malloc(): memory corruption

What may cause this difference?

Basically, the memory allocator allocates pages of memory at once for use by programs, and it gives you a pointer within them (making sure the following space is free for use). Since these pages are usually bigger than 8KiB, you have no issue in your mini-program. But if a larger program is allocating larger amounts of memory and writing further and further past the end of your allocated space, then you’ll end up attempting to write into unallocated memory (or memory used by another program!), thus corrupting memory.

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