Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-8092

Qt Designer Startup Crash (Access Violation)

    XMLWordPrintable

Details

    • Bug
    • Resolution: Out of scope
    • Not Evaluated
    • 4.7.0
    • 4.6.1
    • Tools: Designer
    • None
    • Microsoft Windows XP Version 5.1.2600
      Microsoft Visual Studio 2008 Express Version 9.0.30729.1 SP1
      Microsoft .NET Framework Version 3.5 SP1

    Description

      Qt Designer crashes on startup... Here is what I did:

      I changed mkspecs\win32-msvc2008\mkspecs as follow:

      QMAKE_CFLAGS_RELEASE = -O2 -MT
      QMAKE_CFLAGS_DEBUG = -Zi -MTd
      QMAKE_CFLAGS_LTCG =

      Then here is my configure line:

      configure -debug-and-release -no-style-windowsvista -stl -nomake demos -nomake examples

      Then I simply built using "nmake".

      trace.txt is the DrWatson release build trace.
      trace_debug.txt is the vc++ debug build trace.

      With a little bit of digging I found out that CrtIsValidHeapPointer() does an assertion error triggered by the destruction of the local QXmlStreamReader object from brushmanagerproxy.cpp inside void BrushManagerProxy::setBrushManager(QtBrushManager *manager) at line 269.

      When this object gets out of its local scope, the destructor of QXmlStreamReaderPrivate tries to delete the decoder and this is where the assertion is triggered:

      QXmlStreamReaderPrivate::~QXmlStreamReaderPrivate()
      {
      #ifndef QT_NO_TEXTCODEC
      delete decoder; // <---- THIS FAILS
      #endif
      ...
      }

      I have no real clue why this happens, possibly that the heap is overwritten somewhere before.

      Attachments

        1. trace.txt
          18 kB
        2. debug_trace.txt
          2 kB
        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

        Activity

          People

            kleint Friedemann Kleint
            philippe.vaucher Philippe Vaucher
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Gerrit Reviews

                There are no open Gerrit changes