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[tycho-user] LinkageError when running Tycho Surefire tests

Hi all,

We're running Eclipse RAP based application tests using Tycho which throws the following errors:

java.lang.LinkageError: loader constraint violation: loader (instance of org/eclipse/osgi/internal/loader/EquinoxClassLoader) previously initiated loading for a different type with name
 "org/eclipse/swt/widgets/Control"

Using -verbose:class reveals that org.eclipse.swt.widgets.Control class was loaded by 2 different classloaders, i.e:

[Loaded org.eclipse.swt.widgets.Control from file:/home/setya/.m2/repository/p2/osgi/bundle/org.eclipse.rap.rwt/3.0.2.20160201-1220/org.eclipse.rap.rwt-3.0.2.20160201-1220.jar]

and

[Loaded org.eclipse.swt.widgets.Control from file:/home/setya/.m2/repository/p2/osgi/bundle/org.eclipse.swt.gtk.linux.x86_64/3.104.2.v20160212-1350/org.eclipse.swt.gtk.linux.x86_64-3.10
4.2.v20160212-1350.jar]

Obviously we only want it loaded by RWT classloader, not SWT one.

The tests run fine when executed by RAP Tooling.

How to instruct Tycho to resolve this ?

Any help would be greatly appreciated.

Thanks & Regards,
Setya

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