Bug 96926 [quick fix] Change method return type quick fix gives invalid proposal for wildcard types
Against I20050527-0010: Code: void a() { ArrayList<? extends Number> b = null; return b.get(0); } Ask for a quick fix on the compile error. Three things happen: 1) BAD: The quick fix is entitled "Change method return type to '? extends Number'". 2) GOOD: The correct return type, Number, is shown originally. 3) BAD: However, the top completion proposal, and the one chosen if the user simply hits return, is "? extends Number", which creates a compile error.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/UnresolvedElementsSubProcessor.java
if (!senderDeclBinding.isFromSource() || targetCU == null || !JavaModelUtil.isEditable(targetCU)) {
			return;
		}
		addNewFieldForType(targetCU, binding, senderDeclBinding, simpleName, isWriteAccess, proposals);
		if (binding == null && senderDeclBinding.isNested()) {
			ASTNode anonymDecl= astRoot.findDeclaringNode(senderDeclBinding);
			if (anonymDecl != null) {
				ITypeBinding bind= Bindings.getBindingOfParentType(anonymDecl.getParent());
				if (!bind.isAnonymous()) {
					addNewFieldForType(targetCU, bind, bind, simpleName, isWriteAccess, proposals);
				}
			}
		}
	}
	private static void addNewFieldForType(ICompilationUnit targetCU, ITypeBinding binding, ITypeBinding senderDeclBinding, SimpleName simpleName, boolean isWriteAccess, Collection proposals) {
		String name= simpleName.getIdentifier();
		String label;
		Image image;
		if (senderDeclBinding.isEnum() && !isWriteAccess) {
			label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createenum_description, new Object[] { name, ASTResolving.getTypeSignature(senderDeclBinding) });
			image= JavaPluginImages.get(JavaPluginImages.IMG_FIELD_PUBLIC);
			proposals.add(new NewVariableCompletionProposal(label, targetCU, NewVariableCompletionProposal.ENUM_CONST, simpleName, senderDeclBinding, 10, image));
		} else {
			if (binding == null) {
				label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createfield_description, name);
				image= JavaPluginImages.get(JavaPluginImages.IMG_FIELD_PRIVATE);
			} else {
				label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createfield_other_description, new Object[] { name, ASTResolving.getTypeSignature(senderDeclBinding) } );
				image= JavaPluginImages.get(JavaPluginImages.IMG_FIELD_PUBLIC);
			}