### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java,v
retrieving revision 1.230
diff -u -r1.230 CompilerOptions.java
--- compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java	25 Feb 2010 19:17:04 -0000	1.230
+++ compiler/org/eclipse/jdt/internal/compiler/impl/CompilerOptions.java	30 Aug 2010 10:11:15 -0000
@@ -342,6 +342,8 @@
 	public boolean generateClassFiles;
 	/** Indicate if method bodies should be ignored */
 	public boolean ignoreMethodBodies;
+	/** Indicate if generics (type parameters and such) should be retained */
+	public boolean shouldRetainGenerics; // https://bugs.eclipse.org/bugs/show_bug.cgi?id=323633
 
 	// keep in sync with warningTokenToIrritant and warningTokenFromIrritant
 	public final static String[] warningTokens = {
@@ -1048,6 +1050,9 @@
 		
 		// ignore method bodies
 		this.ignoreMethodBodies = false;
+		
+		// throw away generics
+		this.shouldRetainGenerics = false;
 	}
 
 	public void set(Map optionsMap) {
Index: compiler/org/eclipse/jdt/internal/compiler/lookup/BinaryTypeBinding.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/BinaryTypeBinding.java,v
retrieving revision 1.123
diff -u -r1.123 BinaryTypeBinding.java
--- compiler/org/eclipse/jdt/internal/compiler/lookup/BinaryTypeBinding.java	21 Sep 2009 23:37:04 -0000	1.123
+++ compiler/org/eclipse/jdt/internal/compiler/lookup/BinaryTypeBinding.java	30 Aug 2010 10:11:21 -0000
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2009 IBM Corporation and others.
+ * Copyright (c) 2000, 2010 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
@@ -149,7 +149,7 @@
 	this.fPackage = packageBinding;
 	this.fileName = binaryType.getFileName();
 
-	char[] typeSignature = environment.globalOptions.sourceLevel >= ClassFileConstants.JDK1_5 ? binaryType.getGenericSignature() : null;
+	char[] typeSignature = (environment.globalOptions.sourceLevel >= ClassFileConstants.JDK1_5 || environment.globalOptions.shouldRetainGenerics) ? binaryType.getGenericSignature() : null;
 	this.typeVariables = typeSignature != null && typeSignature.length > 0 && typeSignature[0] == '<'
 		? null // is initialized in cachePartsFrom (called from LookupEnvironment.createBinaryTypeFrom())... must set to null so isGenericType() answers true
 		: Binding.NO_TYPE_VARIABLES;
@@ -262,7 +262,7 @@
 
 		long sourceLevel = this.environment.globalOptions.sourceLevel;
 		char[] typeSignature = null;
-		if (sourceLevel >= ClassFileConstants.JDK1_5) {
+		if (sourceLevel >= ClassFileConstants.JDK1_5 || this.environment.globalOptions.shouldRetainGenerics) {
 			typeSignature = binaryType.getGenericSignature();
 			this.tagBits |= binaryType.getTagBits();
 		}
@@ -360,7 +360,7 @@
 		int size = iFields.length;
 		if (size > 0) {
 			this.fields = new FieldBinding[size];
-			boolean use15specifics = sourceLevel >= ClassFileConstants.JDK1_5;
+			boolean use15specifics = sourceLevel >= ClassFileConstants.JDK1_5 || this.environment.globalOptions.shouldRetainGenerics;
 			boolean hasRestrictedAccess = hasRestrictedAccess();
 			int firstAnnotatedFieldIndex = -1;
 			for (int i = 0; i < size; i++) {
@@ -411,7 +411,7 @@
 	AnnotationBinding[][] paramAnnotations = null;
 	TypeBinding returnType = null;
 
-	final boolean use15specifics = sourceLevel >= ClassFileConstants.JDK1_5;
+	final boolean use15specifics = sourceLevel >= ClassFileConstants.JDK1_5 || this.environment.globalOptions.shouldRetainGenerics;
 	char[] methodSignature = use15specifics ? method.getGenericSignature() : null;
 	if (methodSignature == null) { // no generics
 		char[] methodDescriptor = method.getMethodDescriptor();   // of the form (I[Ljava/jang/String;)V
Index: model/org/eclipse/jdt/internal/core/CompilationUnitProblemFinder.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/CompilationUnitProblemFinder.java,v
retrieving revision 1.68
diff -u -r1.68 CompilationUnitProblemFinder.java
--- model/org/eclipse/jdt/internal/core/CompilationUnitProblemFinder.java	19 Aug 2010 08:27:29 -0000	1.68
+++ model/org/eclipse/jdt/internal/core/CompilationUnitProblemFinder.java	30 Aug 2010 10:11:21 -0000
@@ -177,6 +177,7 @@
 			CompilerOptions compilerOptions = getCompilerOptions(project.getOptions(true), creatingAST, ((reconcileFlags & ICompilationUnit.ENABLE_STATEMENTS_RECOVERY) != 0));
 			boolean ignoreMethodBodies = (reconcileFlags & ICompilationUnit.IGNORE_METHOD_BODIES) != 0;
 			compilerOptions.ignoreMethodBodies = ignoreMethodBodies;
+			compilerOptions.shouldRetainGenerics = project.mayNeedGenerifiedAPIs(); // https://bugs.eclipse.org/bugs/show_bug.cgi?id=323633
 			problemFinder = new CompilationUnitProblemFinder(
 				environment,
 				getHandlingPolicy(),
Index: model/org/eclipse/jdt/internal/core/JavaProject.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaProject.java,v
retrieving revision 1.433
diff -u -r1.433 JavaProject.java
--- model/org/eclipse/jdt/internal/core/JavaProject.java	27 May 2010 10:10:34 -0000	1.433
+++ model/org/eclipse/jdt/internal/core/JavaProject.java	30 Aug 2010 10:11:31 -0000
@@ -66,6 +66,8 @@
 import org.eclipse.jdt.core.compiler.CategorizedProblem;
 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.core.eval.IEvaluationContext;
+import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
+import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
 import org.eclipse.jdt.internal.compiler.util.ObjectVector;
 import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
 import org.eclipse.jdt.internal.core.JavaModelManager.PerProjectInfo;
@@ -3167,4 +3169,24 @@
 		}
 		return JavaModelStatus.VERIFIED_OK;
 	}
+	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=323633
+	public boolean mayNeedGenerifiedAPIs() {
+		long sourceLevel = CompilerOptions.versionToJdkLevel(getOption(JavaCore.COMPILER_SOURCE, true));
+		if (sourceLevel >= ClassFileConstants.JDK1_5) {
+			return true;
+		}
+		try {
+			String [] prerequisites = getRequiredProjectNames();
+			for (int i = 0, length = prerequisites.length; i < length; i++) {
+				IJavaProject that = getJavaModel().getJavaProject(prerequisites[i]);
+				if (that instanceof JavaProject) {
+					if (((JavaProject) that).mayNeedGenerifiedAPIs())
+						return true;
+				}
+			}
+		} catch (JavaModelException e) {
+			// ignore ...
+		}
+		return false;
+	}
 }