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by oconnor663
2245 days ago
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You can Box Copy types, yes, but the result is !Copy. So for example, maybe I have a slice of ints, and I'm calling ptr::copy_nonoverlapping on that slice. (Maybe via safe code, like slice::copy_from_slice.) That no longer works; I need new heap allocations for each int. And my slices of ints no longer have a memory layout that's compatible with C, so all ffi breaks? |
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I do think you're correct here, which is that this idea sounds simple but has a lot of edge cases.