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  1. Qt
  2. QTBUG-42913

Crash in QQuickWindowPrivate::polishItems

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P2: Important P2: Important
    • None
    • 5.4.0 Beta
    • Quick: Core Declarative QML
    • None
    • OSX 10.9

      I am unable to reduce the test case at the moment, but what seems to happen is that occasionally, when items are no longer in the view, QQuickWindowPrivate tries to access them and gets a bad pointer since those items have been deleted.

      The symptoms in the debugger are below:

      Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: 13 at address: 0x0000000000000000
0x0000000102f085c8 in QQuickWindowPrivate::polishItems (this=0x1100a9a80) at items/qquickwindow.cpp:262
(gdb) list
257
258             for (QSet<QQuickItem *>::iterator it = itms.begin(); it != itms.end(); ++it) {
259                 QQuickItem *item = *it;
260                 QQuickItemPrivate* d = QQuickItemPrivate::get(item);
261                 Q_ASSERT(d);
262                 d->polishScheduled = false;
263                 item->updatePolish();
264             }
265         }
266
(gdb) print d
$2 = (QQuickItemPrivate *) 0x50000000118f864e

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            sletta Gunnar Sletta
            sohail Sohail Somani
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              Created:
              Updated:
              Resolved:

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