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  1. Qt
  2. QTBUG-118754

assertObjectType is triggered with a correct signal/slot connection on macOS

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Details

    • macOS
    • eea2929d8 (dev), c5f9f1b17 (6.6)

    Description

      The document viewer demo crashes, when the print-button is clicked.

      The print action's triggered signal is connected to AbstractViewer::print with
      connect(ui->actionPrint, &QAction::triggered, m_viewer, &AbstractViewer::print)
      m_viewer holds a pointer to AbstractViewer. The object is alive, its d'tor hasn't been reached.

      When the signal is fired, assertObjectType triggers and the application aborts.
      The print() codepath isn't reached.

      Changing the signal/slot connection to the old-style
      connect(ui->actionPrint, SIGNAL(triggered()), m_viewer, SLOT(print())) fixes the problem.

      Steps to reproduce:
      1. Compile the document viewer demo on macOS (WebEngine / PdfQuick needed)
      2. Open any PDF document
      3. Hit the print button

      Attachments

        Issue Links

          depends on

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-118795 FTBFS qtdoc documentviewer example: missing -fPIC -mno-direct-extern-access options

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-118671 [DocumentViewer] Clicking print button causes the app to crash

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          relates to

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTQAINFRA-5914 Qt Test Attack - Q4, 2023

          • Not Evaluated - Not yet evaluated/prioritized
          • Open
          replaces

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-118672 [DocumentViewer] Cannot open PDF files using the app.

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          For Gerrit Dashboard: QTBUG-118754
          # Subject Branch Project Status CR V
          515831,1 Document Viewer demo: Work around crashing PMF connection dev qt/qtdoc Status: ABANDONED 0 0
          516299,5 Documentviewer: Make AbstractViewer shared/static, depending on build dev qt/qtdoc Status: MERGED +2 0
          520861,2 Documentviewer: Make AbstractViewer shared/static, depending on build 6.6 qt/qtdoc Status: MERGED +2 0

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              semlanik Alexey Edelev
              axelspoerl Axel Spoerl
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              Dates

                Created:
                Updated:
                Resolved:

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