Attachment 181439 Details for Bug 185682 – patch v8

[patch] patch v8

bug_185682_v8.patch (text/plain), 93.13 KB, created by Stephan Herrmann

on 2010-10-21 15:25:17 EDT

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Filename:

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Creator: Stephan Herrmann

Created: 2010-10-21 15:25:17 EDT

Size: 93.13 KB

patch

obsolete

>### Eclipse Workspace Patch 1.0
>#P org.eclipse.jdt.core
>Index: compiler/org/eclipse/jdt/core/compiler/IProblem.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/core/compiler/IProblem.java,v
>retrieving revision 1.222
>diff -u -r1.222 IProblem.java
>--- compiler/org/eclipse/jdt/core/compiler/IProblem.java	7 Sep 2010 13:39:18 -0000	1.222
>+++ compiler/org/eclipse/jdt/core/compiler/IProblem.java	21 Oct 2010 18:59:59 -0000
>@@ -117,6 +117,7 @@
>  *									MissingSynchronizedModifierInInheritedMethod
>  *		Stephan Herrmann  - added the following constants
>  *									UnusedObjectAllocation									
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.compiler;
> 
>@@ -359,6 +360,8 @@
> 	int DuplicateBlankFinalFieldInitialization = FieldRelated + 82;
> 	/** @since 3.6 */
> 	int UnresolvedVariable = FieldRelated + 83;
>+	/** @since 3.7 */
>+	int UnusedScopedField = Internal + FieldRelated + 84;
> 
> 	// variable hiding
> 	/** @since 3.0 */
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/ASTNode.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/ASTNode.java,v
>retrieving revision 1.103
>diff -u -r1.103 ASTNode.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/ASTNode.java	10 May 2010 20:47:58 -0000	1.103
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/ASTNode.java	21 Oct 2010 19:00:01 -0000
>@@ -9,6 +9,7 @@
>  *     IBM Corporation - initial API and implementation
>  *     Matt McCutchen - partial fix for https://bugs.eclipse.org/bugs/show_bug.cgi?id=122995
>  *     Karen Moore - fix for https://bugs.eclipse.org/bugs/show_bug.cgi?id=207411
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.ast;
> 
>@@ -357,11 +358,17 @@
> 		return this;
> 	}
> 
>-	public final boolean isFieldUseDeprecated(FieldBinding field, Scope scope, boolean isStrictlyAssigned) {
>-		// ignore references insing Javadoc comments
>-		if ((this.bits & ASTNode.InsideJavadoc) == 0 && !isStrictlyAssigned && field.isOrEnclosedByPrivateType() && !scope.isDefinedInField(field)) {
>-			// ignore cases where field is used from inside itself
>-			field.original().modifiers |= ExtraCompilerModifiers.AccLocallyUsed;
>+	public final boolean isFieldUseDeprecated(FieldBinding field, Scope scope, int filteredBits) {
>+		if ((this.bits & ASTNode.InsideJavadoc) == 0			// ignore references inside Javadoc comments 
>+				&& (filteredBits & IsStrictlyAssigned) == 0 	// ignore write access
>+				&& field.isOrEnclosedByPrivateType() 
>+				&& !scope.isDefinedInField(field)) 				// ignore cases where field is used from inside itself 
>+		{		
>+			if (((filteredBits & IsCompoundAssigned) != 0))
>+				// used, but usage may not be relevant
>+				field.original().compoundUseFlag++;
>+			else
>+				field.original().modifiers |= ExtraCompilerModifiers.AccLocallyUsed;
> 		}
> 
> 		if ((field.modifiers & ExtraCompilerModifiers.AccRestrictedAccess) != 0) {
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java,v
>retrieving revision 1.129
>diff -u -r1.129 FieldReference.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java	21 Feb 2010 03:31:46 -0000	1.129
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/FieldReference.java	21 Oct 2010 19:00:02 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.ast;
> 
>@@ -290,6 +291,8 @@
> 
> public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
> 	boolean isStatic;
>+	// check if compound assignment is the only usage of a private field
>+	reportOnlyUselesslyReadPrivateField(currentScope, this.binding, valueRequired);
> 	FieldBinding codegenBinding = this.binding.original();
> 	this.receiver.generateCode(currentScope, codeStream, !(isStatic = codegenBinding.isStatic()));
> 	if (isStatic) {
>@@ -337,6 +340,8 @@
> 
> public void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired) {
> 	boolean isStatic;
>+	// check if postIncrement is the only usage of a private field
>+	reportOnlyUselesslyReadPrivateField(currentScope, this.binding, valueRequired);
> 	FieldBinding codegenBinding = this.binding.original();
> 	this.receiver.generateCode(currentScope, codeStream, !(isStatic = codegenBinding.isStatic()));
> 	if (isStatic) {
>@@ -577,7 +582,7 @@
> 	if (this.actualReceiverType != oldReceiverType && this.receiver.postConversionType(scope) != this.actualReceiverType) { // record need for explicit cast at codegen since receiver could not handle it
> 		this.bits |= NeedReceiverGenericCast;
> 	}
>-	if (isFieldUseDeprecated(fieldBinding, scope, (this.bits & ASTNode.IsStrictlyAssigned) !=0)) {
>+	if (isFieldUseDeprecated(fieldBinding, scope, this.bits)) {
> 		scope.problemReporter().deprecatedField(fieldBinding, this);
> 	}
> 	boolean isImplicitThisRcv = this.receiver.isImplicitThis();
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/JavadocFieldReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/JavadocFieldReference.java,v
>retrieving revision 1.31
>diff -u -r1.31 JavadocFieldReference.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/JavadocFieldReference.java	24 Nov 2008 10:21:23 -0000	1.31
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/JavadocFieldReference.java	21 Oct 2010 19:00:02 -0000
>@@ -1,5 +1,5 @@
> /*******************************************************************************
>- * Copyright (c) 2000, 2008 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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.ast;
> 
>@@ -97,7 +98,7 @@
> 		}
> 		this.binding = (FieldBinding) fieldBinding;
> 
>-		if (isFieldUseDeprecated(this.binding, scope, (this.bits & IsStrictlyAssigned) != 0)) {
>+		if (isFieldUseDeprecated(this.binding, scope, this.bits)) {
> 			scope.problemReporter().javadocDeprecatedField(this.binding, this, scope.getDeclarationModifiers());
> 		}
> 		return this.resolvedType = this.binding.type;
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/QualifiedNameReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/QualifiedNameReference.java,v
>retrieving revision 1.147
>diff -u -r1.147 QualifiedNameReference.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/QualifiedNameReference.java	21 Sep 2010 14:02:57 -0000	1.147
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/QualifiedNameReference.java	21 Oct 2010 19:00:05 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.ast;
> 
>@@ -380,6 +381,8 @@
> 
> public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
> 	FieldBinding lastFieldBinding = generateReadSequence(currentScope, codeStream);
>+	// check if compound assignment is the only usage of a private field
>+	reportOnlyUselesslyReadPrivateField(currentScope, lastFieldBinding, valueRequired);
> 	boolean isFirst = lastFieldBinding == this.binding
> 		&& (this.indexOfFirstFieldBinding == 1 || lastFieldBinding.declaringClass == currentScope.enclosingReceiverType())
> 		&& this.otherBindings == null; // could be dup: next.next.next
>@@ -431,6 +434,8 @@
> 
> public void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired) {
> 	FieldBinding lastFieldBinding = generateReadSequence(currentScope, codeStream);
>+	// check if this post increment is the only usage of a private field
>+	reportOnlyUselesslyReadPrivateField(currentScope, lastFieldBinding, valueRequired);
> 	boolean isFirst = lastFieldBinding == this.binding
> 		&& (this.indexOfFirstFieldBinding == 1 || lastFieldBinding.declaringClass == currentScope.enclosingReceiverType())
> 		&& this.otherBindings == null; // could be dup: next.next.next
>@@ -719,7 +724,7 @@
> 				}				
> 		    }
> 			// only last field is actually a write access if any
>-			if (isFieldUseDeprecated(field, scope, (this.bits & ASTNode.IsStrictlyAssigned) !=0 && index+1 == length)) {
>+			if (isFieldUseDeprecated(field, scope, index+1 == length ? this.bits : 0)) {
> 				scope.problemReporter().deprecatedField(field, this);
> 			}
> 			// constant propagation can only be performed as long as the previous one is a constant too.
