#4418: Superclass functional dependencies are ignored during instance selection
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Reporter: reinerp | Owner:
Type: bug | Status: merge
Priority: normal | Milestone:
Component: Compiler (Type checker) | Version: 7.1
Keywords: | Testcase:
typecheck/should_compile/T4418
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: GHC rejects valid
program
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Changes (by simonpj):
* status: new => merge
Comment:
Fixed by
{{{
Wed Oct 20 02:09:46 PDT 2010 [email protected]
* Refactor, plus fix Trac #4418
We weren't doing fundeps for derived superclasses
M ./compiler/typecheck/TcInteract.lhs -119 +99
}}}
Pls merge
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4418#comment:2>
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