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Indexing a fixed-length array (I.e. known at compile time) out of bounds is not prohibited at compile time. All array types trigger a task failure on out-of-bounds access (unless you explicitly opt-in to unchecked indexing).

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I was going to ask if array[random_integer()] would compile only some of the time.

Oh thanks for clearing that up! Is there any specific reason why the rust compilier currently doesn't check that a static int accessing into a known length slice doesn't result in a compile error? (I'm only referring to cases where the index you are trying to access is known at compile time as well as the length of the slice)

It would be inconsistent and not really that helpful. How often do you use (invalid) constant indexes with fixed length arrays?

Probably better to handle all out-of-bounds errors the same way.

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