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Question: As a follow up to askjf.com/index.php?q=660s, does the C runtime compact the heap to make room for new allocations as space runs out?
Asked by Will (70.173.145.x) on October 22 2014, 5:23am
Reply on October 22 2014, 12:46pm:

The heap can't really be compacted, because all of the addresses must remain the same. So yeah, you can in theory end up with a fragmented heap where you have a lot of wasted memory, though in practice I'm not sure how often this really happens...

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