If this was Go, instead of making a breaking change they would opt for a linter rule or a go vet directive. This is the sensible approach IMO to handle a hazar

If this was Go, instead of making a breaking change they would opt for a linter rule or a go vet directive. This is the sensible approach IMO to handle a hazardous programming construct. Warn people about it and give them the choice to shoot their foot. But don't break their code.