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  • Glasgow Haskell Compiler
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  • #11549
Closed
Open
Created Feb 06, 2016 by Richard Eisenberg@raeDeveloper

Add -fshow-runtime-rep

As discussed in several interwoven threads (original, café), it has been suggested to add a flag -fshow-runtime-rep. Without this flag enabled, the pretty printer will instantiate any RuntimeRep type parameters to PtrRep Lifted. This has the effect of changing

($) :: forall (r :: RuntimeRep) (a :: *) (b :: TYPE r). (a -> b) -> a -> b

to

($) :: (a -> b) -> a -> b

under the default GHCi settings.

Note that Levity becomes RuntimeRep after #11471 (closed) is complete.

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Version 8.1
Type Bug
TypeOfFailure OtherFailure
Priority highest
Resolution Unresolved
Component Compiler
Test case
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