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  • #9705

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Opened Oct 19, 2014 by Krzysztof Gogolewski@monoidal
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Panic on a pattern synonym in a class

This silly code causes a panic in rnMethodBind:

{-# LANGUAGE PatternSynonyms #-}
class C a where
  pattern P = ()
Trac metadata
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Version 7.8.3
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
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7.8.4
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7.8.4
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5
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bug compiler crash P::normal Trac import typechecker
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Reference: ghc/ghc#9705