#4127: Template haskell instance declaration quotations with members don't work
in
ghci
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Reporter: lilac | Owner:
Type: bug | Status: closed
Priority: normal | Milestone: 6.14.1
Component: Template Haskell | Version: 6.12.1
Resolution: fixed | Keywords:
Difficulty: | Os: Unknown/Multiple
Testcase: ghci/scripts/T4127 | Architecture: Unknown/Multiple
Failure: None/Unknown |
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Comment(by lilac):
I don't have a GHC 6.13 checkout to test with; is this the same bug?
{{{
Prelude Language.Haskell.TH> runQ $ [d| f = undefined; class Foo x where {
f :: x -> x }; instance Foo Int where { f = id } |]
<interactive>:1:70:
Warning: No explicit method nor default method for `f'
In the instance declaration for `Foo Int'
In the Template Haskell quotation
[d| f = undefined
class Foo x where { f :: x -> x; }
instance Foo Int where
{ f = id } |]
In the second argument of `($)', namely
`[d| f = undefined
class Foo x where { f :: x -> x; }
instance Foo Int where
{ f = id } |]'
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4127#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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