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
Expression sender= invocationNode.getExpression();
		if (sender instanceof ThisExpression) {
			return;
		}
		ITypeBinding senderBinding= sender.resolveTypeBinding();
		if (senderBinding == null || Modifier.isFinal(senderBinding.getModifiers())) {
			return;
		}
		if (sender instanceof Name && ((Name) sender).resolveBinding() instanceof ITypeBinding) {
			return; 
		}
		ASTNode parent= invocationNode.getParent();
		while (parent instanceof Expression && parent.getNodeType() != ASTNode.CAST_EXPRESSION) {
			parent= parent.getParent();
		}
		boolean hasCastProposal= false;
		if (parent instanceof CastExpression) {
			
			hasCastProposal= useExistingParentCastProposal(cu, (CastExpression) parent, sender, invocationNode.getName(), getArgumentTypes(invocationNode.arguments()), proposals);
		}
		if (!hasCastProposal) {
			
			Expression target= sender;
			while (target instanceof ParenthesizedExpression) {
				target= ((ParenthesizedExpression) target).getExpression();
			}
			String label;
			if (target.getNodeType() != ASTNode.CAST_EXPRESSION) {
				String targetName= null;
				if (target.getLength() <= 18) {