Commit dc8b06e8 authored by Simon Peyton Jones's avatar Simon Peyton Jones
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parent 32ee9b3e
......@@ -805,7 +805,7 @@ zonkFlats binds_var untch cts
isTouchableMetaTyVar untch tv
, not (isSigTyVar tv) || isTyVarTy ty_lhs -- Never unify a SigTyVar with a non-tyvar
, typeKind ty_lhs `tcIsSubKind` tyVarKind tv -- c.f. TcInteract.trySpontaneousEqOneWay
, not (tv `elemVarSet` tyVarsOfType ty_lhs)
, not (tv `elemVarSet` tyVarsOfType ty_lhs) -- Do not construct an infinite type
= ASSERT2( isWantedCt orig_ct, ppr orig_ct )
ASSERT2( case tcSplitTyConApp_maybe ty_lhs of { Just (tc,_) -> isSynFamilyTyCon tc; _ -> False }, ppr orig_ct )
do { writeMetaTyVar tv ty_lhs
......@@ -836,7 +836,7 @@ constraint solving, cannot produce any more interactions in the
constraint solver so it is safe to do it as the very very last step.
We choose therefore to do it during zonking, in the function
zonkFlats. This is in analgoy to the zonking of given flatten skolems
zonkFlats. This is in analogy to the zonking of given "flatten skolems"
which are eliminated in favor of the underlying type that they are
equal to.
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