Collection of minor adjustments and fixes#8
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Export the core and alloc dependencies for macros to use. There is little harm in re-exporting those dependencies, given that we already depend on them, and on their stability guarantees. This kinda blocks `osi::core` and `osi::alloc` for future use, but that seems ok'ish, and would conflict with current use of `core` and `alloc` inside of `osi`, anyway. Signed-off-by: David Rheinsberg <david@readahead.eu>
Two new helpers to get `MaybeUninit` for any read-only type. This is really useful as source operand to `copy_from_slice()` and similar, if the target is a `MaybeUninit`. Signed-off-by: David Rheinsberg <david@readahead.eu>
Accessing uninitialized data is never safe in Rust. The reason is that some hardware platforms have support for actual hardware markers of uninitialized bytes, and thus LLVM can never provide a way to read such data, even if the target platform would support it. There is an argument to be made for Rust to use something else to model padding bytes, but that is not our decision to make, so lets just not read padding bytes for now. Signed-off-by: David Rheinsberg <david@readahead.eu>
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3 fixes to
osiand a minor addition:as_bytes()to be unsafe, and document why