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# Objective Continuation of #2964 (I really should have checked other methods when I made that PR) yeet unsound lifetime annotations on `Query` methods. Example unsoundness: ```rust use bevy::prelude::*; fn main() { App::new().add_startup_system(bar).add_system(foo).run(); } pub fn bar(mut cmds: Commands) { let e = cmds.spawn().insert(Foo { a: 10 }).id(); cmds.insert_resource(e); } #[derive(Component, Debug, PartialEq, Eq)] pub struct Foo { a: u32, } pub fn foo(mut query: Query<&mut Foo>, e: Res<Entity>) { dbg!("hi"); { let data: &Foo = query.get(*e).unwrap(); let data2: Mut<Foo> = query.get_mut(*e).unwrap(); assert_eq!(data, &*data2); // oops UB } { let data: &Foo = query.single(); let data2: Mut<Foo> = query.single_mut(); assert_eq!(data, &*data2); // oops UB } { let data: &Foo = query.get_single().unwrap(); let data2: Mut<Foo> = query.get_single_mut().unwrap(); assert_eq!(data, &*data2); // oops UB } { let data: &Foo = query.iter().next().unwrap(); let data2: Mut<Foo> = query.iter_mut().next().unwrap(); assert_eq!(data, &*data2); // oops UB } { let mut opt_data: Option<&Foo> = None; let mut opt_data_2: Option<Mut<Foo>> = None; query.for_each(|data| opt_data = Some(data)); query.for_each_mut(|data| opt_data_2 = Some(data)); assert_eq!(opt_data.unwrap(), &*opt_data_2.unwrap()); // oops UB } dbg!("bye"); } ``` ## Solution yeet unsound lifetime annotations on `Query` methods Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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| .. | ||
| mesh2d | ||
| render | ||
| bundle.rs | ||
| collide_aabb.rs | ||
| dynamic_texture_atlas_builder.rs | ||
| lib.rs | ||
| rect.rs | ||
| sprite.rs | ||
| texture_atlas.rs | ||
| texture_atlas_builder.rs | ||