#2101: Allow some form of type-level lemma
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Reporter: guest | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.8.2
Severity: normal | Resolution:
Keywords: | Testcase:
Architecture: Unknown | Os: Unknown
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Comment (by Isaac Dupree):
can `cat_nil` already be optimized away by `ghc -O`? Or might it return
`_|_`? (is it possible for its recursion not to terminate?)
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2101#comment:1>
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