To stop the execution at the desired location, set a breakpoint at free_list() routine, so that nodes don't get free before you could have a look at their contents.

为了在所需的位置停止执行，在 free_list() 例程上设置一个断点。

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Hook-stop is a special definition that GDB calls at every breakpoint event.

hook - stop是GDB在每次发生断点事件时调用的特殊定义。

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First, start the instrumented program under the debugger and put a breakpoint at purify_stop_here purify API function. The debugger will stop at every purify error message.

首先，在调试器下开始这个仪表化程序，并将一个观察点置于purify_stop_herePurify api函数中。

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