### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/internal/core/ClasspathEntry.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/ClasspathEntry.java,v
retrieving revision 1.123
diff -u -r1.123 ClasspathEntry.java
--- model/org/eclipse/jdt/internal/core/ClasspathEntry.java	1 Feb 2010 11:13:25 -0000	1.123
+++ model/org/eclipse/jdt/internal/core/ClasspathEntry.java	22 Feb 2010 03:37:43 -0000
@@ -898,7 +898,7 @@
 		}
 	}
 
-	private static List getCalledFileNames(IPath jarPath) {
+	static List getCalledFileNames(IPath jarPath) {
 		Object target = JavaModel.getTarget(jarPath, true/*check existence, otherwise the manifest cannot be read*/);
 		if (!(target instanceof IFile || target instanceof File))
 			return null;
Index: model/org/eclipse/jdt/internal/core/JavaModelManager.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaModelManager.java,v
retrieving revision 1.443
diff -u -r1.443 JavaModelManager.java
--- model/org/eclipse/jdt/internal/core/JavaModelManager.java	15 Feb 2010 20:20:48 -0000	1.443
+++ model/org/eclipse/jdt/internal/core/JavaModelManager.java	22 Feb 2010 03:37:46 -0000
@@ -1525,7 +1525,9 @@
 	public void addNonChainingJar(IPath path) {
 		if (this.nonChainingJars == null)
 			return;
-		this.nonChainingJars.add(path);
+		synchronized (this.nonChainingJars) {
+			this.nonChainingJars.add(path);			
+		}
 	}
 
 	/**
@@ -2910,9 +2912,9 @@
 				IClasspathEntry entry = classpath[j];
 				IPath path;
 				if (entry.getEntryKind() == IClasspathEntry.CPE_LIBRARY 
-					&& !result.contains(path = entry.getPath())
-					&& ClasspathEntry.resolvedChainedLibraries(path).length == 0) {
-						result.add(path);
+						&& !result.contains(path = entry.getPath())
+						&& ClasspathEntry.getCalledFileNames(path) == null) {
+					result.add(path);
 				}
 			}
 		}