The impersonal passive is a familiar construction:
Pugnatur. "There is fighting / people are fighting / etc."
Pugnatum est. "There was fighting / etc."
Here a finite passive verb is being used with an impersonal sense. To what extent can passive infinitives be used in the same way, for example in indirect speech constructions?
I think I've seen examples of the perfect passive infinitive:
Dicit pugnatum esse. "He says there was fighting."
But for some reason, I'm not sure I've ever seen present or future passive infinitives:
Dicit pugnari. "He says there is fighting."
Dicit pugnatum iri. "He says there will be fighting."
There's no particular a priori reason this construction should be limited to finite verbs or to only some tenses of the infinitive, but what does usage say? Are there examples of all tenses of the passive infinitive used impersonally?