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  • Glasgow Haskell Compiler
  • GHCGHC
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  • #8028
Closed
Open
Created Jul 01, 2013 by Krzysztof Gogolewski@monoidalDeveloper

Panic on degenerate closed type family

Creating a degenerate closed type family via TH gives a panic in toBranchList.

module T where

import Language.Haskell.TH

x = do n <- newName "F"
       return [ClosedTypeFamilyD n [] Nothing []]
module A where

import T

$(x)
Trac metadata
Trac field Value
Version 7.7
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler (Type checker)
Test case
Differential revisions
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