ERC bus member warning on nightly

[DashieV3]

Was trying nightly (PPA, 6.0.0-unknown-27a2b84~100~ubuntu18.04.1) and I'm getting weird warnings in the ERC about BUS members:

"Bus to Wire Entry (...) is connected to Vertical Bus from (...) to (...) (X[Y..Z]) but is not a member of the bus"

The warnings seems present on every bus lines.

I've attached a quick schematic reproducing the issue.

Also related kicad forum topic: https://forum.kicad.info/t/kicad-nightly-erc-bus-member-warning/17343

[KiCad Janitor (kicad-janitor)]

Fixed in revision 256d7b07140a43cd6609920b3ec43e84202d2c0b
https://git.launchpad.net/kicad/patch/?id=256d7b07140a43cd6609920b3ec43e84202d2c0b

[DashieV3 (dashie)]

Ok I confirm this fix the issue, now, in the test project, only A0 errors because it is connected nowhere (this is ok here).

But if I remove the two global labels, and connect the two bus between them, and re-run ERC, all the nets have an error "Bus to wire entry is connected to vertical bus from x to y <no net> but is not a member of the bus". (only one of the two labels for each Axx on the bus have that error)

Is this something expected or a bug (I can open another one then) ?

[Jon Evans (craftyjon)]

Can you post a screenshot or your updated design so that it is clear what is needed to reproduce the behavior you're describing?

[DashieV3 (dashie)]

Yes sorry, here is an updated zip project

[Jon Evans (craftyjon)]

OK, thanks.
This is expected behavior: Buses are not automatically labeled with their contents, so if you just draw graphical bus wires between a bunch of nets as is the case with your A[23..0] nets, there is no way to check whether or not the connection was intended.

To get rid of this error for now, you will need to properly label your bus. In the case of the example design, a label like "A[23..0]" will work.

Sometime during the V6 design cycle it will become possible to disable certain ERC checks if you don't want to label your buses for some reason.

[DashieV3 (dashie)]

Ok that makes sense, thank you for explanation !

Everything is good then.