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Kind checking bugfix (#4356) and preventing wanteds from rewriting wanteds
[ghc-hetmet.git]
/
compiler
/
typecheck
/
TcMType.lhs
diff --git
a/compiler/typecheck/TcMType.lhs
b/compiler/typecheck/TcMType.lhs
index
950d733
..
65330ac
100644
(file)
--- a/
compiler/typecheck/TcMType.lhs
+++ b/
compiler/typecheck/TcMType.lhs
@@
-35,7
+35,7
@@
module TcMType (
--------------------------------
-- Instantiation
tcInstTyVar, tcInstTyVars, tcInstSigTyVars,
--------------------------------
-- Instantiation
tcInstTyVar, tcInstTyVars, tcInstSigTyVars,
- tcInstType, tcInstSigType,
+ tcInstType, tcInstSigType, instMetaTyVar,
tcInstSkolTyVars, tcInstSkolTyVar, tcInstSkolType,
tcSkolSigType, tcSkolSigTyVars,
tcInstSkolTyVars, tcInstSkolTyVar, tcInstSkolType,
tcSkolSigType, tcSkolSigTyVars,
@@
-305,6
+305,7
@@
newMetaTyVar meta_info kind
; let name = mkSysTvName uniq fs
fs = case meta_info of
TauTv -> fsLit "t"
; let name = mkSysTvName uniq fs
fs = case meta_info of
TauTv -> fsLit "t"
+ TcsTv -> fsLit "u"
SigTv _ -> fsLit "a"
; return (mkTcTyVar name kind (MetaTv meta_info ref)) }
SigTv _ -> fsLit "a"
; return (mkTcTyVar name kind (MetaTv meta_info ref)) }