julia

ee7e8147 - stacktraces: Add an extension point for printing custom-owner CIs (#58430)

stacktraces: Add an extension point for printing custom-owner CIs (#58430) On Julia master, it is possible to add custom CodeInstances with non `nothing` owner to the runtime system (e.g. by invoking them or with custom AbstractInterpreters). However, the backtrace printing for these custom code instances was not in any way distinguished from the backtrace printing for an ordinary code instance of the same method instance, making it sometimes hard to determine what code instance a particular backtrace was referring to (if the downstream compiler was making many different code instances for a particular MethodInstance). Remidy this by adding an explicit extension point that can be overwritten to modify the printing of these custom-owner CodeInstances.