A DESCRIPTION OF THE REQUEST :
To run SWT applications on OSX it is necessary to specify the -XstartOnFirstThread in java-vm-args (see https://www.eclipse.org/swt/macosx/).

According to the jnlp-syntax (http://docs.oracle.com/javase/7/docs/technotes/guides/javaws/developersguide/syntax.html) this argument is currently not marked as allowed and therefore the jvm is started without the argument and this results in a crash of the application with

!MESSAGE Application error
!STACK 1
org.eclipse.swt.SWTException: Invalid thread access
        at org.eclipse.swt.SWT.error(SWT.java:4361)
        at org.eclipse.swt.SWT.error(SWT.java:4276)
        at org.eclipse.swt.SWT.error(SWT.java:4247)
        at org.eclipse.swt.widgets.Display.error(Display.java:1070)
        at org.eclipse.swt.widgets.Display.createDisplay(Display.java:827)
        at org.eclipse.swt.widgets.Display.create(Display.java:810)
        at org.eclipse.swt.graphics.Device.<init>(Device.java:130)
        at org.eclipse.swt.widgets.Display.<init>(Display.java:701)
        at org.eclipse.swt.widgets.Display.<init>(Display.java:692)
        at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:716)
        at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:161)

So please mark -XstartOnFirstThread as allowed in java-vm-args (at least on OSX).

Thanks

JUSTIFICATION :
According to: https://www.eclipse.org/swt/macosx/

The special VM option -XstartOnFirstThread is also required for SWT applications to run properly on the Mac.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
VM-argument -XstartOnFirstThread is passed through to the vm.
ACTUAL -
-XstartOnFirstThread is fiotert because it is not marked as secure argument...

CUSTOMER SUBMITTED WORKAROUND :
Don't use a mac... :-(