couldn't get cmd pointer (substituting NULL): extracting data from value failed Couldn't materialize

今天再调试程序的时候 po 一个变量出现这个错误   couldn't get cmd pointer (substituting NULL): extracting data from value failed Couldn't materialize 其他的可以进行 网上查了一下 说是工程编译的目标类型是release 应该是debug  解决方法很简单 ： product－－scheme －

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