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Today I tried to launch an Ant build with an External Tools launch configuration and I got the following exception. Please note that when I tried to launch, the IDE was still building, so the user operation was enqueued, because Eclipse was building the workspace. Then, validation of XML files started and only after this operation had finished the launching was attempted. Other two operations I saw were in queue before this one were "Convert legacy project" (although I don't have any "legacy" project in my workspace) and "Linking selection with editor", but I don't know if they were completed before the launch started or not. org.xml.sax.SAXException: FWK005 parse may not be called while parsing. at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.eclipse.jdt.launching.JavaRuntime.newRuntimeClasspathEntry(JavaRuntime.java:708) at org.eclipse.jdt.launching.StandardClasspathProvider.recoverRuntimePath(StandardClasspathProvider.java:100) at org.eclipse.jdt.launching.StandardClasspathProvider.computeUnresolvedClasspath(StandardClasspathProvider.java:65) at org.eclipse.ant.internal.launching.launchConfigurations.AntClasspathProvider.computeUnresolvedClasspath(AntClasspathProvider.java:48) at org.eclipse.jdt.internal.launching.RuntimeClasspathProvider.computeUnresolvedClasspath(RuntimeClasspathProvider.java:53) at org.eclipse.jdt.launching.JavaRuntime.computeUnresolvedRuntimeClasspath(JavaRuntime.java:1215) at org.eclipse.ant.internal.launching.AntLaunchingUtil.getCustomClasspath(AntLaunchingUtil.java:240) at org.eclipse.ant.internal.launching.launchConfigurations.AntLaunchDelegate.launch(AntLaunchDelegate.java:214) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:854) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703) at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:928) at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1132) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Moving to Platform/Ant. Might belong to JDT/Debug
Looks like we are failing to parse the classpath from the launch configuration. Mauro, can you attach the launch configuration you were trying to launch?
(In reply to comment #2) > Mauro, can you attach the launch configuration you were trying to launch? Hi Micheal, I'm going to attach it. However, please note that the error does not happen always. It seems like it was something like a concurrency problem.
Created attachment 208274 [details] The launch configuration on which the error happened
(In reply to comment #4) > Created attachment 208274 [details] > The launch configuration on which the error happened Thanks for attaching the configuration. There is nothing wrong with the configuration, and the exception means that we are calling the parse method on the same Parser object once a parse has already begun. Looks like we could use some synchronization on the shared XML parser we have in LaunchingPlugin (see LaunchingPlugin#getParser())
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. If the bug is still relevant, please remove the stalebug whiteboard tag.
