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The first one would be caught in Rust as it has no integer -> boolean automatic conversions (similar to Java). The second one could only arise with unsafe poin

• masklinn 11y ago
  > The second one could only arise with unsafe pointers in Rust, as safe code uses slices, combining the base pointer and the element count in a single value. OTOH the point here is to pass a preallocated but "uninitialised" buffer to the callee, which Rust wouldn't allow with slices, unless you created a slice from a raw allocation (I don't know if that's defined behaviour, though I guess you could do that safely by passing in a Write rather than the slice itself, but then you're Write-ing to a slice which has… interesting behaviour)