>@@ -954,7 +959,7 @@
> 							&& (!fieldBinding.isStatic() || methodScope.isStatic)) {
> 						scope.problemReporter().forwardReference(this, this.indexOfFirstFieldBinding-1, fieldBinding);
> 					}
>-					if (isFieldUseDeprecated(fieldBinding, scope, (this.bits & ASTNode.IsStrictlyAssigned) != 0 && this.indexOfFirstFieldBinding == this.tokens.length)) {
>+					if (isFieldUseDeprecated(fieldBinding, scope, this.indexOfFirstFieldBinding == this.tokens.length ? this.bits : 0)) {
> 						scope.problemReporter().deprecatedField(fieldBinding, this);	
> 					}
> 					if (fieldBinding.isStatic()) {
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/Reference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/Reference.java,v
>retrieving revision 1.32
>diff -u -r1.32 Reference.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/Reference.java	7 Mar 2009 01:08:07 -0000	1.32
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/Reference.java	21 Oct 2010 19:00:05 -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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.ast;
> 
>@@ -15,8 +16,11 @@
> import org.eclipse.jdt.internal.compiler.flow.FlowContext;
> import org.eclipse.jdt.internal.compiler.flow.FlowInfo;
> import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
>+import org.eclipse.jdt.internal.compiler.lookup.ExtraCompilerModifiers;
> import org.eclipse.jdt.internal.compiler.lookup.FieldBinding;
>+import org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding;
> import org.eclipse.jdt.internal.compiler.lookup.MethodBinding;
>+import org.eclipse.jdt.internal.compiler.lookup.MethodScope;
> import org.eclipse.jdt.internal.compiler.lookup.Scope;
> import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
> import org.eclipse.jdt.internal.compiler.lookup.TypeIds;
>@@ -87,4 +91,72 @@
> public abstract void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired);
> 
> public abstract void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired);
>+
>+/* report if a private field is only read from a 'special operator',
>+ * i.e., in a postIncrement expression or a compound assignment,
>+ * where the information is never flowing out off the field. */
>+void reportOnlyUselesslyReadPrivateField(BlockScope currentScope, FieldBinding fieldBinding, boolean valueRequired) {
>+	if (valueRequired) {
>+		// access is relevant, turn compound use into real use:
>+		fieldBinding.compoundUseFlag = 0;
>+		fieldBinding.modifiers |= ExtraCompilerModifiers.AccLocallyUsed;
>+	} else {
>+		if (fieldBinding.isUsedOnlyInCompound()) {
>+			fieldBinding.compoundUseFlag--; // consume one
>+			if (fieldBinding.compoundUseFlag == 0					// report only the last usage
>+					&& fieldBinding.isOrEnclosedByPrivateType() 
>+					&& (this.implicitConversion & TypeIds.UNBOXING) == 0) // don't report if unboxing is involved (might cause NPE)
>+			{
>+				// compoundAssignment/postIncrement is the only usage of this field
>+				currentScope.problemReporter().unusedPrivateField(fieldBinding.sourceField());
>+				fieldBinding.modifiers |= ExtraCompilerModifiers.AccLocallyUsed; // don't report again
>+			}
>+		}
>+	}
>+}
>+/* report a local/arg that is only read from a 'special operator',
>+ * i.e., in a postIncrement expression or a compound assignment,
>+ * where the information is never flowing out off the local/arg. */
>+static void reportOnlyUselesslyReadLocal(BlockScope currentScope, LocalVariableBinding localBinding, boolean valueRequired) {
>+	if (localBinding.declaration == null)
>+		return;  // secret local
>+	if ((localBinding.declaration.bits & ASTNode.IsLocalDeclarationReachable) == 0)
>+		return;  // declaration is unreachable
>+	if (localBinding.useFlag >= LocalVariableBinding.USED)
>+		return;  // we're only interested in cases with only compound access (negative count)
>+
>+	if (valueRequired) {
>+		// access is relevant
>+		localBinding.useFlag = LocalVariableBinding.USED;
>+		return;
>+	} else {
>+		localBinding.useFlag++;
>+		if (localBinding.useFlag != 0)
>+			return; // still waiting to see more usages of this kind
>+	}
>+	// at this point we know we have something to report
>+	if (localBinding.declaration instanceof Argument) {
>+		// check compiler options to report against unused arguments
>+		MethodScope methodScope = currentScope.methodScope();
>+		if (methodScope != null) {
>+			MethodBinding method = ((AbstractMethodDeclaration)methodScope.referenceContext()).binding;
>+			
>+			boolean shouldReport = !method.isMain();
>+			if (method.isImplementing()) {
>+				shouldReport &= currentScope.compilerOptions().reportUnusedParameterWhenImplementingAbstract;
>+			} else if (method.isOverriding()) {
>+				shouldReport &= currentScope.compilerOptions().reportUnusedParameterWhenOverridingConcrete;
>+			}
>+			
>+			if (shouldReport) {
>+				// report the case of an argument that is unread except through a special operator
>+				currentScope.problemReporter().unusedArgument(localBinding.declaration);
>+			}
>+		}
>+	} else {
>+		// report the case of a local variable that is unread except for a special operator
>+		currentScope.problemReporter().unusedLocalVariable(localBinding.declaration);
>+	}
>+	localBinding.useFlag = LocalVariableBinding.USED; // don't report again
>+}
> }
>Index: compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java,v
>retrieving revision 1.124
>diff -u -r1.124 SingleNameReference.java
>--- compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java	23 Sep 2010 12:03:42 -0000	1.124
>+++ compiler/org/eclipse/jdt/internal/compiler/ast/SingleNameReference.java	21 Oct 2010 19:00:06 -0000
>@@ -7,7 +7,8 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>- *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 292478 - Report potentially null across variable assignment
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 292478 - Report potentially null across variable assignment,
>+ *     											    Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.ast;
> 
>@@ -78,10 +79,16 @@
> 					currentScope.problemReporter().uninitializedLocalVariable(localBinding, this);
> 					// we could improve error msg here telling "cannot use compound assignment on final local variable"
> 				}
>-				if (isReachable) {
>-					localBinding.useFlag = LocalVariableBinding.USED;
>-				} else if (localBinding.useFlag == LocalVariableBinding.UNUSED) {
>-					localBinding.useFlag = LocalVariableBinding.FAKE_USED;
>+				if (localBinding.useFlag != LocalVariableBinding.USED) {
>+					// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+					// access from compound assignment does not prevent "unused" warning, unless unboxing is involved:
>+					if (isReachable && (this.implicitConversion & TypeIds.UNBOXING) != 0) {
>+						localBinding.useFlag = LocalVariableBinding.USED;
>+					} else {
>+						// use values < 0 to count the number of compound uses:
>+						if (localBinding.useFlag <= LocalVariableBinding.UNUSED)
>+							localBinding.useFlag--;
>+					}
> 				}
> 		}
> 	}
>@@ -204,7 +211,7 @@
> 		}
> 	}
> 
>-	if (isFieldUseDeprecated(fieldBinding, scope, (this.bits & ASTNode.IsStrictlyAssigned) !=0))
>+	if (isFieldUseDeprecated(fieldBinding, scope, this.bits))
> 		scope.problemReporter().deprecatedField(fieldBinding, this);
> 
> 	if ((this.bits & ASTNode.IsStrictlyAssigned) == 0
>@@ -462,6 +469,17 @@
>  * are optimized in one access: e.g "a = a + 1" optimized into "a++".
