#7540: Panic on type inference with vectorised parallel arrays
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Reporter: tinctorius | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.6.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Compile-time crash | Blockedby:
Blocking: | Related:
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Comment(by tinctorius):
An even simpler example:
{{{
{-# LANGUAGE CPP #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE ParallelArrays #-}
module Y where
import Data.Array.Parallel
#ifndef BUG
func :: Bool -> [:[:a:]:]
#endif
func True = [:[::]:]
func False = func True
}}}
Taking `[:[::]:]` out to its own variable doesn't change a thing, unless
it's given a monomorphic type signature.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7540#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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