An array is sizeof(union alloc_header) + length * sizes[type] bytes
The problem is spotty surveillance by under-resourced regulators.
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→ 0x5B8 (GATE_HANDLER)
Implementers shouldn't need to jump through these hoops. When you find yourself needing to relax or bypass spec semantics just to achieve reasonable performance, that's a sign something is wrong with the spec itself. A well-designed streaming API should be efficient by default, not require each runtime to invent its own escape hatches.