>  */
> public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
>+	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+	switch (this.bits & ASTNode.RestrictiveFlagMASK) {
>+		case Binding.LOCAL:
>+			LocalVariableBinding localBinding = (LocalVariableBinding) this.binding;
>+			// check if compound assignment is the only usage of this local
>+			Reference.reportOnlyUselesslyReadLocal(currentScope, localBinding, valueRequired);
>+			break;
>+		case Binding.FIELD:
>+			// check if compound assignment is the only usage of a private field
>+			reportOnlyUselesslyReadPrivateField(currentScope, (FieldBinding)this.binding, valueRequired);
>+	}
> 	this.generateCompoundAssignment(
> 		currentScope,
> 		codeStream,
>@@ -599,7 +617,11 @@
> public void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired) {
> 	switch (this.bits & ASTNode.RestrictiveFlagMASK) {
> 		case Binding.FIELD : // assigning to a field
>-			FieldBinding codegenField = (((FieldBinding)this.binding).original());
>+			FieldBinding fieldBinding = (FieldBinding)this.binding;
>+			// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+			// check if postIncrement is the only usage of a private field
>+			reportOnlyUselesslyReadPrivateField(currentScope, fieldBinding, valueRequired);
>+			FieldBinding codegenField = fieldBinding.original();
> 			if (codegenField.isStatic()) {
> 				if ((this.syntheticAccessors == null) || (this.syntheticAccessors[SingleNameReference.READ] == null)) {
> 					TypeBinding constantPoolDeclaringClass = CodeStream.getConstantPoolDeclaringClass(currentScope, codegenField, this.actualReceiverType, true /* implicit this */);
>@@ -662,6 +684,10 @@
> 			return;
> 		case Binding.LOCAL : // assigning to a local variable
> 			LocalVariableBinding localBinding = (LocalVariableBinding) this.binding;
>+			// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+			// check if postIncrement is the only usage of this local
>+			Reference.reportOnlyUselesslyReadLocal(currentScope, localBinding, valueRequired);
>+
> 			// using incr bytecode if possible
> 			if (localBinding.type == TypeBinding.INT) {
> 				if (valueRequired) {
>Index: compiler/org/eclipse/jdt/internal/compiler/lookup/FieldBinding.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/FieldBinding.java,v
>retrieving revision 1.59
>diff -u -r1.59 FieldBinding.java
>--- compiler/org/eclipse/jdt/internal/compiler/lookup/FieldBinding.java	11 Nov 2009 05:40:46 -0000	1.59
>+++ compiler/org/eclipse/jdt/internal/compiler/lookup/FieldBinding.java	21 Oct 2010 19:00:08 -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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.lookup;
> 
>@@ -19,6 +20,8 @@
> 
> public class FieldBinding extends VariableBinding {
> 	public ReferenceBinding declaringClass;
>+	public int compoundUseFlag = 0; // number or accesses via postIncrement or compoundAssignment
>+	
> protected FieldBinding() {
> 	super(null, null, 0, null);
> 	// for creating problem field
>@@ -332,7 +335,13 @@
> */
> 
> public final boolean isUsed() {
>-	return (this.modifiers & ExtraCompilerModifiers.AccLocallyUsed) != 0;
>+	return (this.modifiers & ExtraCompilerModifiers.AccLocallyUsed) != 0 || this.compoundUseFlag > 0;
>+}
>+/* Answer true if the only use of this field is in compound assignment or post increment
>+ */
>+
>+public final boolean isUsedOnlyInCompound() {
>+	return (this.modifiers & ExtraCompilerModifiers.AccLocallyUsed) == 0 && this.compoundUseFlag > 0;
> }
> /* Answer true if the receiver has protected visibility
> */
>Index: compiler/org/eclipse/jdt/internal/compiler/lookup/LocalVariableBinding.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/lookup/LocalVariableBinding.java,v
>retrieving revision 1.47
>diff -u -r1.47 LocalVariableBinding.java
>--- compiler/org/eclipse/jdt/internal/compiler/lookup/LocalVariableBinding.java	18 Mar 2009 00:18:35 -0000	1.47
>+++ compiler/org/eclipse/jdt/internal/compiler/lookup/LocalVariableBinding.java	21 Oct 2010 19:00:08 -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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.lookup;
> 
>@@ -26,7 +27,7 @@
> 	public static final int UNUSED = 0;
> 	public static final int USED = 1;
> 	public static final int FAKE_USED = 2;
>-	public int useFlag; // for flow analysis (default is UNUSED)
>+	public int useFlag; // for flow analysis (default is UNUSED), values < 0 indicate the number of compound uses (postIncrement or compoundAssignment)
> 
> 	public BlockScope declaringScope; // back-pointer to its declaring scope
> 	public LocalDeclaration declaration; // for source-positions
>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 1.422
>diff -u -r1.422 ProblemReporter.java
>--- compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	21 Sep 2010 14:02:58 -0000	1.422
>+++ compiler/org/eclipse/jdt/internal/compiler/problem/ProblemReporter.java	21 Oct 2010 19:00:20 -0000
>@@ -9,6 +9,7 @@
>  *     IBM Corporation - initial API and implementation
>  *     Benjamin Muskalla - Contribution for bug 239066
>  *     Stephan Herrmann  - Contribution for bug 236385
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.compiler.problem;
> 
>@@ -194,6 +195,7 @@
> 		case IProblem.UnusedPrivateConstructor:
> 		case IProblem.UnusedPrivateMethod:
> 		case IProblem.UnusedPrivateField:
>+		case IProblem.UnusedScopedField:
> 		case IProblem.UnusedPrivateType:
> 			return CompilerOptions.UnusedPrivateMember;
> 
>@@ -7246,7 +7248,10 @@
> }
> public void unusedPrivateField(FieldDeclaration fieldDecl) {
> 
>-	int severity = computeSeverity(IProblem.UnusedPrivateField);
>+	int problemId = (fieldDecl.modifiers & ClassFileConstants.AccPrivate) != 0 
>+						? IProblem.UnusedPrivateField
>+						: IProblem.UnusedScopedField;
>+	int severity = computeSeverity(problemId);
> 	if (severity == ProblemSeverities.Ignore) return;
> 
> 	FieldBinding field = fieldDecl.binding;
>@@ -7265,7 +7270,7 @@
> 				return; // do not report unused serialPersistentFields field
> 	}
> 	this.handle(
>-			IProblem.UnusedPrivateField,
>+			problemId,
> 		new String[] {
> 			new String(field.declaringClass.readableName()),
> 			new String(field.name),
>Index: compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties,v
>retrieving revision 1.258
>diff -u -r1.258 messages.properties
>--- compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties	7 Sep 2010 13:39:18 -0000	1.258
>+++ compiler/org/eclipse/jdt/internal/compiler/problem/messages.properties	21 Oct 2010 19:00:21 -0000
>@@ -8,6 +8,7 @@
> # Contributors:
> #     IBM Corporation - initial API and implementation
> #		Benjamin Muskalla - Contribution for bug 239066
>+#		Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
> ###############################################################################
> 0 = {0}
> 1 = super cannot be used in java.lang.Object
>@@ -49,8 +50,8 @@
> 58 = The final local variable {0} cannot be assigned. It must be blank and not using a compound assignment
> 59 = The parameter {0} should not be assigned
> 60 = The final local variable {0} cannot be assigned, since it is defined in an enclosing type
>-61 = The local variable {0} is never read
>-62 = The parameter {0} is never read
>+61 = The local variable {0} is never used
>+62 = The parameter {0} is never used
> 63 = The code of method {0}({1}) is exceeding the 65535 bytes limit
> 64 = The code for the static initializer is exceeding the 65535 bytes limit
> 65 = Too many parameters, parameter {0} is exceeding the limit of 255 words eligible for method parameters
>@@ -65,13 +66,14 @@
> 74 = Cannot make a static reference to the non-static field {0}
> 75 = Cannot reference a field before it is defined
> 76 = The static field {0}.{1} should be accessed in a static way
>-77 = The field {0}.{1} is never read locally
>+77 = The private field {0}.{1} is never used
> 78 = The static field {0}.{1} should be accessed directly
> 79 = Unqualified access to the field {0}.{1} 
> 80 = The final field {0}.{1} cannot be assigned
> 81 = The blank final field {0} may not have been initialized
> 82 = The final field {0} may already have been assigned
> 83 = {0} cannot be resolved to a variable
>+84 = The field {0}.{1} is never used locally
> 
> 90 = The local variable {0} is hiding another local variable defined in an enclosing type scope
> 91 = The local variable {0} is hiding a field from type {1}
>Index: eval/org/eclipse/jdt/internal/eval/CodeSnippetFieldReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/eval/org/eclipse/jdt/internal/eval/CodeSnippetFieldReference.java,v
>retrieving revision 1.46
>diff -u -r1.46 CodeSnippetFieldReference.java
>--- eval/org/eclipse/jdt/internal/eval/CodeSnippetFieldReference.java	7 Mar 2009 01:08:09 -0000	1.46
>+++ eval/org/eclipse/jdt/internal/eval/CodeSnippetFieldReference.java	21 Oct 2010 19:00:23 -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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.eval;
> 
>@@ -325,7 +326,7 @@
> 		return null;
> 	}
> 
>-	if (isFieldUseDeprecated(this.binding, scope, (this.bits & IsStrictlyAssigned) !=0)) {
>+	if (isFieldUseDeprecated(this.binding, scope, this.bits)) {
> 		scope.problemReporter().deprecatedField(this.binding, this);
> 	}
> 	// check for this.x in static is done in the resolution of the receiver
>Index: eval/org/eclipse/jdt/internal/eval/CodeSnippetQualifiedNameReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/eval/org/eclipse/jdt/internal/eval/CodeSnippetQualifiedNameReference.java,v
>retrieving revision 1.59
>diff -u -r1.59 CodeSnippetQualifiedNameReference.java
>--- eval/org/eclipse/jdt/internal/eval/CodeSnippetQualifiedNameReference.java	18 Nov 2008 20:23:11 -0000	1.59
>+++ eval/org/eclipse/jdt/internal/eval/CodeSnippetQualifiedNameReference.java	21 Oct 2010 19:00:24 -0000
>@@ -1,5 +1,5 @@
> /*******************************************************************************
>- * Copyright (c) 2000, 2008 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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.eval;
> 
>@@ -463,7 +464,7 @@
> 			}
> 		}
> 		// only last field is actually a write access if any
>-		if (isFieldUseDeprecated((FieldBinding) this.binding, scope, (this.bits & IsStrictlyAssigned) !=0 && this.indexOfFirstFieldBinding == length)) {
>+		if (isFieldUseDeprecated((FieldBinding) this.binding, scope, this.indexOfFirstFieldBinding == length ? this.bits : 0)) {
> 			scope.problemReporter().deprecatedField((FieldBinding) this.binding, this);
> 		}
> 	}
>@@ -510,7 +511,7 @@
> 		}
> 		if (field.isValidBinding()) {
> 			// only last field is actually a write access if any
>-			if (isFieldUseDeprecated(field, scope, (this.bits & IsStrictlyAssigned) !=0 && index+1 == length)) {
>+			if (isFieldUseDeprecated(field, scope, index+1 == length ? this.bits : 0)) {
> 				scope.problemReporter().deprecatedField(field, this);
> 			}
> 			// constant propagation can only be performed as long as the previous one is a constant too.
