Make sure there's no code path where the same object is released more than once. Checkerror code paths.
不要重复释放同一对象。检查异常处理代码的情况。
2
The programming environment of syntax directed is an interactive environment which includes edit, execute and checkerror functions.
语法制导的程序设计环境是一个包括有编辑、执行和查错等工具系统的交互式程序设计环境。
3
Ideally, test cases that checkerror conditions are written separately from the functional test cases and should have steps to verify the error messages and logs.