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  1. Qt
  2. QTBUG-43504

assertion in fontcache in qtwebkit

    XMLWordPrintable

Details

    • Bug
    • Resolution: Won't Do
    • P2: Important
    • None
    • 5.3.0, 5.3.1, 5.3.2, 5.4.0
    • WebKit
    • None
    • macOS

    Description

      ASSERTION FAILED: fontCache()->generation() == m_generation
      platform\graphics\FontGlyphs.cpp(109) : WebCore::FontGlyphs::realizeFontDataAt
      1 5F596327
      2 5EA14610
      3 5E7E8D65
      4 5E7E8DB8
      5 5E7E8D40
      6 5E7D8BDF
      7 5E97AF5C
      8 5E97B0B2
      9 5E6DDD79
      10 5E6EAA76
      11 5E6DEB26
      12 5E6E47D9
      13 5E6FAAA8
      14 5E6EA45F
      15 5E6DEB39
      16 5E6E47D9
      17 5E71568F
      18 5E712835
      19 5E6276B3
      20 5E62B82E
      21 5E159CA7
      22 67095EB6
      23 67095E74
      24 670A2B68
      25 6658F27C
      26 670A275C
      27 6654471E
      28 665428D1
      29 65744597
      30 65857C98
      31 665962BF
      (44c.910): Access violation - code c0000005 (first chance)
      First chance exceptions are reported before any exception handling.
      This exception may be expected and handled.

          • WARNING: Unable to verify checksum for C:\Users\Administrator\repo\dbuild\temp_folder\Sigil\Qt5WebKitd.dll
            eax=0000001f ebx=00000000 ecx=bed69407 edx=00000004 esi=059092a8 edi=002e7ad8
            eip=5f596327 esp=002e5ae4 ebp=002e5ae4 iopl=0 nv up ei pl zr na pe nc
            cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00210246
            Qt5WebKitd!WTFCrash+0x17:
            5f596327 c705efbeadbb00000000 mov dword ptr ds:[0BBADBEEFh],0 ds:0023:bbadbeef=????????

      The complete backtrace from a WinDBG session with source line numbers is attached

      Possibly related to:

      https://bugs.webkit.org/show_bug.cgi?id=89658

      Long existing bug in Qt Windows

      Happens when deleting multiple PNG image files referenced in ebook page in QWebView widget sometime after calling QWebSettings::clearMemoryCaches
      Simply trying to update main window status bar with a message that the files were deleted.

      I would be happy to run further tests or generate new traces for you if you think it would help. I have not built Qt from source, instead I am using the Qt Installer version for Win32 opengl debug libraries.

      Attachments

        1. just_the_backtrace.txt
          61 kB
          Kevin B. Hendricks
        2. Mac_Backtrace.txt
          19 kB
          Kevin B. Hendricks
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          People

            annulen Konstantin Tokarev
            kevinhendricks Kevin B. Hendricks
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            Dates

              Created:
              Updated:
              Resolved:

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