#5224: Improve consistency checking for family instances
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Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: highest | Milestone: 7.2.1
Component: Compiler | Version: 7.0.3
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Compile-time performance bug
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Comment(by simonmar):
Replying to [comment:2 daniel.is.fischer]:
> Didn't find this soon enough: as reported in #5232, T3064 and T4801 now
use less than the minimum allowed, additionally, I got an unexpected pass
for !IndTypesPerf. So the issue might be fixed already. Definitely worth a
check, IMO.
There is a temporary workaround in place, Igloo removed the `deriving
Generics` from `Data.Tuple` due to #5227. This accounts for some
unexpected passes and/or failures, some of which I just fixed.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5224#comment:3>
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