### 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 1.124
diff -u -r1.124 ClasspathEntry.java
--- model/org/eclipse/jdt/internal/core/ClasspathEntry.java	2 Mar 2010 06:46:00 -0000	1.124
+++ model/org/eclipse/jdt/internal/core/ClasspathEntry.java	7 Apr 2010 05:23:46 -0000
@@ -931,6 +931,13 @@
 					}
 				} else {
 					IPath calledJar = directoryPath.append(new Path(calledFileName));
+					// Ignore if segment count is Zero (https://bugs.eclipse.org/bugs/show_bug.cgi?id=308150)
+					if (calledJar.segmentCount() == 0) {
+						if (JavaModelManager.CP_RESOLVE_VERBOSE_FAILURE) {
+							Util.verbose("Invalid Class-Path entry " + calledFileName + " in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$ //$NON-NLS-2$
+						}
+						continue;
+					}
 					resolvedChainedLibraries(calledJar, visited, result);
 					result.add(calledJar);
 				}
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/model/ClasspathTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ClasspathTests.java,v
retrieving revision 1.210
diff -u -r1.210 ClasspathTests.java
--- src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	29 Mar 2010 05:33:57 -0000	1.210
+++ src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	7 Apr 2010 05:23:51 -0000
@@ -6641,5 +6641,50 @@
 			this.deleteProject("P");
 	}
 }
+/**
+ * @bug 308150: JAR with invalid Class-Path entry in MANIFEST.MF crashes the project
+ * Test that an invalid referenced library entry in the Class-Path of the MANIFEST doesn't
+ * create any exceptions and is NOT added to the resolved classpath.
+ *  
+ *  @see "https://bugs.eclipse.org/bugs/show_bug.cgi?id=308150"
+ * @throws Exception
+ */
+public void testBug308150() throws Exception {
+	try {
+
+		IJavaProject proj = this.createJavaProject("P", new String[] {}, "bin");
+		IClasspathEntry[] classpath = new IClasspathEntry[2];
+
+		// The Class-Path references an entry that points to the workspace root (hence invalid)
+		addLibrary(proj, "invalid.jar", null, new String[0], 
+				new String[] {
+					"META-INF/MANIFEST.MF",
+					"Manifest-Version: 1.0\n" +
+					"Class-Path: ../..\n",
+				},
+				JavaCore.VERSION_1_4);
+
+		addExternalLibrary(proj, getExternalResourcePath("invalid2.jar"), new String[0], 
+				new String[] {
+					"META-INF/MANIFEST.MF",
+					"Manifest-Version: 1.0\n" +
+					"Class-Path: ../..\n",
+				},
+				JavaCore.VERSION_1_4);
+			refreshExternalArchives(proj);
+
+		classpath[0] = JavaCore.newLibraryEntry(new Path("/P/invalid.jar"), null, null);
+		classpath[1] = JavaCore.newLibraryEntry(new Path(getExternalResourcePath("invalid2.jar")), null, null);
+		proj.setRawClasspath(classpath, null);
+		waitForAutoBuild();
+		IClasspathEntry[] resolvedClasspath = proj.getResolvedClasspath(true);
+
+		assertClasspathEquals(resolvedClasspath, 
+				"/P/invalid.jar[CPE_LIBRARY][K_BINARY][isExported:false]\n" + 
+				""+ getExternalPath() + "invalid2.jar[CPE_LIBRARY][K_BINARY][isExported:false]");
+	} finally {
+		this.deleteProject("P");
+	}
+}
 
 }