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Fix check of rhs of type family instances (#2157)
[ghc-hetmet.git]
/
compiler
/
typecheck
/
TcTyClsDecls.lhs
diff --git
a/compiler/typecheck/TcTyClsDecls.lhs
b/compiler/typecheck/TcTyClsDecls.lhs
index
635fef9
..
4a2a289
100644
(file)
--- a/
compiler/typecheck/TcTyClsDecls.lhs
+++ b/
compiler/typecheck/TcTyClsDecls.lhs
@@
-286,8
+286,7
@@
tcFamInstDecl1 (decl@TySynonym {tcdLName = L loc tc_name})
; t_typats <- mapM tcHsKindedType k_typats
; t_rhs <- tcHsKindedType k_rhs
; t_typats <- mapM tcHsKindedType k_typats
; t_rhs <- tcHsKindedType k_rhs
- -- (3) check that
- -- - check the well-formedness of the instance
+ -- (3) check the well-formedness of the instance
; checkValidTypeInst t_typats t_rhs
-- (4) construct representation tycon
; checkValidTypeInst t_typats t_rhs
-- (4) construct representation tycon