Jason - that's a bug. Thanks for finding it. https://github.com/gnuradio/gnuradio/issues/7013
On Mon, Dec 18, 2023 at 1:49 PM Jeff Long <willco...@gmail.com> wrote: > Thanks, we'll take a look at it. There were some recent changes in that > area. > > On Mon, Dec 18, 2023 at 1:34 PM Merlo, Jason <merlo...@msu.edu> wrote: > >> Hi All, >> >> I decided to give 3.10.9.0-rc1 a try today and noticed that message >> domain signals are shown as red broken connections when reloading the .grc >> file (e.g. when saving the file, opening a saved file, or when reloading >> blocks). Is anyone else experiencing this issue? >> >> I’ve attached a dummy flow graph (and a screenshot) to illustrate the >> issue. I also reverted back to 3.10.8.0 and the flow graph (and other more >> complex flow graphs) work as expected >> >> The error message generated for each virtual sink/source is: No >> connection known between domains “stream” and “message”. >> >> It seems to pertain to the “validate” function [1] in “Connection.py” >> checking the types of the connections, but I’m not very familiar with the >> inner workings of GNU Radio and wasn’t able to track down where/how those >> types are set for the virtual sink/source blocks. >> >> Thanks! >> Jason >> >> [1] >> https://github.com/gnuradio/gnuradio/blob/6404f371abb97f282aa1aa270837ffa9f0ddce84/grc/core/Connection.py#L117 >> >>