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| author | Simon Peyton Jones <simonpj@microsoft.com> | 2016-07-01 22:33:33 +0100 |
|---|---|---|
| committer | Simon Peyton Jones <simonpj@microsoft.com> | 2016-07-05 13:54:54 +0100 |
| commit | 85aa6ef09346e841abf4e089b24c7f783286cd74 (patch) | |
| tree | 7ed14c467fb650479acb542d001a74f688948d0e /compiler/types/Class.hs | |
| parent | e10497b9a3622265b88caa60590ed620ff3d33e2 (diff) | |
| download | haskell-85aa6ef09346e841abf4e089b24c7f783286cd74.tar.gz | |
Check generic-default method for ambiguity
Fixes Trac #7497 and #12151. In some earlier upheaval I introduced
a bug in the ambiguity check for genreric-default method.
This patch fixes it. But in fixing it I realised that the
sourc-location of any such error message was bogus, so I fixed
that too, which involved a slightly wider change; see the
comments with TcMethInfo.
Diffstat (limited to 'compiler/types/Class.hs')
| -rw-r--r-- | compiler/types/Class.hs | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/compiler/types/Class.hs b/compiler/types/Class.hs index a8626db407..169f91d3ba 100644 --- a/compiler/types/Class.hs +++ b/compiler/types/Class.hs @@ -10,7 +10,7 @@ module Class ( ClassOpItem, ClassATItem(..), ClassMinimalDef, - DefMethInfo, pprDefMethInfo, defMethSpecOfDefMeth, + DefMethInfo, pprDefMethInfo, FunDep, pprFundeps, pprFunDep, @@ -110,14 +110,6 @@ data ClassATItem type ClassMinimalDef = BooleanFormula Name -- Required methods --- | Convert a `DefMethInfo` to a `DefMethSpec`, which discards the name field in --- the `DefMeth` constructor of the `DefMeth`. -defMethSpecOfDefMeth :: DefMethInfo -> Maybe (DefMethSpec Type) -defMethSpecOfDefMeth meth - = case meth of - Nothing -> Nothing - Just (_, spec) -> Just spec - {- Note [Associated type defaults] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |