Re: writing to freed memory--issues

Jordan Abel wrote:


3) Why does malloc fail for 2^28 and 2^29, but succeed for 2^30?

magic. maybe 2^30 is where it switches to using mmap. no idea.

When you play with undefined behavior, sometimes you get funny results.

Actually, this one is trivial. The malloc wasn't allocating 2^30, it
was allocating 0, since SIZE*sizeof(int) == 1<<32 == 0.

.

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