gf-3.1.6: testsuite/compiler/update/ArrityCheck.gfs.gold

C:\gf_3\testsuite\compiler\update\ArrityCheck.gf:6:1: cannot unify the informations

    fun f : Int -> Int -> Int ;

    def f 0 = \x -> x ;

and

    def f 1 1 = 0 ;

in module ArrityCheck