Images can cause crashes if the Handle is of size (0, 0)

[Brogolem35]

Is your issue REALLY a bug?

• My issue is indeed a bug!
• I am not crazy! I will not fill out this form just to ask a question or request a feature. Pinky promise.

Is there an existing issue for this?

• I have searched the existing issues.

Is this issue related to iced?

• My hardware is compatible and my graphics drivers are up-to-date.

What happened?

use iced::{Element, widget::image};

fn main() -> iced::Result {
    iced::application(App, App::update, App::view).run()
}

struct App();

impl App {
    fn view(&self) -> Element<'_, Message> {
        let placeholder = image::Handle::from_rgba(0, 0, vec![]); // crashes
        // let placeholder = image::Handle::from_rgba(1, 1, vec![0; 4]); // does not crash
        image(placeholder).into()
    }

    fn update(&mut self, _: Message) {}
}

enum Message {}

The given program panics with the logs given below whenever it tries to render the image. It should either disallow accepting 0s as arguments (via NonZero), render an empty image or panic with a more debuggable message.

What is the expected behavior?

Empty image or a panic with a better message.

Version

master

Operating System

Linux

Do you have any log output?

https://gist.github.com/Brogolem35/8d8569c0bfea2935e3ef6678952fb652

[edwloef]

Sounds like this could be fixed by #3215?