#5550: GHC infinite loop when compiling vector
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Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.2.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by rl):
I would prefer !SpecConstr to have a cleverer "does it get scrutinised"
analysis which could handle #4448. But I suppose that's not easy. I'm not
really sure what to do here. How about this: !ForceSpecConstr turns off
the scrutinise check but only for non-recursive types? It seems that would
be sufficient to guarantee termination and would still handle #4448.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5550#comment:8>
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