Loading a Qt Creator minidump crash file on Windows

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For the rare cases when Qt Creator is crashing (QTCREATORBUG-29425 for example) and producing a MiniDump dmp file, you can get the stack trace of the crash by following these steps.

If Qt Creator is crashing but you don't have any dmp files, you need to enable the collecting of user-mode dumps in Windows.

Debug Symbols

Make sure that you have the debug symbols (*.pdb files) installed from the MaintainanceTool.

Qtcreator-debug-symbols.png


Source Mapping

The debugger will have to match the source file paths used on the build machine with the local Qt Creator source checkout.

Qtcreator-source-mapping.png

The Qt Creator build machine source path is C:\Users\qt\work\build\qt-creator.

Make sure that your Qt Creator source code checkout matches the Qt Creator installation.

LLVM MinGW's lldb.exe debugger

The cdb.exe default debugger for Visual C++ kits is not able to quickly load and display the dmp stack traces.

I have found that LLDB from LLVM MinGW can load the dmp stack traces.

Qtcreator-llvm-mingw-lldb.png

Use LLDB for the Visual C++ kit

Now that we have LLDB we need to modify the Visual C++ Kit used to load Qt Creator's source code.

Qtcreator-msvc-kit-using-lldb.png

Loading the MiniDump core file

Then under Debug > Start Debugging > Load core file ... you can load the dmp file e.g. qtcreator.exe.3492.dmp

Qtcreator-load-minidump-dialog.png

Examining the stack trace

Now you will be able to see the stack trace that cause the crash:

Qtcreator-loaded-minidump.png

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