Attachment 278071 Details for Bug 182598 – Snippet to reproduce the problem with. Run and click on the only button, observe standard error output.

Snippet to reproduce the problem with. Run and click on the only button, observe standard error output.

Bug182598_GTK_crash_set_item_count_in_SetData_callback.java (text/x-java), 2.01 KB, created by Simeon Andreev

on 2019-03-29 10:16:13 EDT

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Filename:

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Creator: Simeon Andreev

Created: 2019-03-29 10:16:13 EDT

Size: 2.01 KB

patch

obsolete

>package swt.problems;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.events.SelectionEvent;
>import org.eclipse.swt.events.SelectionListener;
>import org.eclipse.swt.layout.FillLayout;
>import org.eclipse.swt.widgets.Button;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Event;
>import org.eclipse.swt.widgets.Listener;
>import org.eclipse.swt.widgets.Shell;
>import org.eclipse.swt.widgets.Tree;
>import org.eclipse.swt.widgets.TreeItem;
>
>public class Bug182598_GTK_crash_set_item_count_in_SetData_callback {
>
>	// If we want to have a Java dump on crash, we need to set a different number of tree items on SWT.SetData callback.
>	// I.e. =false -> reproduce https://bugs.eclipse.org/bugs/show_bug.cgi?id=182598
>	//      =true  -> reproduce https://bugs.eclipse.org/bugs/show_bug.cgi?id=545919
>	private static final boolean CRASH_WITH_DUMP = false;
>
>	public static void main(String[] args) {
>		
>		Display display = new Display();
>		Shell shell = new Shell(display);
>		shell.setSize(300, 200);
>		shell.setLayout(new FillLayout());
>
>		final Tree tree = new Tree(shell, SWT.VIRTUAL);
>		tree.addListener(SWT.SetData, new Listener() {
>			@Override
>			public void handleEvent(Event event) {
>				int itemCount = CRASH_WITH_DUMP ? 0 : 1;
>				tree.setItemCount(itemCount);
>			}
>		});
>
>		int N = 7;
>		for (int i = 0; i < N; ++i) {
>			TreeItem item = new TreeItem(tree, SWT.NONE);
>			int c = i + 1;
>			item.setText("item " + c);
>			if (i >= 5) {
>				item.setText("very long long long long long long item " + c);
>			}
>			item.setData("something " + c);
>			tree.setSelection(item);
>		}
>
>		Button button = new Button(shell, SWT.NONE);
>		button.setText("Tree.clearAll()");
>		button.addSelectionListener(new SelectionListener() {
>			@Override
>			public void widgetSelected(SelectionEvent e) {
>				tree.clearAll(true);
>			}
>
>			@Override
>			public void widgetDefaultSelected(SelectionEvent e) {
>			}
>		});
>
>		shell.open();
>
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch()) {
>				display.sleep();
>			}
>		}
>		display.dispose();
>	}
>}

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Attachments on bug 182598: 63931 | 278071 | 278072