>Index: eval/org/eclipse/jdt/internal/eval/CodeSnippetSingleNameReference.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/eval/org/eclipse/jdt/internal/eval/CodeSnippetSingleNameReference.java,v
>retrieving revision 1.58
>diff -u -r1.58 CodeSnippetSingleNameReference.java
>--- eval/org/eclipse/jdt/internal/eval/CodeSnippetSingleNameReference.java	7 Mar 2009 00:59:03 -0000	1.58
>+++ eval/org/eclipse/jdt/internal/eval/CodeSnippetSingleNameReference.java	21 Oct 2010 19:00:24 -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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.internal.eval;
> 
>@@ -101,7 +102,7 @@
> 	}
> 	this.constant = fieldBinding.constant();
> 
>-	if (isFieldUseDeprecated(fieldBinding, scope, (this.bits & IsStrictlyAssigned) !=0)) {
>+	if (isFieldUseDeprecated(fieldBinding, scope, this.bits)) {
> 		scope.problemReporter().deprecatedField(fieldBinding, this);
> 	}
> 	return fieldBinding.type;
>#P org.eclipse.jdt.core.tests.compiler
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/AnnotationTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/AnnotationTest.java,v
>retrieving revision 1.218
>diff -u -r1.218 AnnotationTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/AnnotationTest.java	22 Jun 2010 02:31:11 -0000	1.218
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/AnnotationTest.java	21 Oct 2010 19:00:48 -0000
>@@ -8,6 +8,7 @@
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>  *     Stephan Herrmann  - Contribution for bug 295551
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -9355,7 +9356,7 @@
> 			"1. ERROR in A.java (at line 3)\n" + 
> 			"	private int i;\n" + 
> 			"	            ^\n" + 
>-			"The field A.i is never read locally\n" + 
>+			"The private field A.i is never used\n" + 
> 			"----------\n";
> 	runNegativeTest(
> 			true,
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/AssignmentTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/AssignmentTest.java,v
>retrieving revision 1.65
>diff -u -r1.65 AssignmentTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/AssignmentTest.java	21 Jan 2010 16:48:42 -0000	1.65
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/AssignmentTest.java	21 Oct 2010 19:00:50 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -223,12 +224,12 @@
> 		"1. WARNING in X.java (at line 4)\n" +
> 		"	private final Object o;\n" +
> 		"	                     ^\n" +
>-		"The field X.Test1.o is never read locally\n" +
>+		"The private field X.Test1.o is never used\n" +
> 		"----------\n" +
> 		"2. WARNING in X.java (at line 13)\n" +
> 		"	private final Object o;\n" +
> 		"	                     ^\n" +
>-		"The field X.Test2.o is never read locally\n" +
>+		"The private field X.Test2.o is never used\n" +
> 		"----------\n" +
> 		"3. ERROR in X.java (at line 25)\n" +
> 		"	System.out.println(o); // illegal; o is not definitely assigned\n" +
>@@ -238,7 +239,7 @@
> 		"4. WARNING in X.java (at line 42)\n" +
> 		"	private final Object o;\n" +
> 		"	                     ^\n" +
>-		"The field X.Test5.o is never read locally\n" +
>+		"The private field X.Test5.o is never used\n" +
> 		"----------\n" +
> 		"5. ERROR in X.java (at line 44)\n" +
> 		"	Test5() {\n" +
>@@ -253,7 +254,7 @@
> 		"7. WARNING in X.java (at line 52)\n" +
> 		"	private final Object o;\n" +
> 		"	                     ^\n" +
>-		"The field X.Test6.o is never read locally\n" +
>+		"The private field X.Test6.o is never used\n" +
> 		"----------\n" +
> 		"8. ERROR in X.java (at line 59)\n" +
> 		"	other.o = new Object(); // illegal!  other.o is not assignable\n" +
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java,v
>retrieving revision 1.215
>diff -u -r1.215 BatchCompilerTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java	6 Oct 2010 13:57:31 -0000	1.215
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java	21 Oct 2010 19:01:08 -0000
>@@ -10,6 +10,7 @@
>  *     Benjamin Muskalla - Contribution for bug 239066
>  *     Stephan Herrmann  - Contribution for bug 236385
>  *     Stephan Herrmann  - Contribution for bug 295551
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -2879,7 +2880,7 @@
> 	        "7. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/p/Z.java (at line 58)\n" +
> 	        "	final XX<?, XY> l1 = (XX<?, XY>) i.getKey();\n" +
> 	        "	                ^^\n" +
>-	        "The local variable l1 is never read\n" +
>+	        "The local variable l1 is never used\n" +
> 	        "----------\n" +
> 	        "8. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/p/Z.java (at line 58)\n" +
> 	        "	final XX<?, XY> l1 = (XX<?, XY>) i.getKey();\n" +
>@@ -3059,7 +3060,7 @@
>         "7. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/p/Z.java (at line 58)\n" +
>         "	final XX<?, XY> l1 = (XX<?, XY>) i.getKey();\n" +
>         "	                ^^\n" +
>-        "The local variable l1 is never read\n" +
>+        "The local variable l1 is never used\n" +
>         "----------\n" +
>         "8. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/p/Z.java (at line 58)\n" +
>         "	final XX<?, XY> l1 = (XX<?, XY>) i.getKey();\n" +
>@@ -6228,7 +6229,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"2 problems (2 warnings)",
> 		true);
>@@ -6315,7 +6316,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -6347,7 +6348,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"2 problems (2 warnings)",
> 		true);
>@@ -6374,7 +6375,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -6400,7 +6401,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -6431,7 +6432,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"2 problems (2 warnings)",
> 		true);
>@@ -6463,7 +6464,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	String u;\n" +
> 		"	       ^\n" +
>-		"The local variable u is never read\n" +
>+		"The local variable u is never used\n" +
> 		"----------\n" +
> 		"2 problems (2 warnings)",
> 		true);
>@@ -7564,7 +7565,7 @@
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -7627,7 +7628,7 @@
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
>@@ -7637,7 +7638,7 @@
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"6. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -7682,7 +7683,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -7787,7 +7788,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -7942,7 +7943,7 @@
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -7992,7 +7993,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
>@@ -8002,7 +8003,7 @@
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -8057,7 +8058,7 @@
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
>@@ -8067,7 +8068,7 @@
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"6. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -8117,7 +8118,7 @@
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
>@@ -8172,7 +8173,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
>@@ -8182,7 +8183,7 @@
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -8237,12 +8238,12 @@
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	this.<String>bar();\n" +
>@@ -8297,7 +8298,7 @@
> 		"3. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
> 		"	                     ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"4. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" +
> 		"	private void foo(int i) throws java.io.IOException {\n" +
>@@ -8307,7 +8308,7 @@
> 		"5. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 4)\n" +
> 		"	int j;\n" +
> 		"	    ^\n" +
>-		"The local variable j is never read\n" +
>+		"The local variable j is never used\n" +
> 		"----------\n" +
> 		"6. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 6)\n" +
> 		"	next: for (;;) {\n" +
>@@ -8380,7 +8381,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	public void foo(int i) {\n" +
> 		"	                    ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -8471,7 +8472,7 @@
> 		"2. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	public void foo(int i) {\n" +
> 		"	                    ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"2 problems (2 warnings)",
> 		true);
>@@ -8497,7 +8498,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	public void foo(int i) {\n" +
> 		"	                    ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -8979,7 +8980,7 @@
> 		"1. WARNING in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 5)\n" +
> 		"	public void foo(int i) {\n" +
> 		"	                    ^\n" +
>-		"The parameter i is never read\n" +
>+		"The parameter i is never used\n" +
> 		"----------\n" +
> 		"1 problem (1 warning)",
> 		true);
>@@ -11334,7 +11335,7 @@
> 		"2. ERROR in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" + 
> 		"	private int i;\n" + 
> 		"	            ^\n" + 
>-		"The field X.i is never read locally\n" + 
