### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/ast/AllocationExpression.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/AllocationExpression.java,v
retrieving revision 1.68
diff -u -r1.68 AllocationExpression.java
--- compiler/org/eclipse/jdt/internal/compiler/ast/AllocationExpression.java	26 Apr 2007 21:03:26 -0000	1.68
+++ compiler/org/eclipse/jdt/internal/compiler/ast/AllocationExpression.java	2 May 2007 03:17:35 -0000
@@ -84,7 +84,8 @@
 	ReferenceBinding allocatedType = this.codegenBinding.declaringClass;
 
 	codeStream.new_(allocatedType);
-	if (valueRequired) {
+	boolean isUnboxing = (implicitConversion & TypeIds.UNBOXING) != 0;
+	if (valueRequired || isUnboxing) {
 		codeStream.dup();
 	}
 	// better highlight for allocation: display the type individually
@@ -126,7 +127,17 @@
 		}
 		codeStream.invokespecial(syntheticAccessor);
 	}
-	codeStream.generateImplicitConversion(this.implicitConversion);
+	codeStream.generateImplicitConversion(implicitConversion);
+	if (!valueRequired && isUnboxing) {
+		switch (postConversionType(currentScope).id) {
+			case T_long :
+			case T_double :
+				codeStream.pop2();
+				break;
+			default :
+				codeStream.pop();
+		}
+	}
 	codeStream.recordPositionsFrom(pc, this.sourceStart);
 }