Eclipse 3.4.2 is used for compatibility testing with jdk7.
testInstall is passed with jdk7_b96 but failed with jdk7_b108 with the error below on solaris-sparc10:

testInstall Failure expected:<4> but was:<0>

junit.framework.AssertionFailedError: expected:<4> but was:<0>
at org.eclipse.equinox.p2.tests.planner.PatchTest5.testInstall(PatchTest5.java:53)
at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:354)
at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:206)
at org.eclipse.test.CoreTestApplication.runTests(CoreTestApplication.java:35)
at org.eclipse.test.CoreTestApplication.run(CoreTestApplication.java:31)
at org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodWithException(EclipseAppContainer.java:574)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:195)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
at org.eclipse.core.launcher.Main.main(Main.java:30)

Results location:
http://jsqalab.sfbay.sun.com/results/Evergreen/7/automation/7b108/compatibility-eclipse/3.4.2/solaris10-sparc/results/html/org.eclipse.equinox.p2.tests_solaris.gtk.sparc.html

http://jsqalab.sfbay.sun.com/results/Evergreen/7/automation/7b96/eclipse_compatibility/3.4.2/solaris10-sparc/results/html/org.eclipse.equinox.p2.tests_solaris.gtk.sparc.html

Assuming, it's a regression.

We do not have a source code, but there is an eclipse bug at https://bugs.eclipse.org/bugs/show_bug.cgi?id=243476 with the same issue for a reference.