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  • Glasgow Haskell CompilerGlasgow Haskell Compiler
  • GHCGHC
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  • #5976
Closed
Open
Issue created Mar 28, 2012 by SimonMeier@trac-SimonMeier

Panic in a user Template Haskell function is wrongly reported as a GHC bug

GhcBangBug.hs:1:1:ghc: panic! (the 'impossible' happened)

(GHC version 7.4.1 for x86_64-unknown-linux):

Could not convert (Strict,Type) to BangType

(Unpacked,ConT GHC.Types.Int) Language/Haskell/Convert.hs:(64,5)-(65,42): Non-exhaustive patterns in function conv

See attached test file for further information.

Trac metadata
Trac field Value
Version 7.4.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
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Edited Mar 09, 2019 by Simon Peyton Jones
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