#7550: incorrect bang patterns rejected with "report a ghc bug"
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Reporter: aavogt | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.6.1 | Keywords:
Os: Unknown/Multiple | Architecture:
Unknown/Multiple
Failure: Incorrect warning at compile-time | Blockedby:
Blocking: | Related:
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{{{
{-# LANGUAGE BangPatterns #-}
data E a = E { e :: ! [] a }
{- The current error given is not graceful:
ghc: panic! (the 'impossible' happened)
(GHC version 7.6.1 for x86_64-unknown-linux):
tc_hs_type: bang
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
-}
-- maybe there could be some suggestion that E should have been written
data D a = D { d :: ! ([] a) }
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7550>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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