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  1. Qt
  2. QTBUG-78240

Debug version of QCoreTextFontDatabase::fallbacksForFamily on Mac OS X 10.15(Beta)

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.12.7, 5.14.0 Alpha
    • 5.12.2
    • QPA
    • None
    • macOS
    • 7f0faddf9fe25adc0a3e0827e21c030d6a7a1035 (qt/qtbase/5.14) 1e6a680f8399ed3914a80da2f3a7cb3ef30e4a75 (qt/qtbase/5.12)

    Description

      #1. The root cause is missing `/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/Resources/DefaultFontFallbacks.plist` file in Mac OS X 10.15(Beta).

      #2: After loading this file `DefaultFontFallbacks.plist` (from `qt5/qtbase/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm`)
      into `fallbackDict`,  `fallbackDict` becomes `nil` on Mac OS X 10.15(Beta).

      #3: `Q_ASSERT` raises SIGABRT signal in Debug build. 

       

       

      I tested with official Qt binaries with maps.app example on Mac OS X 10.15(Beta), it crashes in the same place.

       

      Attachments

        1. CrashInvestigateMemo.png
          1.25 MB
          Kyaw Kyaw Win

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-80427 Assert with QWebEngineProfile due to missing plist

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-79120 'font-family' requests do not work for generic fonts

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          For Gerrit Dashboard: QTBUG-78240
          # Subject Branch Project Status CR V
          273821,9 CoreText: Modernize style hint fallback lookup 5.14 qt/qtbase Status: MERGED +2 0
          275169,1 CoreText: Modernize style hint fallback lookup 5.13 qt/qtbase Status: ABANDONED 0 0
          282006,2 CoreText: Modernize style hint fallback lookup 5.12 qt/qtbase Status: MERGED +2 0

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              vestbo Tor Arne Vestbø
              kyawkyawwin Kyaw Kyaw Win
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              Dates

                Created:
                Updated:
                Resolved:

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