Re: File Source in Hierarchical Block

On Thu, Aug 20, 2020 at 2:21 PM Marcus Müller <mueller@kit.edu> wrote:

Only blocks connected to the global top block get run; your no inputs/no
outputs hier block doesn't get connected to the global top block, and
thus, neither do the "contained" blocks.

GNU Radio supports hierarchical blocks with no inputs or outputs, and has a 1-argument connect() method specifically for connecting them to a containing hier or top block. It is just that GRC neglects to generate code to call connect() for this case. I reported the bug as #2950 and there is a fix that has not been merged, #3007.