arena: n. [common; Unix] 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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