ghc: panic! (the 'impossible' happened) translateConPatVec: lookup

*Main> price Stock{name=name,ric=ric,price=price} = price
ghc: panic! (the 'impossible' happened)
  (GHC version 8.0.1 for x86_64-unknown-mingw32):
	translateConPatVec: lookup

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

Edited Mar 10, 2019 by Ben Gamari

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