No output in "Application Output" with debugger

[jeremiebourque]

Hi,

In QtCreator, I get no output in the "Application Output" tab when running the app with the debugger. I do however see it when running without the debugger.

My setup:

• Windows 11
• Qt Creator 15.0.1
• Qt 6.8.1 llvm mingw 64 bit

How to reproduce:

1. Use the "Document Viewer" example project (I get the problem in any projects)
2. Add a qDebug in the main.cpp file
3. Compile the app in debug mode
4. Run the app without the debugger to confirm that the qDebug does show up in the application output.
5. Run the app again, but this time with the debugger. The qDebug does not show in the application output.

How can I solve this?

Thank you.

[jeremiebourque]

Anyone has an idea?

[cristian-adam]

lldb on Windows has an issue and it doesn't work in the same way in Qt Creator as gdb or cdb.

There is a workaround though.

1. Make sure to have Run in terminal checked
2. Set the environment variable QT_WIN_DEBUG_CONSOLE=attach

See the screen cast below:

[cristian-adam]

I've opened up https://github.com/mstorsjo/llvm-mingw/issues/479 a bug upstream.