[Webkit-unassigned] [Bug 18205] DOMNode objects are garbage collected although there are strong references

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=18205





------- Comment #17 from illenberger at mac.com  2008-04-05 10:25 PDT -------
These crashes are not a theoretical issue for the development of our WebKit
application. We are experiencing lots of undo/redo related crashes with DOM
wrapper objects, like the one in the first test case.

The only workaround I could think of so far to rescue our app  is to subclass
the undo manager to enable it to perform a complete collection before its
actions:

@implementation MyUndoManager

- (void)superUndo
{
        [super undo];
}

- (void)undo
{
        [[NSGarbageCollector defaultCollector] collectExhaustively];
        [self performSelector:@selector(superUndo) withObject:nil
afterDelay:0.0];
}

- (void)superRedo
{
        [super redo];
}

- (void)redo
{
        [[NSGarbageCollector defaultCollector] collectExhaustively];
        [self performSelector:@selector(superRedo) withObject:nil
afterDelay:0.0];
}

@end


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