I commented in the bug report, but thought I should re-post to the list.
We discovered this issue late in M7 and I thought we had fixed it in
https://bugs.eclipse.org/bugs/show_bug.cgi?id=378239

We had similar failures in our OSGi security tests
(https://bugs.eclipse.org/bugs/show_bug.cgi?id=377365#c19).  But now they
are passing in the latest test from the M7 build:

http://download.eclipse.org/eclipse/downloads/drops4/S-4.2M7-201205031800/testresults/html/org.eclipse.osgi.tests_linux.gtk.x86_6.0.html

Folks that are seeing this issue please make sure you are using the very
latest
org.eclipse.core.runtime.compatibility.registry_3.5.100.v20120502-1323 from
the eclipse platform M7 build.

Tom




                                                                       
  From:       Xiaoying Gu <[email protected]>                            
                                                                       
  To:         Cross project issues <[email protected]>,
                                                                       
  Date:       05/08/2012 02:20 AM                                      
                                                                       
  Subject:    Re: [cross-project-issues-dev] WARN: java.lang.SecurityException: 
class
              "org.eclipse.core.runtime.IExecutableExtension"'s signer 
information does not match signer information of
              other classes in the same package                        
                                                                       





BIRT also encountered this issue.
Please see BZ bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=378765


Thanks,
Xiaoying

From: [email protected] [
mailto:[email protected]] On Behalf Of Wenz,
Michael
Sent: Tuesday, May 08, 2012 2:27 PM
To: Cross project issues ([email protected])
Subject: [cross-project-issues-dev] WARN: java.lang.SecurityException:
class "org.eclipse.core.runtime.IExecutableExtension"'s signer information
does not match signer information of other classes in the same package

Since yesterday the Graphiti-nightly build runs into problems when running
its EasyMock-based tests. I see several exceptions like this in the test
execution and assume something might be wrong with the Eclipse core runtime
signing. Is anybody else seeing this or has a clue where to start
investigating?

