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C Programming
How to know the memory pointed by a ptr is freed?
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[QUOTE="Ravi Uday, post: 2383941"] Thats what the OP wanted, to know whether the pointer is valid. I think the system/OS can fill the first word in the header of a freed block with some bit pattern (0xdeadbeef) before returning the call (free()) to the user So seeing the memory dump of the pointer might be of clue. Of-course you shouldnt de-reference the pointer once the free() returns ! [/QUOTE]
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How to know the memory pointed by a ptr is freed?
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