### Godot version

4.0.3

### System information

Win7

### Issue description

![image](https://github.com/godotengine/godot/assets/28286958/abec9d3c-e078-424c-9430-d9fe8897aad6)


### Steps to reproduce

1. Create shader
2. Add uint with hex, e.g. 0xffffu

### Minimal reproduction project

N/A
}
			for (int i = 0; i < 4; i++) {
				expression.remove_at(next_op);
			}
		} else {
			if (next_op < 1 || next_op >= (expression.size() - 1)) {
				_set_parsing_error();
				ERR_FAIL_V(nullptr);
			}
			OperatorNode *op = alloc_node<OperatorNode>();
			op->op = expression[next_op].op;
			if (expression[next_op - 1].is_op) {
				_set_parsing_error();
				ERR_FAIL_V(nullptr);
			}
			if (_is_operator_assign(op->op)) {
				String assign_message;
				if (!_validate_assign(expression[next_op - 1].node, p_function_info, &assign_message)) {
					_set_error(assign_message);
					return nullptr;
				}
			}
			if (expression[next_op + 1].is_op) {
				
				
				
				
				_set_parsing_error();
			}
			op->arguments.push_back(expression[next_op - 1].node);