[GHC] #8044: "Inaccessible code" error reported in wrong place
GHC
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Tue Jul 9 23:31:17 CEST 2013
#8044: "Inaccessible code" error reported in wrong place
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Reporter: goldfire | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler (Type checker) | Version: 7.7
Resolution: | Keywords: GADTs
Operating System: Unknown/Multiple | Architecture:
Type of failure: None/Unknown | Unknown/Multiple
Test Case: | Difficulty: Unknown
Blocking: | Blocked By:
| Related Tickets:
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Comment (by heisenbug):
I doubt the type family is valid
{{{
type family Frob a where
Frob Int = Int
Frob x = Char
}}}
The second clause should give the same result for `x = Int` than the first
(namely `Int`), but it results in `Char`. Richard can surely express it
better than me, though I wonder why it is not rejected at all?
''(I sincerely hope I did not mess this up!)''
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8044#comment:2>
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