Lower function crash in C++ API

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Continuing the discussion from Lower function crash in C++ API:

Thanks a lot, it’s really useful, I use the following code, it’s also worked.

	// define shape
	auto n = tvm::var("n");
	tvm::Array<tvm::Expr> shape;
	shape.push_back(n);

	// define algorithm
	auto A = tvm::placeholder(shape, tvm::Float(32), "A");
	auto B = tvm::placeholder(shape, tvm::Float(32), "B");
	tvm::Tensor C = tvm::compute(A->shape, [&A, &B](tvm::Expr i) { return A[i] + B[i]; }, "C");

	// set schedule
	tvm::Schedule s = tvm::create_schedule({ C->op });

//	tvm::BuildConfig config(tvm::BuildConfigNode());
	tvm::BuildConfig config(std::make_shared<tvm::BuildConfigNode>());
	auto target = tvm::Target::create("llvm");
	auto target_host = tvm::Target::create("llvm");
	auto args = tvm::Array<tvm::Tensor>({ A, B, C });

	// it doesn't work, what's going on??
	std::unordered_map<tvm::Tensor, tvm::Buffer> binds;
	tvm::Array<tvm::LoweredFunc> lowered = tvm::lower(s, args, "fadd", binds, config);
	tvm::runtime::Module mod = tvm::build(lowered, target, target_host, config);
	auto fadd = mod.GetFunction("fadd", true);
	std::vector<tvm::runtime::Module> imported_modules = mod->imports();
	if (imported_modules.empty())
	{
		std::cout << "Import mode failed" << std::endl;
	}
	else
	{
		std::cout << imported_modules[0]->GetSource() << std::endl;
	}

	return 0;