Thanks,
Michael

WARN:  java.lang.SecurityException: class
"org.eclipse.core.runtime.IExecutableExtension"'s signer information does
not match signer information of other classes in the same package
                at java.lang.ClassLoader.checkCerts(ClassLoader.java:775)
                at java.lang.ClassLoader.preDefineClass
(ClassLoader.java:487)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:614)
                at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:124)
                at java.net.URLClassLoader.defineClass
(URLClassLoader.java:260)
                at java.net.URLClassLoader.access$100
(URLClassLoader.java:56)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
                at java.security.AccessController.doPrivileged(Native
Method)
                at java.net.URLClassLoader.findClass
(URLClassLoader.java:188)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
                at sun.misc.Launcher$AppClassLoader.loadClass
(Launcher.java:268)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
                at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:319)
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
                at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:124)
                at java.net.URLClassLoader.defineClass
(URLClassLoader.java:260)
                at java.net.URLClassLoader.access$100
(URLClassLoader.java:56)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
                at java.security.AccessController.doPrivileged(Native
Method)
                at java.net.URLClassLoader.findClass
(URLClassLoader.java:188)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
                at sun.misc.Launcher$AppClassLoader.loadClass
(Launcher.java:268)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
                at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:319)
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
                at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:124)
                at java.net.URLClassLoader.defineClass
(URLClassLoader.java:260)
                at java.net.URLClassLoader.access$100
(URLClassLoader.java:56)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
                at java.security.AccessController.doPrivileged(Native
Method)
                at java.net.URLClassLoader.findClass
(URLClassLoader.java:188)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
                at sun.misc.Launcher$AppClassLoader.loadClass
(Launcher.java:268)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
                at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:319)
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
                at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:124)
                at java.net.URLClassLoader.defineClass
(URLClassLoader.java:260)
                at java.net.URLClassLoader.access$100
(URLClassLoader.java:56)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
                at java.security.AccessController.doPrivileged(Native
Method)
                at java.net.URLClassLoader.findClass
(URLClassLoader.java:188)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
                at sun.misc.Launcher$AppClassLoader.loadClass
(Launcher.java:268)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
                at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:319)
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
                at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:124)
                at java.net.URLClassLoader.defineClass
(URLClassLoader.java:260)
                at java.net.URLClassLoader.access$100
(URLClassLoader.java:56)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
                at java.security.AccessController.doPrivileged(Native
Method)
                at java.net.URLClassLoader.findClass
(URLClassLoader.java:188)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
                at sun.misc.Launcher$AppClassLoader.loadClass
(Launcher.java:268)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
                at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:319)
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
                at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:124)
                at java.net.URLClassLoader.defineClass
(URLClassLoader.java:260)
                at java.net.URLClassLoader.access$100
(URLClassLoader.java:56)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
                at java.security.AccessController.doPrivileged(Native
Method)
                at java.net.URLClassLoader.findClass
(URLClassLoader.java:188)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
                at sun.misc.Launcher$AppClassLoader.loadClass
(Launcher.java:268)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
                at java.lang.ClassLoader.loadClassInternal
(ClassLoader.java:319)
                at java.lang.Class.getDeclaredMethods0(Native Method)
                at java.lang.Class.privateGetDeclaredMethods
(Class.java:2395)
                at java.lang.Class.privateGetPublicMethods(Class.java:2519)
                at java.lang.Class.getMethods(Class.java:1406)
                at sun.misc.ProxyGenerator.generateClassFile
(ProxyGenerator.java:409)
                at sun.misc.ProxyGenerator.generateProxyClass
(ProxyGenerator.java:306)
                at java.lang.reflect.Proxy.getProxyClass(Proxy.java:501)
                at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:581)
                at org.easymock.internal.JavaProxyFactory.createProxy
(JavaProxyFactory.java:13)
                at org.easymock.internal.MocksControl.createMock
(MocksControl.java:40)
                at org.easymock.EasyMock.createNiceMock(EasyMock.java:93)
                at
org.eclipse.graphiti.ui.tests.PackageTest.testUiInternalCommand
(PackageTest.java:426)
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
                at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
                at java.lang.reflect.Method.invoke(Method.java:585)
                at org.junit.runners.model.FrameworkMethod
$1.runReflectiveCall(FrameworkMethod.java:45)
                at org.junit.internal.runners.model.ReflectiveCallable.run
(ReflectiveCallable.java:15)
                at
org.junit.runners.model.FrameworkMethod.invokeExplosively
(FrameworkMethod.java:42)
                at
org.junit.internal.runners.statements.InvokeMethod.evaluate
(InvokeMethod.java:20)
                at org.junit.runners.ParentRunner.runLeaf
(ParentRunner.java:263)
                at org.junit.runners.BlockJUnit4ClassRunner.runChild
(BlockJUnit4ClassRunner.java:68)
                at org.junit.runners.BlockJUnit4ClassRunner.runChild
(BlockJUnit4ClassRunner.java:47)
                at org.junit.runners.ParentRunner$3.run
(ParentRunner.java:231)
                at org.junit.runners.ParentRunner$1.schedule
(ParentRunner.java:60)
                at org.junit.runners.ParentRunner.runChildren
(ParentRunner.java:229)
                at org.junit.runners.ParentRunner.access$000
(ParentRunner.java:50)
                at org.junit.runners.ParentRunner$2.evaluate
(ParentRunner.java:222)
                at
org.junit.internal.runners.statements.RunBefores.evaluate
(RunBefores.java:28)
                at org.junit.runners.ParentRunner.run
(ParentRunner.java:300)
                at org.junit.runners.Suite.runChild(Suite.java:128)
                at org.junit.runners.Suite.runChild(Suite.java:24)
                at org.junit.runners.ParentRunner$3.run
(ParentRunner.java:231)
                at org.junit.runners.ParentRunner$1.schedule
(ParentRunner.java:60)
                at org.junit.runners.ParentRunner.runChildren
(ParentRunner.java:229)
                at org.junit.runners.ParentRunner.access$000
(ParentRunner.java:50)
                at org.junit.runners.ParentRunner$2.evaluate
(ParentRunner.java:222)
                at org.junit.runners.ParentRunner.run
(ParentRunner.java:300)
                at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run
(JUnit4TestReference.java:50)
                at org.eclipse.jdt.internal.junit.runner.TestExecution.run
(TestExecution.java:38)
                at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
(RemoteTestRunner.java:467)
                at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
(RemoteTestRunner.java:683)
                at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run
(RemoteTestRunner.java:390)
                at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main
(RemoteTestRunner.java:197)
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