GHCi reports too few instances
GHCi aspires to report all instances that can be written
unqualified in the current scope; but it doesn't.
| ~% ghci
| ___ ___ _
| / _ \ /\ /\/ __(_)
| / /_\// /_/ / / | | GHC Interactive, version 6.4, for
Haskell 98.
| / /_\\/ __ / /___| | http://www.haskell.org/ghc/
| \____/\/ /_/\____/|_| Type :? for help.
|
| Loading package base-1.0 ... linking ... done.
|
| Prelude> :i Bool
| data Bool = False | True -- <wired into compiler>
| instance Eq Bool -- Imported from GHC.Base
| instance Ord Bool -- Imported from GHC.Base
|
| Prelude> :i Bool
| data Bool = False | True -- <wired into compiler>
| instance Bounded Bool -- Imported from
GHC.Enum
| instance Enum Bool -- Imported from
GHC.Enum
| instance Eq Bool -- Imported from GHC.Base
| instance Ord Bool -- Imported from GHC.Base
| instance Read Bool -- Imported from GHC.Read
| instance Show Bool -- Imported from GHC.Show
Trac metadata
Trac field |
Value |
Version |
None |
Type |
Bug |
TypeOfFailure |
OtherFailure |
Priority |
low |
Resolution |
ResolvedFixed |
Component |
GHCi |
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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