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  • #7681

Closed
Open
Opened Feb 11, 2013 by Krzysztof Gogolewski@monoidalDeveloper

Panic on quoting empty case

With -XEmptyCase on,

Prelude Language.Haskell.TH> runQ [| case 0 of {} |]
ghc: panic! (the 'impossible' happened)
  (GHC version 7.7.20130209 for x86_64-unknown-linux):
	coreList: empty argument
Trac metadata
Trac field Value
Version 7.7
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
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Reference: ghc/ghc#7681