[GHC] #12557: Regression in type inference with RankNTypes
GHC
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Fri Sep 2 17:53:26 UTC 2016
#12557: Regression in type inference with RankNTypes
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Reporter: slindley | Owner:
Type: bug | Status: closed
Priority: low | Milestone:
Component: Compiler (Type | Version: 8.0.1
checker) | Keywords:
Resolution: invalid | ImpredicativeTypes
Operating System: Unknown/Multiple | Architecture:
Type of failure: GHC rejects | Unknown/Multiple
valid program | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by goldfire):
Yes, that error message is unfortunate. But I agree with 8.0 that your
code should be rejected. I have filed #12563 requesting an error message
improvement.
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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12557#comment:5>
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