#5377: TypeSynonymInstances dysfunctional in ghc-7.2.1-rc1?
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Reporter: hvr | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Linux | Blocking:
Architecture: x86_64 (amd64) | Failure: GHC rejects valid program
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Comment(by hvr):
Oh... I didn't realize that `TypeSynonymInstances` was actually
misbehaving before ghc-7.2 as I didn't fully comprehend that
`TypeSynonymInstances` was ''really'' only meant to accomplish simple
`type`-synonym RHS substitution and nothing beyond that... :-/
Sorry for the noise
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5377#comment:3>
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