(Control.Category.id @(->) >>=) causes GHC panic
$ ghci -ignore-dot-ghci -XTypeApplications
GHCi, version 8.3.20170605: http://www.haskell.org/ghc/ :? for help
Prelude> import qualified Control.Category as Cat
Prelude Cat> :t (Cat.id @(->) >>=)
ghc: panic! (the 'impossible' happened)
(GHC version 8.3.20170605 for x86_64-unknown-linux):
repSplitAppTy_maybe
a0_a1qW[tau:2]
a0_a1qW[tau:2]
Call stack:
CallStack (from HasCallStack):
prettyCurrentCallStack, called at compiler/utils/Outputable.hs:1133:58 in ghc:Outputable
callStackDoc, called at compiler/utils/Outputable.hs:1137:37 in ghc:Outputable
pprPanic, called at compiler/types/Type.hs:699:5 in ghc:Type
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Prelude Cat>
Trac metadata
| Trac field |
Value |
| Version |
8.2.1 |
| Type |
Bug |
| TypeOfFailure |
OtherFailure |
| Priority |
normal |
| Resolution |
Unresolved |
| Component |
Compiler |
| Test case |
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| Differential revisions |
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| BlockedBy |
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| Related |
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| Blocking |
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| CC |
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| Operating system |
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| Architecture |
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