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This happened when trying to import a project into a a brand new, unaltered Eclipse during testing. Build ID: I20111205-2330 The resulting import also happens to report build path problems due to missing JREs ... which is likely true, however, Manifest Builder should probably not be throwing NPEs to the log. Steps to reproduce: 1) Use File->Import->General->Existing Projects into Workspace to import the projects attached to this defect. 2) Note the error in the error log: !SESSION 2011-12-06 13:08:08.277 ----------------------------------------------- eclipse.buildId=I20111205-2330 java.fullversion=JRE 1.6.0 IBM J9 2.4 Windows 7 amd64-64 jvmwa6460sr8-20100401_55940 (JIT enabled, AOT enabled) J9VM - 20100401_055940 JIT - r9_20100401_15339 GC - 20100308_AA BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US Command-line arguments: -os win32 -ws win32 -arch x86_64 !ENTRY org.eclipse.core.resources 4 2 2011-12-06 13:15:50.408 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources". !STACK 0 java.lang.NullPointerException at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateInternalExtensionAttribute(ExtensionsErrorReporter.java:216) at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateElement(ExtensionsErrorReporter.java:189) at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateExtension(ExtensionsErrorReporter.java:110) at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateContent(ExtensionsErrorReporter.java:75) at org.eclipse.pde.internal.core.builders.ManifestConsistencyChecker.validateFiles(ManifestConsistencyChecker.java:298) at org.eclipse.pde.internal.core.builders.ManifestConsistencyChecker.validateProject(ManifestConsistencyChecker.java:223) at org.eclipse.pde.internal.core.builders.ManifestConsistencyChecker.build(ManifestConsistencyChecker.java:157) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54) !ENTRY org.eclipse.core.resources 4 75 2011-12-06 13:15:50.460 !MESSAGE Errors occurred during the build. !SUBENTRY 1 org.eclipse.pde.core 4 75 2011-12-06 13:15:50.460 !MESSAGE Errors running builder 'Plug-in Manifest Builder' on project 'c'. !STACK 0 java.lang.NullPointerException at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateInternalExtensionAttribute(ExtensionsErrorReporter.java:216) at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateElement(ExtensionsErrorReporter.java:189) at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateExtension(ExtensionsErrorReporter.java:110) at org.eclipse.pde.internal.core.builders.ExtensionsErrorReporter.validateContent(ExtensionsErrorReporter.java:75) at org.eclipse.pde.internal.core.builders.ManifestConsistencyChecker.validateFiles(ManifestConsistencyChecker.java:298) at org.eclipse.pde.internal.core.builders.ManifestConsistencyChecker.validateProject(ManifestConsistencyChecker.java:223) at org.eclipse.pde.internal.core.builders.ManifestConsistencyChecker.build(ManifestConsistencyChecker.java:157) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
These are the two warnings I get in the problems view. The warnings are likely valid Description Resource Path Location Type Build path specifies execution environment J2SE-1.5. There are no JREs installed in the workspace that are strictly compatible with this environment. activity Build path JRE System Library Problem Build path specifies execution environment J2SE-1.5. There are no JREs installed in the workspace that are strictly compatible with this environment. c Build path JRE System Library Problem
Created attachment 208012 [details] Example projects that cause an error Note these projects are just a random test case used to show an unrelated capabilities defect. Bug 361460
*** This bug has been marked as a duplicate of bug 314850 ***