>+		"The private field X.i is never used\n" + 
> 		"----------\n" + 
> 		"2 problems (1 error, 1 warning)",
> 		true);
>@@ -11374,7 +11375,7 @@
> 		"1. ERROR in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" + 
> 		"	private int i;\n" + 
> 		"	            ^\n" + 
>-		"The field X.i is never read locally\n" + 
>+		"The private field X.i is never used\n" + 
> 		"----------\n" + 
> 		"1 problem (1 error)",
> 		true);
>@@ -11397,7 +11398,7 @@
> 		"1. ERROR in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" + 
> 		"	private int i;\n" + 
> 		"	            ^\n" + 
>-		"The field X.i is never read locally\n" + 
>+		"The private field X.i is never used\n" + 
> 		"----------\n" + 
> 		"1 problem (1 error)",
> 		true);
>@@ -11425,7 +11426,7 @@
> 		"2. ERROR in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" + 
> 		"	private int i;\n" + 
> 		"	            ^\n" + 
>-		"The field X.i is never read locally\n" + 
>+		"The private field X.i is never used\n" + 
> 		"----------\n" + 
> 		"2 problems (1 error, 1 warning)",
> 		true);
>@@ -11448,7 +11449,7 @@
> 		"1. ERROR in ---OUTPUT_DIR_PLACEHOLDER---/X.java (at line 3)\n" + 
> 		"	private int i;\n" + 
> 		"	            ^\n" + 
>-		"The field X.i is never read locally\n" + 
>+		"The private field X.i is never used\n" + 
> 		"----------\n" + 
> 		"1 problem (1 error)",
> 		true);
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/CompilerInvocationTests.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/CompilerInvocationTests.java,v
>retrieving revision 1.37
>diff -u -r1.37 CompilerInvocationTests.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/CompilerInvocationTests.java	7 Sep 2010 13:39:17 -0000	1.37
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/CompilerInvocationTests.java	21 Oct 2010 19:01:12 -0000
>@@ -9,6 +9,7 @@
>  *     IBM Corporation - initial API and implementation
>  *     Benjamin Muskalla - Contribution for bug 239066
>  *     Stephan Herrmann  - Contribution for bug 236385
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -848,6 +849,7 @@
> 		expectedProblemAttributes.put("UnusedObjectAllocation", new ProblemAttributes(CategorizedProblem.CAT_POTENTIAL_PROGRAMMING_PROBLEM));
> 		expectedProblemAttributes.put("UnusedPrivateConstructor", new ProblemAttributes(CategorizedProblem.CAT_UNNECESSARY_CODE));
> 		expectedProblemAttributes.put("UnusedPrivateField", new ProblemAttributes(CategorizedProblem.CAT_UNNECESSARY_CODE));
>+		expectedProblemAttributes.put("UnusedScopedField", new ProblemAttributes(CategorizedProblem.CAT_UNNECESSARY_CODE));
> 		expectedProblemAttributes.put("UnusedPrivateMethod", new ProblemAttributes(CategorizedProblem.CAT_UNNECESSARY_CODE));
> 		expectedProblemAttributes.put("UnusedPrivateType", new ProblemAttributes(CategorizedProblem.CAT_UNNECESSARY_CODE));
> 		expectedProblemAttributes.put("UnusedTypeArgumentsForConstructorInvocation", new ProblemAttributes(CategorizedProblem.CAT_MEMBER));
>@@ -1482,6 +1484,7 @@
> 		expectedProblemAttributes.put("UnusedObjectAllocation", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_OBJECT_ALLOCATION));
> 		expectedProblemAttributes.put("UnusedPrivateConstructor", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER));
> 		expectedProblemAttributes.put("UnusedPrivateField", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER));
>+		expectedProblemAttributes.put("UnusedScopedField", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER));
> 		expectedProblemAttributes.put("UnusedPrivateMethod", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER));
> 		expectedProblemAttributes.put("UnusedPrivateType", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_PRIVATE_MEMBER));
> 		expectedProblemAttributes.put("UnusedTypeArgumentsForConstructorInvocation", new ProblemAttributes(JavaCore.COMPILER_PB_UNUSED_TYPE_ARGUMENTS_FOR_METHOD_INVOCATION));
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/Compliance_1_4.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/Compliance_1_4.java,v
>retrieving revision 1.108
>diff -u -r1.108 Compliance_1_4.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/Compliance_1_4.java	1 Jul 2010 04:39:13 -0000	1.108
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/Compliance_1_4.java	21 Oct 2010 19:01:16 -0000
>@@ -1713,7 +1713,7 @@
> 		"1. WARNING in p\\A.java (at line 6)\n" +
> 		"	private int i;\n" +
> 		"	            ^\n" +
>-		"The field A.i is never read locally\n" +
>+		"The private field A.i is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in p\\A.java (at line 8)\n" +
> 		"	int x = i;\n" +
>@@ -1946,7 +1946,7 @@
> 		"3. WARNING in p\\FieldQualification.java (at line 6)\n" +
> 		"	String field = \"Enclosing field for anonymous type\";\n" +
> 		"	       ^^^^^\n" +
>-		"The field Local.field is never read locally\n" +
>+		"The field Local.field is never used locally\n" +
> 		"----------\n" +
> 		"4. WARNING in p\\FieldQualification.java (at line 7)\n" +
> 		"	void foo() {\n" +
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/JavadocBugsTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/JavadocBugsTest.java,v
>retrieving revision 1.71
>diff -u -r1.71 JavadocBugsTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/JavadocBugsTest.java	18 Mar 2010 16:22:36 -0000	1.71
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/JavadocBugsTest.java	21 Oct 2010 19:01:27 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -7190,12 +7191,12 @@
> 		"1. WARNING in X.java (at line 2)\n" +
> 		"	private int unused1;\n" +
> 		"	            ^^^^^^^\n" +
>-		"The field X.unused1 is never read locally\n" +
>+		"The private field X.unused1 is never used\n" +
> 		"----------\n" +
> 		"2. WARNING in X.java (at line 7)\n" +
> 		"	private int unused2;\n" +
> 		"	            ^^^^^^^\n" +
>-		"The field X.unused2 is never read locally\n" +
>+		"The private field X.unused2 is never used\n" +
> 		"----------\n",
> 		null, null,
> 		JavacTestOptions.Excuse.EclipseHasSomeMoreWarnings
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/JavadocTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/JavadocTest.java,v
>retrieving revision 1.51
>diff -u -r1.51 JavadocTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/JavadocTest.java	11 May 2010 18:53:50 -0000	1.51
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/JavadocTest.java	21 Oct 2010 19:01:29 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -279,7 +280,7 @@
> 		"1. WARNING in test\\AbstractVisibility.java (at line 5)\n" + 
> 		"	public int avf_public = avf_private;\n" + 
> 		"	           ^^^^^^^^^^\n" + 
>-		"The field AbstractVisibility.AvcPrivate.avf_public is never read locally\n" + 
>+		"The field AbstractVisibility.AvcPrivate.avf_public is never used locally\n" + 
> 		"----------\n" + 
> 		"2. WARNING in test\\AbstractVisibility.java (at line 10)\n" + 
> 		"	public int avm_public() {\n" + 
>@@ -290,7 +291,7 @@
> 		"1. WARNING in test\\Visibility.java (at line 5)\n" + 
> 		"	public int vf_public = vf_private;\n" + 
> 		"	           ^^^^^^^^^\n" + 
>-		"The field Visibility.VcPrivate.vf_public is never read locally\n" + 
>+		"The field Visibility.VcPrivate.vf_public is never used locally\n" + 
> 		"----------\n" + 
> 		"2. WARNING in test\\Visibility.java (at line 11)\n" + 
> 		"	public int vm_public() {\n" + 
>@@ -301,7 +302,7 @@
> 		"1. WARNING in test\\copy\\VisibilityPackage.java (at line 5)\n" + 
> 		"	public int vf_public = vf_private;\n" + 
> 		"	           ^^^^^^^^^\n" + 
>-		"The field VisibilityPackage.VpPrivate.vf_public is never read locally\n" + 
>+		"The field VisibilityPackage.VpPrivate.vf_public is never used locally\n" + 
> 		"----------\n" + 
> 		"2. WARNING in test\\copy\\VisibilityPackage.java (at line 10)\n" + 
> 		"	public int vm_public() {\n" + 
>@@ -312,7 +313,7 @@
> 		"1. WARNING in test\\copy\\VisibilityPublic.java (at line 5)\n" + 
> 		"	public int vf_public = vf_private;\n" + 
> 		"	           ^^^^^^^^^\n" + 
>-		"The field VisibilityPublic.VpPrivate.vf_public is never read locally\n" + 
>+		"The field VisibilityPublic.VpPrivate.vf_public is never used locally\n" + 
> 		"----------\n" + 
> 		"2. WARNING in test\\copy\\VisibilityPublic.java (at line 10)\n" + 
> 		"	public int vm_public() {\n" + 
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/LocalVariableTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/LocalVariableTest.java,v
>retrieving revision 1.18
>diff -u -r1.18 LocalVariableTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/LocalVariableTest.java	27 Jun 2008 16:04:44 -0000	1.18
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/LocalVariableTest.java	21 Oct 2010 19:01:29 -0000
>@@ -1,5 +1,5 @@
> /*******************************************************************************
>- * Copyright (c) 2005, 2008 IBM Corporation and others.
