GDB is a very good performance source-level debugger, it can achieve all the functions of the normal debugger almost, therefore, it is essential in GNU tool chain, GDB has very good performance.
GDB是一种性能很好的源码级调试器，它几乎可以实现普通调试器所具有的全部功能，因此它在GNU工具链中是必不可少的。
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