VS warning: Disposable object created by 'disposable' is never disposed, why?

问题

I am writing a C# application and have stumbled across something that makes me unsure if it is a Visual Studio bug, or my knowledge is incorrect.

The culprit is a using statement inside "catch" part of a try/catch, where Visual Studio 2019 shows a warning that a disposable object will not be disposed:

Disposable object created by 'MakeMeSomeDisposableObject()'s is never disposed

The same statement used outside the catch, shows no warning message.

Here is an example of what I am talking about:

try
{
    SomeMethodThrowingExceptions();
}
catch
{
    using(var someDisposableObject = MakeMeSomeDisposableObjects())
    {
        someDisposableObject.SaveTheWorldFromException();
    }
}

My understanding is that in case of an exception - the disposable object will save the world and get disposed of after finishing its job because of the using statement. Visual Studio however thinks otherwise and shows a warning message, but also shows no fix - is this a VS bug or am I wrong about how using statements work in a catch?

来源：https://stackoverflow.com/questions/57926135/vs-warning-disposable-object-created-by-disposable-is-never-disposed-why