>+ * Copyright (c) 2005, 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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -411,7 +412,7 @@
> 		"1. ERROR in X.java (at line 7)\n" +
> 		"	void bar(int value) { // X#bar(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n",
> 		// javac options
> 		JavacTestOptions.Excuse.EclipseWarningConfiguredAsError /* javac test options */);
>@@ -469,17 +470,17 @@
> 		"1. ERROR in X.java (at line 5)\n" +
> 		"	void foo(int value) { // X#foo(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in X.java (at line 7)\n" +
> 		"	void bar(int value) { // X#bar(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"3. ERROR in X.java (at line 24)\n" +
> 		"	void parent(int value) { /* Parent#parent(...) */}\n" +
> 		"	                ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n",
> 		// javac options
> 		JavacTestOptions.Excuse.EclipseWarningConfiguredAsError /* javac test options */);
>@@ -537,17 +538,17 @@
> 		"1. ERROR in X.java (at line 5)\n" +
> 		"	void foo(int value) { // X#foo(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in X.java (at line 7)\n" +
> 		"	void bar(int value) { // X#bar(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"3. ERROR in X.java (at line 24)\n" +
> 		"	void parent(int value) { /* Parent#parent(...) */}\n" +
> 		"	                ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n",
> 		// javac options
> 		JavacTestOptions.Excuse.EclipseWarningConfiguredAsError /* javac test options */);
>@@ -605,32 +606,32 @@
> 		"1. ERROR in X.java (at line 5)\n" +
> 		"	void foo(int value) { // X#foo(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in X.java (at line 7)\n" +
> 		"	void bar(int value) { // X#bar(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"3. ERROR in X.java (at line 10)\n" +
> 		"	void top(int value) { /* X#top(...)*/}\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"4. ERROR in X.java (at line 11)\n" +
> 		"	void parent(int value) { /* X#parent(...) */}\n" +
> 		"	                ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"5. ERROR in X.java (at line 12)\n" +
> 		"	public void doit(int value) { /* X#doit(...) */}\n" +
> 		"	                     ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"6. ERROR in X.java (at line 24)\n" +
> 		"	void parent(int value) { /* Parent#parent(...) */}\n" +
> 		"	                ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n",
> 		// javac options
> 		JavacTestOptions.Excuse.EclipseWarningConfiguredAsError /* javac test options */);
>@@ -683,32 +684,32 @@
> 		"1. ERROR in X.java (at line 3)\n" +
> 		"	void foo(int value) { // X#foo(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in X.java (at line 5)\n" +
> 		"	void bar(int value) { // X#bar(...)\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"3. ERROR in X.java (at line 9)\n" +
> 		"	void top(int value) { /* X#top(...)*/}\n" +
> 		"	             ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"4. ERROR in X.java (at line 11)\n" +
> 		"	void parent(int value) { /* X#parent(...) */}\n" +
> 		"	                ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"5. ERROR in X.java (at line 13)\n" +
> 		"	public void doit(int value) { /* X#doit(...) */}\n" +
> 		"	                     ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n" +
> 		"6. ERROR in X.java (at line 21)\n" +
> 		"	void parent(int value) { /* Parent#parent(...) */}\n" +
> 		"	                ^^^^^\n" +
>-		"The parameter value is never read\n" +
>+		"The parameter value is never used\n" +
> 		"----------\n",
> 		// javac options
> 		JavacTestOptions.Excuse.EclipseWarningConfiguredAsError /* javac test options */);
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/LookupTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/LookupTest.java,v
>retrieving revision 1.86
>diff -u -r1.86 LookupTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/LookupTest.java	13 Jul 2010 03:55:58 -0000	1.86
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/LookupTest.java	21 Oct 2010 19:01:34 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -94,7 +95,7 @@
> 		"1. WARNING in p1\\A.java (at line 3)\n" +
> 		"	private int value;								\n" +
> 		"	            ^^^^^\n" +
>-		"The field A.value is never read locally\n" +
>+		"The private field A.value is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in p1\\A.java (at line 6)\n" +
> 		"	value = 2;								\n" +
>@@ -344,7 +345,7 @@
> 		"1. WARNING in p1\\A.java (at line 3)\n" +
> 		"	private String success = \"SUCCESS\";			\n" +
> 		"	               ^^^^^^^\n" +
>-		"The field A.success is never read locally\n" +
>+		"The private field A.success is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in p1\\A.java (at line 7)\n" +
> 		"	public void aTask() {System.out.println(A.success);}\n" +
>@@ -2263,7 +2264,7 @@
> 				"1. WARNING in com\\internap\\other\\ScopeExample.java (at line 4)\r\n" +
> 				"	private static final String LOGGER = \"FAILED\";\r\n" +
> 				"	                            ^^^^^^\n" +
>-				"The field ScopeExample.LOGGER is never read locally\n" +
>+				"The private field ScopeExample.LOGGER is never used\n" +
> 				"----------\n" +
> 				"2. ERROR in com\\internap\\other\\ScopeExample.java (at line 8)\r\n" +
> 				"	System.out.println(LOGGER);\r\n" +
>@@ -2654,7 +2655,7 @@
> 		"1. WARNING in X.java (at line 2)\n" +
> 		"	private String value;\n" +
> 		"	               ^^^^^\n" +
>-		"The field D.value is never read locally\n" +
>+		"The private field D.value is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in X.java (at line 13)\n" +
> 		"	super(getValue());\n" +
>@@ -3264,12 +3265,12 @@
> 		"2. WARNING in B.java (at line 3)\n" + 
> 		"	public final String length = \"very long\";\n" + 
> 		"	                    ^^^^^^\n" + 
>-		"The field A.B.length is never read locally\n" + 
>+		"The field A.B.length is never used locally\n" + 
> 		"----------\n" + 
> 		"3. WARNING in B.java (at line 5)\n" + 
> 		"	private int [] B = new int[5];\n" + 
> 		"	               ^\n" + 
>-		"The field A.B is never read locally\n" + 
>+		"The private field A.B is never used\n" + 
> 		"----------\n" + 
> 		"4. ERROR in B.java (at line 9)\n" + 
> 		"	System.out.println(A.B.length);\n" + 
>@@ -3298,12 +3299,12 @@
> 		"1. WARNING in B.java (at line 3)\n" + 
> 		"	private final String length = \"very long\";\n" + 
> 		"	                     ^^^^^^\n" + 
>-		"The field A.B.length is never read locally\n" + 
>+		"The private field A.B.length is never used\n" + 
> 		"----------\n" + 
> 		"2. WARNING in B.java (at line 5)\n" + 
> 		"	private int [] B = new int[5];\n" + 
> 		"	               ^\n" + 
>-		"The field A.B is never read locally\n" + 
>+		"The private field A.B is never used\n" + 
> 		"----------\n" + 
> 		"3. ERROR in B.java (at line 9)\n" + 
> 		"	System.out.println(A.B.length);\n" + 
>@@ -3338,17 +3339,17 @@
> 		"1. WARNING in A.java (at line 2)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.x is never read locally\n" + 
>+		"The private field A.x is never used\n" + 
> 		"----------\n" + 
> 		"2. WARNING in A.java (at line 4)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.B.x is never read locally\n" + 
>+		"The private field A.B.x is never used\n" + 
> 		"----------\n" + 
> 		"3. WARNING in A.java (at line 5)\n" + 
> 		"	private C c = new C() {\n" + 
> 		"	          ^\n" + 
>-		"The field A.B.c is never read locally\n" + 
>+		"The private field A.B.c is never used\n" + 
> 		"----------\n" + 
> 		"4. WARNING in A.java (at line 6)\n" + 
> 		"	void foo() {\n" + 
>@@ -3363,7 +3364,7 @@
> 		"6. WARNING in A.java (at line 12)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.C.x is never read locally\n" + 
>+		"The private field A.C.x is never used\n" + 
> 		"----------\n");
> }
> // https://bugs.eclipse.org/bugs/show_bug.cgi?id=316956
>@@ -3393,17 +3394,17 @@
> 		"1. WARNING in A.java (at line 2)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.x is never read locally\n" + 
>+		"The private field A.x is never used\n" + 
> 		"----------\n" + 
> 		"2. WARNING in A.java (at line 4)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.B.x is never read locally\n" + 
>+		"The private field A.B.x is never used\n" + 
> 		"----------\n" + 
> 		"3. WARNING in A.java (at line 5)\n" + 
> 		"	private C c = new C() {\n" + 
> 		"	          ^\n" + 
>-		"The field A.B.c is never read locally\n" + 
>+		"The private field A.B.c is never used\n" + 
> 		"----------\n" + 
> 		"4. WARNING in A.java (at line 6)\n" + 
> 		"	void foo() {\n" + 
>@@ -3435,12 +3436,12 @@
> 		"1. WARNING in A.java (at line 2)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.x is never read locally\n" + 
>+		"The private field A.x is never used\n" + 
> 		"----------\n" + 
> 		"2. WARNING in A.java (at line 3)\n" + 
> 		"	private C c = new C() {\n" + 
> 		"	          ^\n" + 
>-		"The field A.c is never read locally\n" + 
>+		"The private field A.c is never used\n" + 
> 		"----------\n" + 
> 		"3. WARNING in A.java (at line 4)\n" + 
> 		"	void foo() {\n" + 
>@@ -3455,7 +3456,7 @@
> 		"5. WARNING in A.java (at line 9)\n" + 
> 		"	private int x;\n" + 
> 		"	            ^\n" + 
>-		"The field A.C.x is never read locally\n" + 
>+		"The private field A.C.x is never used\n" + 
> 		"----------\n");
> }
> public static Class testClass() {	return LookupTest.class;
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java,v
