Simon Peyton Jones via ghc-devs <ghc-devs@haskell.org> writes:

I'm getting this

Framework failures:

. ./perf/should_run/all.T [] (name 'stats_num_field' is not defined) I think it comes from this:

commit fb669f51b3f2cae79511ac3d1c43939d951b1f69

Author: Tobias Decking <Tobias.Decking@gmail.com>

Date: Thu Dec 6 15:32:18 2018 -0500

Add fusion rules for the zipWith functions in base (#15263)

Yes, it looks like that is the culprit. Looking back at the validation log from when merged this patch, it appears that I observed this too but simply overlooked it. Sorry about that! Fix coming. Cheers, - Ben