Problem: a new member cannot be added to struct flux_watcher_ops as discussed in #4156 without breaking ABI because the public function flux_watcher_create() takes a pointer to one as an argument.
To make this less brittle, we could add some padding to the structure.
However I'm not sure there was ever any demand for creating new flux watchers out of tree, and we might want to make the ops struct and associated functions private until they are stable and there is demonstrated need for them out of tree.
Problem: a new member cannot be added to
struct flux_watcher_opsas discussed in #4156 without breaking ABI because the public functionflux_watcher_create()takes a pointer to one as an argument.To make this less brittle, we could add some padding to the structure.
However I'm not sure there was ever any demand for creating new flux watchers out of tree, and we might want to make the ops struct and associated functions private until they are stable and there is demonstrated need for them out of tree.