type MyRef = ref object
myProp: int
proc doSmt(mr: MyRef) =
mr = MyRef(myProp: 5)
let a = MyRef(myProp: 10)
doSmT a
dHlwZSBNeVJlZiA9IHJlZiBvYmplY3QKICBteVByb3A6IGludAogIApwcm9jIGRvU210KG1yOiBNeVJlZikgPQogIG1yID0gTXlSZWYobXlQcm9wOiA1KQogIApsZXQgYSA9IE15UmVmKG15UHJvcDogMTApCmRvU21UIGE=