Added struct lifetime test

src/core/CompileAssign.go

@@ -39,6 +39,9 @@ func (f *Function) CompileAssign(node *ast.Assign) error {
 	case *eval.Register:
 		f.Execute(operation, leftValue.Register, right)
 	case *eval.Memory:
+		// TODO: Reservation needs to be canceled on defer
+		f.CurrentScope().Reserve(leftValue.Memory.Base)
+
 		if operation.Kind == token.Assign {
 			rightValue, err := f.Evaluate(right)