HEAD gives warnings about code that it generates itself

The HEAD is now giving warnings about code that it generates itself, e.g.

module Q where

data Foo = Bar Int

gives

$ ghc -fforce-recomp -Wall -fgenerics -c q.hs

q.hs:4:5:
    Warning: Definition but no type signature for `Q.$gtoFoo'
             Inferred type: Q.$gtoFoo :: Int -> Foo

q.hs:4:5:
    Warning: Definition but no type signature for `Q.$gfromFoo'
             Inferred type: Q.$gfromFoo :: Foo -> Int

I assume that this is since the change which added the inferred type to the warning, but I haven't confirmed that.

Trac metadata

Trac field	Value
Version	6.7
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler (Type checker)
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown