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/ReturnTypeSubProcessor.java
String label= CorrectionMessages.ReturnTypeSubProcessor_changetovoid_description;
				Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
				ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, cu, rewrite, 5, image);
				proposals.add(proposal);
			}
		}
	}
	public static void addMethodRetunsVoidProposals(IInvocationContext context, IProblemLocation problem, Collection proposals) throws JavaModelException {
		CompilationUnit astRoot= context.getASTRoot();
		ASTNode selectedNode= problem.getCoveringNode(astRoot);
		if (!(selectedNode instanceof ReturnStatement)) {
			return;
		}
		ReturnStatement returnStatement= (ReturnStatement) selectedNode;
		Expression expression= returnStatement.getExpression();
		if (expression == null) {
			return;
		}
		BodyDeclaration decl= ASTResolving.findParentBodyDeclaration(selectedNode);
		if (decl instanceof MethodDeclaration) {
			MethodDeclaration methDecl= (MethodDeclaration) decl;
			Type retType= methDecl.getReturnType2();
			if (retType == null || retType.resolveBinding() == null) {
				return;
			}
			TypeMismatchSubProcessor.addChangeSenderTypeProposals(context, expression, retType.resolveBinding(), false, 4, proposals);
		}
	}
}