### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java,v
retrieving revision 1.434
diff -u -r1.434 ProblemReporter.java
--- compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	28 Feb 2011 18:27:48 -0000	1.434
+++ compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	31 Mar 2011 14:36:54 -0000
@@ -7328,7 +7328,12 @@
 			&& field.isStatic()
 			&& field.isFinal()
 			&& TypeBinding.LONG == field.type) {
-				return; // do not report unused serialVersionUID field
+		ReferenceBinding referenceBinding = field.declaringClass;
+		if (referenceBinding != null) {
+			if (referenceBinding.findSuperTypeOriginatingFrom(TypeIds.T_JavaIoSerializable, false /*Serializable is not a class*/) != null) {
+				return; // do not report unused serialVersionUID field for class that implements Serializable
+			}
+		}
 	}
 	if (CharOperation.equals(TypeConstants.SERIALPERSISTENTFIELDS, field.name)
 			&& field.isStatic()
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/SerialVersionUIDTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/SerialVersionUIDTests.java,v
retrieving revision 1.8
diff -u -r1.8 SerialVersionUIDTests.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/SerialVersionUIDTests.java	1 Oct 2009 19:26:00 -0000	1.8
+++ src/org/eclipse/jdt/core/tests/compiler/regression/SerialVersionUIDTests.java	31 Mar 2011 14:36:55 -0000
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006, 2009 IBM Corporation and others.
+ * Copyright (c) 2006, 2011 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -16,6 +16,8 @@
 
 import java.util.Map;
 
+import org.eclipse.jdt.core.JavaCore;
+import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
 import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
 
 import junit.framework.Test;
@@ -207,4 +209,49 @@
 			""
 		);
 }
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=341475
+public void test011() {
+	Map options = getCompilerOptions();
+	options.put(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER, JavaCore.ERROR);
+	this.runNegativeTest(
+		new String[] {
+			"X.java",
+			"public class X {\n" +
+			"	private static final long serialVersionUID = 1L;\n" +
+			"}"
+		},
+		"----------\n" + 
+		"1. ERROR in X.java (at line 2)\n" + 
+		"	private static final long serialVersionUID = 1L;\n" + 
+		"	                          ^^^^^^^^^^^^^^^^\n" + 
+		"The value of the field X.serialVersionUID is not used\n" + 
+		"----------\n",
+		null,
+		true,
+		options
+	);
+}
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=341475
+public void test012() {
+	if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
+	Map options = getCompilerOptions();
+	options.put(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER, JavaCore.ERROR);
+	this.runNegativeTest(
+		new String[] {
+			"X.java",
+			"public class X<T> {\n" +
+			"	private static final long serialVersionUID = 1L;\n" +
+			"}"
+		},
+		"----------\n" + 
+		"1. ERROR in X.java (at line 2)\n" + 
+		"	private static final long serialVersionUID = 1L;\n" + 
+		"	                          ^^^^^^^^^^^^^^^^\n" + 
+		"The value of the field X<T>.serialVersionUID is not used\n" + 
+		"----------\n",
+		null,
+		true,
+		options
+	);
+}
 }