Missing context in Generics example

The Haddocks for GHC.Generics give an example of a default implementation using Generics:

class Encode a where
  encode :: a -> [Bool]
  default encode :: (Generic a) => a -> [Bool]
  encode x = encode' (from x)

The default signature is missing some context. It should read

  default encode :: (Generic a, Encode' (Rep a)) => a -> [Bool]

Trac metadata

Trac field	Value
Version	7.10.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	high
Resolution	Unresolved
Component	Core Libraries
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	ekmett
Operating system
Architecture

changed milestone to %8.0.1

changed weight to 7

added Tbug Trac import core libraries labels

I've set a short milestone and high priority because this should be an extremely quick fix. I'd submit the patch myself, but my local copy of the source is outdated and I've forgotten some procedures.

assigned to @bgamari

mentioned in commit 91dcc655

closed

I've merged this into master and ghc-8.0.

Trac metadata

Trac field	Value
Resolution	Unresolved → ResolvedFixed

added documentation label

added Phigh label