#3484: GHC diverges when proving nonequality of types
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Reporter: ryani | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.10.4 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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Conor posted an interesting suggestion for proving type non-equality here:
http://www.nabble.com/Re%3A-Is-it-possible-to-prove-type-*non*-equality-
in-Haskell--p25153135.html
I implemented it on my Nat framework and got GHC to diverge:
{{{
C:\haskell>ghc -c Absurd.hs
stack overflow: use +RTS -K<size> to increase it
}}}
I've attempted to shrink the code as much as possible and still reproduce
the error; attached is the result.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3484>
GHC <http://www.haskell.org/ghc/>
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