm::Value* size = builder->CreateGEP(struct_ptr, indices);
llvm::Value* size_int = builder->CreatePtrToInt(size,
llvm::IntegerType::get(mod->getContext(), 64))

And I'm getting the assertion error "Invalid GetElementPtrInst indices for
type!"'. 'struct_ptr' is a pointer to the struct I'm trying to size. I've
also tried using getNullValue on the struct's own type.

Sorry to ask so directly, but I'd quite like to get this sorted.

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