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C Programming
How to know the memory pointed by a ptr is freed?
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[QUOTE="Flash Gordon, post: 2386769"] For all you know this might only work on Sundays. It is undefined behaviour and as has been discussed here there is NO standard way to determine if the object a pointer points to has been freed or not. In fact, even with your specific implementation I am willing to bet that there are situations where (unsigned*)p)[-1] would actually point in to another object. [/QUOTE]
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How to know the memory pointed by a ptr is freed?
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