2 Commits

Author	SHA1	Message	Date
Colin Walters	9169268c31	rust: Support make dist -> cargo vendor ... What we do here basically is set things up in a `dist-hook` so that our Rust sources are vendored at `dist` time. This gives us a single tarball still, and ideally should be transparent to downstream builders, as long as they have the `cargo/rust` toolchain. Closes: #669 Approved by: jlebon	2017-02-07 16:50:37 +00:00
Colin Walters	d894f609db	oxidation: Add implementation of bupsplit in Rust ... This is an initial drop of "oxidation", or adding implementation of components in Rust. The bupsplit code is a good target - no dependencies, just computation. Translation into Rust had a few twists - - The C code relies a lot on overflowing unsigned ints, and also on the C promotion rules for e.g. `uint8_t -> int32_t` - There were some odd loops that I introduced bugs in while translating...in particular, the function always returns `len`, but I mistakenly translated to `len+1`, resulting in an OOB read on the C side, which was hard to debug. On the plus side, an off-by-one array indexing in the Rust code paniced nicely. In practice, we'll need a lot more build infrastructure to make this work, such as using `cargo vendor` when producing build artifacts for example. Also, Cargo is yet another thing we need to cache. Where do we go with this? Well, I think we should merge this, it's not a lot of code. We can just have it be an alternative CI target. Should we do a lot more right now? Probably not immediately, but I find the medium/long term prospects pretty exciting! Closes: #656 Approved by: jlebon	2017-02-03 14:29:00 +00:00