>retrieving revision 1.24
>diff -u -r1.24 ProblemConstructorTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java	28 Apr 2009 17:17:33 -0000	1.24
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/ProblemConstructorTest.java	21 Oct 2010 19:01:34 -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
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -185,7 +186,7 @@
> 		"3. WARNING in X.java (at line 6)\n" + 
> 		"	public int unusedField = 0;\n" + 
> 		"	           ^^^^^^^^^^^\n" + 
>-		"The field X.M.unusedField is never read locally\n" + 
>+		"The field X.M.unusedField is never used locally\n" + 
> 		"----------\n" + 
> 		"4. WARNING in X.java (at line 7)\n" + 
> 		"	public class N {}\n" + 
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java,v
>retrieving revision 1.25
>diff -u -r1.25 ProgrammingProblemsTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java	23 Sep 2010 12:03:44 -0000	1.25
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/ProgrammingProblemsTest.java	21 Oct 2010 19:01:37 -0000
>@@ -7,19 +7,21 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
> import java.util.HashMap;
> import java.util.Map;
> 
>+import junit.framework.Test;
>+
> import org.eclipse.jdt.core.JavaCore;
> import org.eclipse.jdt.core.compiler.CategorizedProblem;
> import org.eclipse.jdt.internal.compiler.CompilationResult;
> import org.eclipse.jdt.internal.compiler.ICompilerRequestor;
> import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
> import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
>-import junit.framework.Test;
> 
> /* Collects potential programming problems tests that are not segregated in a
>  * dedicated test class (aka NullReferenceTest). */
>@@ -34,7 +36,7 @@
>   	// Only the highest compliance level is run; add the VM argument
>   	// -Dcompliance=1.4 (for example) to lower it if needed
>   	static {
>-//    	TESTS_NAMES = new String[] { "test001" };
>+//    	TESTS_NAMES = new String[] { "test0047" };
> //		TESTS_NUMBERS = new int[] { 43 };
> //  	TESTS_RANGE = new int[] { 1, -1 };
>   	}
>@@ -143,7 +145,7 @@
> 		"1. WARNING in X.java (at line 2)\r\n" +
> 		"	public void foo(boolean b) {\r\n" +
> 		"	                        ^\n" +
>-		"The parameter b is never read\n" +
>+		"The parameter b is never used\n" +
> 		"----------\n" /* expectedCompilerLog */,
> 		"" /* expectedOutputString */,
> 		false /* forceExecution */,
>@@ -214,7 +216,7 @@
> 		"1. WARNING in X.java (at line 3)\n" +
> 		"	public void foo(boolean b) {\n" +
> 		"	                        ^\n" +
>-		"The parameter b is never read\n" +
>+		"The parameter b is never used\n" +
> 		"----------\n" /* expectedCompilerLog */,
> 		"" /* expectedOutputString */,
> 		false /* forceExecution */,
>@@ -279,7 +281,7 @@
> 		"1. ERROR in X.java (at line 2)\r\n" +
> 		"	public void foo(boolean b) {\r\n" +
> 		"	                        ^\n" +
>-		"The parameter b is never read\n" +
>+		"The parameter b is never used\n" +
> 		"----------\n" /* expectedCompilerLog */,
> 		"" /* expectedOutputString */,
> 		false /* forceExecution */,
>@@ -555,7 +557,7 @@
> 		"1. WARNING in X.java (at line 3)\n" +
> 		"	void foo(int unused) throws IOException {}\n" +
> 		"	             ^^^^^^\n" +
>-		"The parameter unused is never read\n" +
>+		"The parameter unused is never used\n" +
> 		"----------\n" +
> 		"2. ERROR in X.java (at line 3)\n" +
> 		"	void foo(int unused) throws IOException {}\n" +
>@@ -594,7 +596,7 @@
> 		"1. WARNING in X.java (at line 3)\n" +
> 		"	void foo(int unused) throws IOException {}\n" +
> 		"	             ^^^^^^\n" +
>-		"The parameter unused is never read\n" +
>+		"The parameter unused is never used\n" +
> 		"----------\n" +
> 		"2. WARNING in X.java (at line 3)\n" +
> 		"	void foo(int unused) throws IOException {}\n" +
>@@ -631,7 +633,7 @@
> 		"1. ERROR in X.java (at line 2)\n" +
> 		"	public X(boolean b) {\n" +
> 		"	                 ^\n" +
>-		"The parameter b is never read\n" +
>+		"The parameter b is never used\n" +
> 		"----------\n" /* expectedCompilerLog */,
> 		"" /* expectedOutputString */,
> 		false /* forceExecution */,
>@@ -1683,4 +1685,416 @@
> 		"The assignment to variable nvx has no effect\n" + 
> 		"----------\n");
> }
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+public void test0046() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" + 
>+				"    int foo() {\n" + 
>+				"        int i=1;\n" + 
>+				"        boolean b=false;\n" + 
>+				"        b|=true;\n" + 			// not a relevant usage
>+				"        int k = 2;\n" + 
>+				"        --k;\n" + 				// not a relevant usage
>+				"        k+=3;\n" + 			// not a relevant usage
>+				"        Integer j = 3;\n" + 
>+				"        j++;\n" + 				// relevant because unboxing is involved
>+				"        i++;\n" +				// not relevant but should still not report because next is relevant
>+				"        return i++;\n" + 		// value after increment is used
>+				"    }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 4)\n" + 
>+			"	boolean b=false;\n" + 
>+			"	        ^\n" + 
>+			"The local variable b is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 6)\n" + 
>+			"	int k = 2;\n" + 
>+			"	    ^\n" + 
>+			"The local variable k is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// variant with private fields instead of locals
>+public void test0046_field() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" + 
>+				"    private int i=1;\n" + 
>+				"    private boolean b=false;\n" + 
>+				"    private int k = 2;\n" + 
>+				"    private Integer j = 3;\n" + 
>+				"    int foo() {\n" + 
>+				"        b|=true;\n" + 			// not a relevant usage
>+				"        --k;\n" + 				// not a relevant usage
>+				"        k+=3;\n" + 			// not a relevant usage
>+				"        j++;\n" + 				// relevant because unboxing is involved
>+				"        return i++;\n" + 		// value after increment is used
>+				"    }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 3)\n" + 
>+			"	private boolean b=false;\n" + 
>+			"	                ^\n" + 
>+			"The private field X.b is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 4)\n" + 
>+			"	private int k = 2;\n" + 
>+			"	            ^\n" + 
>+			"The private field X.k is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// variant with private fields instead of locals - this-qualified access
>+public void test0046_field_this_qualified() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" + 
>+				"    private int i=1;\n" + 
>+				"    private boolean b=false;\n" + 
>+				"    private int k = 2;\n" + 
>+				"    private Integer j = 3;\n" + 
>+				"    int foo() {\n" + 
>+				"        this.b|=true;\n" + 		// not a relevant usage
>+				"        --this.k;\n" + 			// not a relevant usage
>+				"        getThis().k+=3;\n" + 		// not a relevant usage
>+				"        this.j++;\n" + 			// relevant because unboxing is involved
>+				"        return this.i++;\n" + 		// value after increment is used
>+				"    }\n" +
>+				"    X getThis() { return this; }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 3)\n" + 
>+			"	private boolean b=false;\n" + 
>+			"	                ^\n" + 
>+			"The private field X.b is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 4)\n" + 
>+			"	private int k = 2;\n" + 
>+			"	            ^\n" + 
>+			"The private field X.k is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// variant with private fields instead of locals - regular qualified access
>+public void test0046_field_qualified() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" + 
>+				"    private int i=1;\n" + 
>+				"    private boolean b=false;\n" + 
>+				"    private int k = 2;\n" + 
>+				"    private Integer j = 3;\n" + 
>+				"    int foo(X that) {\n" + 
>+				"        that.b|=true;\n" + 		// not a relevant usage
>+				"        --that.k;\n" + 			// not a relevant usage
>+				"        that.k+=3;\n" + 			// not a relevant usage
>+				"        that.j++;\n" + 			// relevant because unboxing is involved
>+				"        that.i++;\n"+				// not relevant but should still not report because next is relevant
>+				"        return that.i++;\n" + 		// value after increment is used
>+				"    }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 3)\n" + 
>+			"	private boolean b=false;\n" + 
>+			"	                ^\n" + 
>+			"The private field X.b is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 4)\n" + 
>+			"	private int k = 2;\n" + 
>+			"	            ^\n" + 
>+			"The private field X.k is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// variant with fields inside a private type
>+public void test0046_field_in_private_type() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" +
>+				"    private class Y {\n" + 
>+				"        int i=1;\n" + 
>+				"        public boolean b=false;\n" + 
>+				"        protected int k = 2;\n" + 
>+				"        Integer j = 3;\n" +
>+				"    }\n" + 
>+				"    int foo(Y y) {\n" + 
>+				"        y.b|=true;\n" + 				// not a relevant usage
>+				"        --y.k;\n" + 					// not a relevant usage
>+				"        y.k+=3;\n" + 					// not a relevant usage
>+				"        y.j++;\n" + 					// relevant because unboxing is involved
>+				"        int result = y.i++;\n" + 	// value after increment is used
>+				"        y.i++;\n" +					// not relevant, but previous is
>+				"        return result;\n" +
>+				"    }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 4)\n" + 
