Regression when building the 'sizes' application
I have a package on Hackage called sizes
. It builds fine with GHC 7.8.2, but when building with 7.8.3 I get:
ghc: panic! (the 'impossible' happened)
(GHC version 7.8.3 for x86_64-apple-darwin):
make_exp (App _ (Coercion _))