Bugzilla – Full Text Bug Listing
| Summary: | core dump in OS._GTK_WIDGET_UNSET_FLAGS | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | [Eclipse Project] Platform | Reporter: | Paul Webster <pwebster> | ||||||
| Component: | SWT | Assignee: | Felipe Heidrich <eclipse.felipe> | ||||||
| Status: | RESOLVED FIXED | QA Contact: | |||||||
| Severity: | major | ||||||||
| Priority: | P3 | CC: | akurtakov, eclipse.felipe, emoffatt, remy.suen, Silenio_Quarti | ||||||
| Version: | 3.7 | ||||||||
| Target Milestone: | --- | ||||||||
| Hardware: | PC | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Attachments: |
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This is using: org.eclipse.swt_3.7.0.v3710.jar org.eclipse.swt.gtk.linux.x86_3.7.0.v3710.jar PW Here is the code:
boolean setFocus () {
if ((style & SWT.SEPARATOR) != 0) return false;
if (!OS.gtk_widget_get_child_visible (handle)) return false;
OS.GTK_WIDGET_SET_FLAGS (handle, OS.GTK_CAN_FOCUS);
OS.gtk_widget_grab_focus (handle);
boolean result = OS.gtk_widget_is_focus (handle);
if (!result) OS.GTK_WIDGET_UNSET_FLAGS (handle, OS.GTK_CAN_FOCUS);
return result;
}
I'm suppose application code is running when gtk_widget_grab_focus () is called (focus in/out event) and it is dispose the toolitem.
The fix should be simple, I'll try the reproduce the problem.
Works for me on Version: 4.1.0 Build id: I20101014-1937 running no Linux Fedora 11 This testcase simulates what I think the bug in E4 is, run the snippet and press tab
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
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.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class PR328173 {
public static void main (String[] args) {
Display display= new Display();
Shell shell= new Shell(display);
shell.setLayout(new GridLayout(1, false));
final Button button = new Button(shell, SWT.PUSH);
button.setText("button");
ToolBar bar = new ToolBar (shell,SWT.NONE);
final ToolItem item0 = new ToolItem(bar, SWT.PUSH);
item0.setText("item0");
ToolItem item1 = new ToolItem(bar, SWT.PUSH);
item1.setText("item1");
display.addFilter(SWT.FocusIn, new Listener() {
public void handleEvent(Event e) {
System.out.println("focus in " + e.widget);
}
});
display.addFilter(SWT.FocusOut, new Listener() {
public void handleEvent(Event e) {
System.out.println("focus out " + e.widget);
if (e.widget == button) item0.dispose();
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
Created attachment 181308 [details]
patch
I fixed the crash (code released in HEAD). That said, GTK doesn't like that we release the widget that is receiving focus during gtk_widget_grab_focus() and prints our several warnings. I can silence the warnings using Device.setWarnings(false) before calling gtk_widget_grab_focus(). Silenio, does that make sense to you ? Code has been released years ago. Resolving. |
Created attachment 181217 [details] java core Using java version "1.6.0" Java(TM) SE Runtime Environment (build pxi3260sr8-20100409_01(SR8)) I bring up our 4.1 SDK, and switch from the Breakpoints view to the Variables view and I get the attached core dump. I haven't yet found a workaround. PW