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Philonous/gist:1b9a08fc4f74a68a9b96953f870136ca

Created January 19, 2018 15:34
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GHCi exception
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gistfile1.txt
Prelude> :set -fbreak-on-exception
Prelude> error "abc"
Stopped in <exception thrown>, <unknown>
_exception :: e = _
[<unknown>] [<unknown>] Prelude> :steplocal
*** Exception: Pattern match failure in do expression at ghc/GHCi/UI.hs:3149:12-18
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