Crash clearing all DRC markers

[Reece Pollack]

Ran several DRC checks including checking all tracks. Clicked on "Clear all markers" and KiCad crashed. No corruption of files, but the .kicad_pcb-bak file hadn't been written at all during the 20-30 minute session.

I am unable to reproduce the problem. The only additional information I can offer is this entry from the system logs:

kernel: kicad[26240]: segfault at 200000006b ip 000000200000006b sp 00007ffff56b5b28 error 14

The segfault address is the same as the instruction pointer, which looks to be a call via a corrupt pointer to me.

Built from sources derived from the following Git commit:
    2cb65f9 Make the Simulator error strings translatable

Application: kicad
Version: (5.0.0-rc2-39-g4cac861), debug build
Libraries:
    wxWidgets 3.0.2
    libcurl/7.47.0 GnuTLS/3.4.10 zlib/1.2.11 libidn/1.32 librtmp/2.3
Platform: Linux 4.13.0-41-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:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_ACTION_MENU=OFF
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[Jeff Young (jeyjey)]

I tried a bit on OSX to reproduce this, with no luck.

Application: kicad
Version: (5.0.0-rc2-49-gd03e92a3a-dirty), debug build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.54.0 LibreSSL/2.0.20 zlib/1.2.11 nghttp2/1.24.0
Platform: Mac OS X (Darwin 17.5.0 x86_64), 64 bit, Little endian, wxMac
Build Info:
    wxWidgets: 3.0.4 (UTF-8,STL containers,compatible with 2.8)
    Boost: 1.66.0
    Curl: 7.57.0
    Compiler: Clang 9.1.0 with C++ ABI 1002

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

[Maciej Suminski (orsonmmz)]

Reece, I have found out that pcbnew indeed crashes when one selects a DRC marker on the board (selecting a marker in the dialog's list will not lead to a crash) and execute 'Delete All Markers'.

Do you think this is what you might have done? If not, is there a chance of getting the board that originally triggered the crash?

[Maciej Suminski (orsonmmz)]

I have just pushed a fix for the problem described in my previous message. I have not marked the bug as fixed, as it is not clear whether this was the actual issue.

[Reece Pollack (reece-pollack)]

It's quite probable that the scenario you describe is exactly what happened. I can't say absolutely, because I'm actually trying to lay out a board rather than deliberately testing KiCad, and I'm not entirely sure what I did. My bug reports generally represent my best recollection. Maybe I should set up a camera over my shoulder so I can watch the instant replay when something bad happens...

That said, I've confirmed that Pcbnew no longer crashes when removing all markers while a marker is selected. I think we can call this one fixed.

[Maciej Suminski (orsonmmz)]

Great, I am marking the bug as fixed. I understand that most people simply work using KiCad and I do not expect to always receive all details, no worries. Thank you for reporting back.