PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> The reproduced script is as above. There is one out parameter in the two
> procedures. In the initial state, we make their types do not match and call
> the fisrt procedure which internally calls the other procedure. Then we will
> get "procedure parameter "r1" is an output parameter but corresponding
> argument is not writable". After this, we drop procedure + create procedure
> for p2. In this time, we re-call the fisrt procedure，we will get "cache
> lookup failed for function".
Fixed, thanks for the report!
regards, tom lane