Explicitly initialise the has_output flag to something nonsense, and then check for it afterwards, to make sure the user has initialised it.
Explicitly initialise the has_output flag to something nonsense, and then
check for it afterwards, to make sure the user has initialised it.

live-clones/libadjoint,live-clones/libadjoint,live-clones/libadjoint,live-clones/libadjoint