Projects/KDE on Windows/Tools

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Revision as of 13:37, 11 February 2019 by Rhabacker (talk | contribs) (Add section "cdb")

WinDbg

Download a binary with debug symbols

You must download a binary for the corresponding KDE applications with debug icon support from https://binary-factory.kde.org, e.g. https://binary-factory.kde.org/job/Umbrello_Nightly_win64/win64/.

  1. download umbrello-master-xxx-windows-msvc2017_64-cl.7z
  2. download umbrello-master-xxx-windows-msvc2017_64-cl-dbg.7z
  3. Unpack both archives to the same location.

Download a debugger

  1. Download SDK installer from https://developer.microsoft.com/de-de/windows/downloads/windows-10-sdk
  2. Start winsdksetzup, select "Download the Windows Software Development Kit ...." and press "Next".
  3. Uncheck all except "Debugging Tools for Windows x64".
  4. After the download is complete, enter the download directory and run "X64 Debuggers And Tools-x64_en-us.msi" from the Installers subdirectory.

Get the back trace

  1. Search for "WinDbg (X64)" on the start menu and run it.
  2. Select "File"->"Open Executable" from the application menu and select the main executable file you unpacked before, e.g. <unpack-root>\bin\umbrello5.exe.
  3. Select ""Debug"->"Go" to start the application. In case of a crash it will stop automatically.
  4. Select "View"->"Processes and Threads" from the application menu and select the main thread (id 000) if not already selected.
  5. Select "View"->"Callstack" to see the backtrace.
  6. Press "Source" in the call stack windows to see the source information.
  7. To save the call stack to the clipboard, press the icon on the left side of the Close button in the window title.
  8. Open a new bugs at https://bugs.kde.org and paste the clipboard content into that bug.


Note: Normally KF5 applications use DrKonqi to automatically generate a backtrace after a crash

cdb

cdb is the command line version of Projects/KDE_on_Windows/Tools#WinDbg WinDbg and could also be used to generate back traces. To use cdb follow these steps:

  1. Download a binary with debug symbols
  2. Download a debugger
  3. start cdb (normally installed into C:\Program Files (x86)\Windows Kits\10\Debuggers\x64) with: 
    cdb -g -lines <executable>
  4. After the application crashes, enter the following command to select the main thread, if not already selected
    ~0 s
  5. Then show the backtrace with
    k

You can save this backtrace to the clipboard and paste it into the related bug report.

DebugView

You can download DebugView from https://docs.microsoft.com/en-us/sysinternals/downloads/debugview.

To display debug messages, you must start this tool before the associated KDE application.

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