Bus/hierarchy bug, netlist broken

[Diego Herranz]

Hi, all.

I'm using nightlies and facing a weird bug with buses. I was wondering whether it can be related to recent bus upgrades.

I've got a bus:
ROW0, ROW1, ROW2, ROW3, ROW4, ROW5, ROW6, ROW7, which on the PCB layout becomes
ROW0, ROW0, ROW0, ROW0, ROW0, ROW0, ROW0, ROW7 ???
It seems to be semi-random and I've seen other combinations too.

I've managed to reduce the SCH to a minimal example (attached). Further changes to this seem to fix it somehow, so I couldn't reduce it anymore.
Note that one of the symbols is not on the official library so I've included a local library.
I've tried replacing that symbol for a standard header, but that seems to fix the problem, although I can't see anything wrong with the symbol itself.

I asked on the development mailing list and jp charras confirmed it:

> I confirm there is a serious issue shown by this sample: the netlist is broken.
> Moreover, when I try to add a bus name ("ROW[0..7]") to the bus, Eeschema crashes.
> Looks like the bug has something to do with hierarchical labels.

> I do not see issues with the schematic.

I agree it is a serious one too given it breaks the netlist. I've got a SCH which I can't layout because of this. It's not an important project and that is why I'm using nightlies, but now I can't open the layout on 5.x stable because the format changed :)

Many thanks!

Application: KiCad
Version: 6.0.0-unknown-6b031d9~100~ubuntu16.04.1, release build
Libraries:
    wxWidgets 3.0.2
    libcurl/7.47.0 OpenSSL/1.0.2g zlib/1.2.8 libidn/1.32 librtmp/2.3
Platform: Linux 4.4.0-157-generic x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.2 (wchar_t,wx containers,compatible with 2.8) GTK+ 2.24
    Boost: 1.58.0
    OpenCASCADE Community Edition: 6.8.0
    Curl: 7.47.0
    Compiler: GCC 5.4.0 with C++ ABI 1009
Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[KiCad Janitor (kicad-janitor)]

Fixed in revision ab766e6c1cba700a8a6a506a9e0978369351957a
https://git.launchpad.net/kicad/patch/?id=ab766e6c1cba700a8a6a506a9e0978369351957a

[Diego Herranz (diegoherranz)]

Wow, that was quick.
I'll test it when the nightly gets updated and report back.

Thanks!

[Diego Herranz (diegoherranz)]

I've just tested the updated nightly and it seems to work OK.
Thanks again!

[Jon Evans (craftyjon)]

No problem! Thanks for taking the time to make a test case reproducing this issue, it's very helpful.