pcbnew crash if "backing" up and place via

[Nicholas Savenlid]

so lets try to explain:

1 track on F.fab already in place.

Tracks end mid air.

I want to continue routing on this track
(0.1mm wide)

but i want to place a via 1 step up the trace.

so i try to route the track backwards to make it shorter (0.05mm grid)
1 step diagonally up to the left.

but the trace budge and will not let itself be shortedned in lenght just because i trace backwards over itself,

I think to myself, ok no problem, i put down my via here and cut the remainder later.

crash.

[Nicholas Savenlid (nicholas-z)]

Application: kicad
Version: (2017-09-19 revision dddaa7e69)-makepkg, release build
Libraries:
    wxWidgets 3.0.3
    libcurl/7.54.1 OpenSSL/1.0.2l zlib/1.2.11 libssh2/1.8.0 nghttp2/1.23.1 librtmp/2.3
Platform: Windows 7 (build 7601, Service Pack 1), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.3 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.60.0
    Curl: 7.54.1
    Compiler: GCC 7.1.0 with C++ ABI 1011

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_SPICE=ON

[Tomasz Wlostowski (twlostow)]

On 05.10.2017 19:00, Nicholas Savenlid wrote:
> Public bug reported:
>
> so lets try to explain:
>
> 1 track on F.fab already in place.
>
> Tracks end mid air.
>
> I want to continue routing on this track
> (0.1mm wide)
Any chance you can record a video and/or a stack trace?

Tom

[Nicholas Savenlid (nicholas-z)]

This one still haunts me to this day, its the only bug in pcbnew that crash otherwise pcbnew is very stable under windows.

I can reproduce this one 100% now (again) if someone wants the design to try it out for yourselves.

I will not drop the design here, but i can email it, its not public domain.

Application: kicad
Version: (2018-01-30 revision 342197bb3)-makepkg, release build
Libraries:
    wxWidgets 3.0.3
    libcurl/7.54.1 OpenSSL/1.0.2l zlib/1.2.11 libssh2/1.8.0 nghttp2/1.23.1 librtmp/2.3
Platform: Windows 7 (build 7601, Service Pack 1), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.3 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.60.0
    Curl: 7.54.1
    Compiler: GCC 7.1.0 with C++ ABI 1011

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_SPICE=ON

[Nicholas Savenlid (nicholas-z)]

video attached

trying to put down a via where pcbnew dont want you to put it down is a sure way to crash it.

[Maciej Suminski (orsonmmz)]

Nicholas, would you send me the board? My e-mail address is available on my launchpad profile page (https://launchpad.net/~orsonmmz).

[Nicholas Savenlid (nicholas-z)]

User information
Launchpad Id:
orsonmmz
Email:
No public address provided.

Member since:
2013-03-12

cant find your email

[Maciej Suminski (orsonmmz)]

Sorry, it is maciej<dot>suminski<at>cern<dot>ch

[Maciej Suminski (orsonmmz)]

Nicholas, thank you - I got your PCB. I noticed that you are using two weeks old build and there were several fixes to PNS, which may have solved the problem.

I cannot recreate the crash while trying to follow the steps presented in the video. I did my best to select the same settings (starting layer, grid size, via location, highlight collision mode), but it always worked fine. Could you try a newer build?

[Maciej Suminski (orsonmmz)]

I am going to revert to 342197bb3 to see if I can reproduce the crash there.

[Maciej Suminski (orsonmmz)]

Ok, I just tried 342197bb3 and cannot reproduce the crash either, so it means that most likely I am unable to recreate the exact conditions. In such case I rely on your further tests.

[Nicholas Savenlid (nicholas-z)]

ok

here is another video showing same problem

recorded earlier

[Nicholas Savenlid (nicholas-z)]

first i could not recreate it but then i look my old vdeio and no problem

try to wedge the via between 2 traces

BOOM

[Nicholas Savenlid (nicholas-z)]

new video on the the design i sent you

[Maciej Suminski (orsonmmz)]

Is it the newest nightly build? I just exactly followed your actions, yet it works here. Tested on Linux and Windows 7 x86_64.

[Maciej Suminski (orsonmmz)]

Does it also happen if you open the board in pcbnew standalone?

[Nicholas Savenlid (nicholas-z)]

not sure what standalone means in this context or how its invoked.
i always start pcbnew from main menu, never from within schematic.

used version =

Application: kicad
Version: (2018-01-30 revision 342197bb3)-makepkg, release build
Libraries:
    wxWidgets 3.0.3
    libcurl/7.54.1 OpenSSL/1.0.2l zlib/1.2.11 libssh2/1.8.0 nghttp2/1.23.1 librtmp/2.3
Platform: Windows 7 (build 7601, Service Pack 1), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.3 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.60.0
    Curl: 7.54.1
    Compiler: GCC 7.1.0 with C++ ABI 1011

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_SPICE=ON

[Nicholas Savenlid (nicholas-z)]

I did watch your video

its amazing to see

it would have crashed 100% at my end.

I did update to latest version, it does not crash anymore.

Application: kicad
Version: (2018-02-15 revision 29b28de31)-makepkg, release build
Libraries:
    wxWidgets 3.0.3
    libcurl/7.54.1 OpenSSL/1.0.2l zlib/1.2.11 libssh2/1.8.0 nghttp2/1.23.1 librtmp/2.3
Platform: Windows 7 (build 7601, Service Pack 1), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.3 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.60.0
    Curl: 7.54.1
    Compiler: GCC 7.1.0 with C++ ABI 1011

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_SPICE=ON

[Maciej Suminski (orsonmmz)]

You can launch pcbnew either from KiCad launcher (project manager) or directly from the Start menu, the latter is standalone.

I think we can mark this bug as fixed, unless you find some other way to crash pcbnew. Thank you for your patience and help investigating the problem.