### 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 1.108
diff -u -r1.108 ClasspathEntry.java
--- model/org/eclipse/jdt/internal/core/ClasspathEntry.java	28 Oct 2008 20:14:57 -0000	1.108
+++ model/org/eclipse/jdt/internal/core/ClasspathEntry.java	28 Oct 2008 21:22:48 -0000
@@ -888,10 +888,14 @@
 					boolean success = analyzer.analyzeManifestContents(reader);
 					List calledFileNames = analyzer.getCalledFileNames();
 					if (!success || analyzer.getClasspathSectionsCount() == 1 && calledFileNames == null) {
-						Util.log(IStatus.WARNING, "Invalid Class-Path header in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+						if (JavaModelManager.CP_RESOLVE_VERBOSE_FAILURE) {
+							Util.verbose("Invalid Class-Path header in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+						}
 						return;
 					} else if (analyzer.getClasspathSectionsCount() > 1) {
-						Util.log(IStatus.WARNING, "Multiple Class-Path headers in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+						if (JavaModelManager.CP_RESOLVE_VERBOSE_FAILURE) {
+							Util.verbose("Multiple Class-Path headers in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+						}
 						return;
 					}
 					if (calledFileNames != null) {
@@ -900,7 +904,9 @@
 						while (calledFilesIterator.hasNext()) {
 							String calledFileName = (String) calledFilesIterator.next();
 							if (!directoryPath.isValidPath(calledFileName)) {
-								Util.log(IStatus.WARNING, "Invalid Class-Path entry " + calledFileName + " in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$ //$NON-NLS-2$
+								if (JavaModelManager.CP_RESOLVE_VERBOSE_FAILURE) {
+									Util.verbose("Invalid Class-Path entry " + calledFileName + " in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$ //$NON-NLS-2$
+								}
 							} else {
 								IPath calledJar = directoryPath.append(new Path(calledFileName));
 								resolvedChainedLibraries(calledJar, visited, result);
@@ -911,8 +917,16 @@
 				}
 			} catch (CoreException e) {
 				// not a zip file
+				if (JavaModelManager.CP_RESOLVE_VERBOSE_FAILURE) {
+					Util.verbose("Could not read Class-Path header in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+					e.printStackTrace();
+				}
 			} catch (IOException e) {
-				Util.log(e, "Could not read Class-Path header in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+				// not a zip file
+				if (JavaModelManager.CP_RESOLVE_VERBOSE_FAILURE) {
+					Util.verbose("Could not read Class-Path header in manifest of jar file: " + jarPath.toOSString()); //$NON-NLS-1$
+					e.printStackTrace();
+				}
 			} finally {
 				manager.closeZipFile(zip);
 				if (reader != null) {
#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 1.192
diff -u -r1.192 ClasspathTests.java
--- src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	28 Oct 2008 20:13:20 -0000	1.192
+++ src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	28 Oct 2008 21:22:55 -0000
@@ -3394,7 +3394,33 @@
 		deleteProject("P");
 		deleteExternalResource("lib1.jar");
 	}
-}/*
+}
+/*
+ * Ensures that an invalid Class-Path: clause of a jar doesn't generate messages in the .log
+ * (regression test for https://bugs.eclipse.org/bugs/show_bug.cgi?id=252264 )
+ */
+public void testExtraLibraries16() throws Exception {
+	try {
+		startLogListening();
+		Util.createJar(
+			new String[0],
+			new String[] {
+				"META-INF/MANIFEST.MF",
+				"Manifest-Version: 1.0\r\n" +
+				"Class-Path: \n",
+			},
+			getExternalResourcePath("lib1.jar"),
+			JavaCore.VERSION_1_4);
+		IJavaProject p = createJavaProject("P", new String[0], new String[] {getExternalResourcePath("lib1.jar")}, "");
+		p.getResolvedClasspath(true);
+		assertLogEquals("");
+	} finally {
+		stopLogListening();
+		deleteProject("P");
+		deleteExternalResource("lib1.jar");
+	}
+}
+/*
  * Ensures that a marker is removed if adding an internal jar that is on the classpath in another project
  * (regression test for https://bugs.eclipse.org/bugs/show_bug.cgi?id=213723 )
  */