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Diffstat (limited to 'compiler/typecheck/TcCanonical.hs')
| -rw-r--r-- | compiler/typecheck/TcCanonical.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/typecheck/TcCanonical.hs b/compiler/typecheck/TcCanonical.hs index 8e6e18f917..dc85fe237c 100644 --- a/compiler/typecheck/TcCanonical.hs +++ b/compiler/typecheck/TcCanonical.hs @@ -1294,7 +1294,7 @@ canDecomposableTyConAppOK ev eq_rel tc tys1 tys2 -> do { let ev_co = mkCoVarCo evar ; given_evs <- newGivenEvVars loc $ [ ( mkPrimEqPredRole r ty1 ty2 - , evCoercion $ mkNthCo i ev_co ) + , evCoercion $ mkNthCo r i ev_co ) | (r, ty1, ty2, i) <- zip4 tc_roles tys1 tys2 [0..] , r /= Phantom , not (isCoercionTy ty1) && not (isCoercionTy ty2) ] |