arena [Unix] /n./ The area of memory attached to a process by
`brk(2)' and `sbrk(2)' and used by `malloc(3)' as
dynamic storage. So named from a `malloc: corrupt arena'
message emitted when some early versions detected an impossible
value in the free block list. See overrun screw, aliasing
bug, memory leak, memory smash, smash the stack.
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