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Linuxfb plugin platform cannot use gdb to debug QT programs normally



  • Hardware resources: PC / embedded development version

    Operating system: linux

    problem:
    On the Linux operating system, debug the QT program. QT platform plugin I use linuxfb. I use gdb to debug QT programs with UI. (QT console program does not have the following problems)

    The debugging steps are as follows:

    Step 1: Start the program through gdb

    gdb test

    Step 2: After entering gdb, set the program startup parameters

    set args -platform linuxfb

    Step 3: Start debugging

    (gdb) r

    Step 4: Press ctrl + c to interrupt gdb debugging

    At this time, gdb prompts the following information:

    [Inferior 1 (process 28879) exited with code 01]

    Then enter:
    (gdb) bt

    gdb prompt: No stack.

    Then enter continue

    gdb prompt: The program is not being run.

    This is a very strange question. If I set the startup parameters to be set args -platform xcb or set args -platform eglfs. Then the above problems will not occur during the gdb debugging process.
    Does anyone know why this is happening?


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