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  1. Qt
  2. QTBUG-80997

QColor compilation failure with gcc 4.9

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Done
    • Affects Version/s: 5.14.0
    • Fix Version/s: 5.14.1
    • Component/s: GUI: Painting
    • Labels:
      None
    • Environment:
      Linux with gcc < 5
    • Platform/s:
      Linux/Wayland, Linux/X11
    • Commits:
      c61cedcc5475a77fb94ed12788f61039835f8079

      Description

      Since commit de82d239f814cf2a717bea0defeee3732384e271 (Make QColor a literal type), QtGui compilation fails with the following message when using gcc 4.9:

      src/gui/painting/qcolor.h: In constructor 'constexpr QColor::QColor(int, int, int, int)':
      src/gui/painting/qcolor.h:79:18: sorry, unimplemented: use of the value of the object being constructed in a constant expression

      Since gcc 4.9 is still supported in Qt 5.14, please fix the issue. This is a known gcc issue that was fixed in gcc 5 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57694).

        Attachments

        For Gerrit Dashboard: QTBUG-80997
        # Subject Branch Project Status CR V
        285582,2 GCC: revoke constexpr before 5.0 5.14 qt/qtbase Status: MERGED +2 0
        286851,2 QColor: add casts to ushort 5.14 qt/qtbase Status: MERGED +2 0

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            People

            • Assignee:
              peppe Giuseppe D'Angelo
              Reporter:
              rawoul Arnaud Vrac
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              Watchers:
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              Dates

              • Created:
                Updated:
                Resolved:

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