On Mon, Nov 20, 2017 at 9:27 PM Peter Todd <p...@petertodd.org> wrote:
> On Sat, Nov 18, 2017 at 01:46:10AM +0000, Devrandom wrote: > > I made some progress with walking back the Rust version, getting to > > 2016-04-01 nightly (pre-1.8.0). A rough cut of what I did is here: > > > > > https://github.com/devrandom/powersoftau/compare/experiment-devrandom-vendor...devrandom:experiment-devrandom-old-compile > > > > This doesn't quite get us to when zcash was announced in January of 2016. > > To make further progress, I will look into backporting the question-mark > > operator from > > > https://github.com/rust-lang/rust/commit/210dd611aa1bd80ed2f4e663b3c4b87b3cea069a > > to > > an earlier nightly. > > Not sure how familiar you are with Rust, but FWIW it might be easier to > just > mechanically replace the question mark operator with the try! macro. For > example, this line: > > let alpha_g1_s = read_uncompressed(reader)?; > > simply becomes: > > let alpha_g1_s = try!(read_uncompressed(reader)); > > This has the advantage of having compatibility with potentially quite old > versions of Rust. > Will try that if the mrustc path continues to be blocked for longer than a few days.
