Difficulty level: Translating Mach data structures that use both C bitfields and #pragma(pack) directives into Rust in a bit-compatible way.
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Replying to @TedMielczarek
@TedMielczarek@pcwalton I'd guess the precise details of how they all interact at the ABI level is just inordinately finicky.1 reply 0 retweets 0 likes
Replying to @TedMielczarek
@tedmielczarek @jswalden Bitfield layout is completely undefined in the C spec, IIRC. In Rust, bitfields are done with a macro.
4:44 PM - 22 Jun 2015
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