certain operations in new integer-gmp are too lazy
This came up in #ghc the other day.
rwbarton@morphism:~$ ghci-7.10.1 GHCi, version 7.10.1: http://www.haskell.org/ghc/ :? for help Prelude> undefined * 0 0
For consistency not just with
Int, but also other integer-* implementations, this should be undefined.
Also affected is for example