>+			"	public boolean b=false;\n" + 
>+			"	               ^\n" + 
>+			"The field X.Y.b is never used locally\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 5)\n" + 
>+			"	protected int k = 2;\n" + 
>+			"	              ^\n" + 
>+			"The field X.Y.k is never used locally\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+public void test0047() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedParameter, CompilerOptions.WARNING);
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" + 
>+				"    void foo(int param1, int param2, Integer param3) {\n" + 
>+				"        boolean b=false;\n" + 
>+				"        b|=true;\n" + 			// not a relevant usage
>+				"        param1++;\n" + 		// not a relevant usage
>+				"        {\n" +
>+				"            int val=23;\n" +
>+				"            param2 += val;\n" +// not a relevant usage of param2
>+				"        }\n" +
>+				"        param3++;\n" + 		// relevant because unboxing is involved
>+				"    }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 2)\n" + 
>+			"	void foo(int param1, int param2, Integer param3) {\n" + 
>+			"	             ^^^^^^\n" + 
>+			"The parameter param1 is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 2)\n" + 
>+			"	void foo(int param1, int param2, Integer param3) {\n" + 
>+			"	                         ^^^^^^\n" + 
>+			"The parameter param2 is never used\n" + 
>+			"----------\n" + 
>+			"3. WARNING in X.java (at line 3)\n" + 
>+			"	boolean b=false;\n" + 
>+			"	        ^\n" + 
>+			"The local variable b is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// To verify that unused parameter warning is not shown for an implementing method's parameter when
>+// CompilerOptions.OPTION_ReportUnusedParameterWhenImplementingAbstract is disabled
>+public void test0048() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedParameter, CompilerOptions.WARNING);
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedParameterWhenImplementingAbstract, CompilerOptions.DISABLED);
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"public class X extends A implements Y{\n" + 
>+				"   public void foo(int param1, int param2, Integer param3) {\n" + // implementing method, so dont warn
>+				"        boolean b=false;\n" + 
>+				"        b|=true;\n" + 			// not a relevant usage
>+				"        param1++;\n" + 		// not a relevant usage
>+				"        param2 += 1;\n" + 		// not a relevant usage
>+				"        param3++;\n" + 		// relevant because unboxing is involved
>+				"    }\n" + 
>+				"   public void foo(int param1, int param2) {\n" + // warn
>+				"        boolean b=false;\n" + 
>+				"        b|=true;\n" + 			// not a relevant usage
>+				"        param1++;\n" + 		// not a relevant usage
>+				"        param2 += 1;\n" + 		// not a relevant usage
>+				"    }\n" +
>+				"   public void bar(int param1, int param2, Integer param3) {\n" + // implementing method, so dont warn
>+				"        param1++;\n" + 		// not a relevant usage
>+				"        param2 += 1;\n" + 		// not a relevant usage
>+				"        param3++;\n" + 		// relevant because unboxing is involved
>+				"    }\n" +
>+				"}\n" +
>+				"interface Y{\n" +
>+				"	public void foo(int param1, int param2, Integer param3);" +
>+				"}\n" +
>+				"abstract class A{\n" +
>+				"	public abstract void bar(int param1, int param2, Integer param3);" +
>+				"}\n"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 3)\n" + 
>+			"	boolean b=false;\n" + 
>+			"	        ^\n" + 
>+			"The local variable b is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 9)\n" + 
>+			"	public void foo(int param1, int param2) {\n" + 
>+			"	                    ^^^^^^\n" + 
>+			"The parameter param1 is never used\n" + 
>+			"----------\n" + 
>+			"3. WARNING in X.java (at line 9)\n" + 
>+			"	public void foo(int param1, int param2) {\n" + 
>+			"	                                ^^^^^^\n" + 
>+			"The parameter param2 is never used\n" + 
>+			"----------\n" + 
>+			"4. WARNING in X.java (at line 10)\n" + 
>+			"	boolean b=false;\n" + 
>+			"	        ^\n" + 
>+			"The local variable b is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// To verify that unused parameter warning is not shown for an overriding method's parameter when
>+// CompilerOptions.OPTION_ReportUnusedParameterWhenOverridingConcrete is disabled
>+public void test0049() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedParameter, CompilerOptions.WARNING);
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedParameterWhenOverridingConcrete, CompilerOptions.DISABLED);
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"public class X extends A {\n" + 
>+				"   public void foo(int param1, int param2, Integer param3) {\n" + // overriding method, so dont warn
>+				"        boolean b=false;\n" + 
>+				"        b|=true;\n" + 			// not a relevant usage
>+				"        param1++;\n" + 		// not a relevant usage
>+				"        param2 += 1;\n" + 		// not a relevant usage
>+				"        param3++;\n" + 		// relevant because unboxing is involved
>+				"    }\n" + 
>+				"   public void foo(int param1, Integer param3) {\n" + // overriding method, so dont warn
>+				"        param1++;\n" + 		// not a relevant usage
>+				"        param3++;\n" + 		// relevant because unboxing is involved
>+				"    }\n" + 
>+				"}\n" +
>+				"class A{\n" +
>+				"   public void foo(int param1, int param2, Integer param3) {\n" +
>+				"        param1 -=1;\n" + 		// not a relevant usage
>+				"        param2--;\n" + 		// not a relevant usage
>+				"        param3--;\n" + 		// relevant because unboxing is involved
>+				"    }\n" + 
>+				"}\n"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 3)\n" + 
>+			"	boolean b=false;\n" + 
>+			"	        ^\n" + 
>+			"The local variable b is never used\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 9)\n" + 
>+			"	public void foo(int param1, Integer param3) {\n" + 
>+			"	                    ^^^^^^\n" + 
>+			"The parameter param1 is never used\n" + 
>+			"----------\n" + 
>+			"3. WARNING in X.java (at line 15)\n" + 
>+			"	public void foo(int param1, int param2, Integer param3) {\n" + 
>+			"	                    ^^^^^^\n" + 
>+			"The parameter param1 is never used\n" + 
>+			"----------\n" + 
>+			"4. WARNING in X.java (at line 15)\n" + 
>+			"	public void foo(int param1, int param2, Integer param3) {\n" + 
>+			"	                                ^^^^^^\n" + 
>+			"The parameter param2 is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
>+// https://bugs.eclipse.org/bugs/show_bug.cgi?id=185682
>+// To verify that unused local warning is not shown for locals declared in unreachable code
>+public void test0050() {
>+	if (this.complianceLevel < ClassFileConstants.JDK1_5)
>+		return;
>+	Map customOptions = getCompilerOptions();
>+	customOptions.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.WARNING);
>+	this.runNegativeTest(
>+			new String[] {
>+				"X.java",
>+				"class X {\n" + 
>+				"    int foo() {\n" + 
>+				"        int i=1;\n" +
>+				"		 if (false) {\n" + 
>+				"        	boolean b=false;\n" + // don't complain as unused
>+				"        	b|=true;\n" +
>+				"		 }\n" + 			// not a relevant usage
>+				"        int k = 2;\n" + 
>+				"        --k;\n" + 			// not a relevant usage
>+				"        k+=3;\n" + 		// not a relevant usage
>+				"        Integer j = 3;\n" + 
>+				"        j++;\n" + 			// relevant because unboxing is involved
>+				"        return i++;\n" + 	// value after increment is used
>+				"    }\n" + 
>+				"}"
>+			},
>+			"----------\n" + 
>+			"1. WARNING in X.java (at line 4)\n" + 
>+			"	if (false) {\n" + 
>+			"        	boolean b=false;\n" + 
>+			"        	b|=true;\n" + 
>+			"		 }\n" + 
>+			"	           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" + 
>+			"Dead code\n" + 
>+			"----------\n" + 
>+			"2. WARNING in X.java (at line 8)\n" + 
>+			"	int k = 2;\n" + 
>+			"	    ^\n" + 
>+			"The local variable k is never used\n" + 
>+			"----------\n",
>+			null/*classLibraries*/,
>+			true/*shouldFlushOutputDirectory*/,
>+			customOptions);
>+}
> }
>\ No newline at end of file
>Index: src/org/eclipse/jdt/core/tests/compiler/regression/StaticImportTest.java
>===================================================================
>RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/StaticImportTest.java,v
>retrieving revision 1.79
>diff -u -r1.79 StaticImportTest.java
>--- src/org/eclipse/jdt/core/tests/compiler/regression/StaticImportTest.java	15 Apr 2010 15:18:23 -0000	1.79
>+++ src/org/eclipse/jdt/core/tests/compiler/regression/StaticImportTest.java	21 Oct 2010 19:01:39 -0000
>@@ -7,6 +7,7 @@
>  *
>  * Contributors:
>  *     IBM Corporation - initial API and implementation
>+ *     Stephan Herrmann <stephan@cs.tu-berlin.de> - Contribution for bug 185682 - Increment/decrement operators mark local variables as read
>  *******************************************************************************/
> package org.eclipse.jdt.core.tests.compiler.regression;
> 
>@@ -660,7 +661,7 @@
> 			"1. WARNING in bug\\C.java (at line 3)\n" +
> 			"	private static B b;\n" +
> 			"	                 ^\n" +
>-			"The field C.b is never read locally\n" +
>+			"The private field C.b is never used\n" +
> 			"----------\n");
> 	}
>

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Attachments on bug 185682: 174421 | 178716 | 178806 | 181232 | 181235 | 181303 | 181409 | 181419 | 181439 | 181481 | 181557