[GHC] #10134: Pattern Matching Causes Infinite Type Error

[GHC]

#10134: Pattern Matching Causes Infinite Type Error
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        Reporter:  dongen            |                   Owner:
            Type:  bug               |                  Status:  closed
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:  fixed             |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by simonpj):

 * status:  new => closed
 * resolution:   => fixed


Comment:

 Wonky or not, GHC ought to be able to solve `t0 ~ (t0 + 1) - 1`.

 And indeed it is fine with GHC 7.10 and HEAD.

 So I'll add this nicely-reduced test (thank you) as a regression test, and
 close the ticket.

 I hope that CLASH compiles ok with 7.10!

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10134#comment:21>
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