Cracks take time to grow to a length that can result in failure. It's useful to be aware of the potential problem and periodically examine for possible cracks. Also listen out for any creaks or unusual noises.

The photos here https://www.ebay.com/itm/204519106981, for example, show cracking which has not yet resulted in failure. In that particular circumstance I would be tempted to apply external reinforcement by removing the paint, wrapping tightly with steel wire, smothering the wire with epoxy resin glue to both protect it and bond it to the metal and then repainting. A similar approach could be used where cracking might occur.