Comments (4)
I've managed to make a deterministic reproducer for it. The world originally contains {Position, Size, Rotation, Renderable, SpawnPoint, LevelData, RBPosition, RBSize, RBRotation}
components, (where RBRotation
is a typedef for RollbackBuffer<Rotation, { ROLLBACK_SIZE }>
and so on), then a CommandBuffer
is made to save only the RBRotation
components, and a fresh world containing no RollbackBuffer
s is deserialized, and that CommandBuffer
is run on it, which results in the crash.
Repository containing data for the reproduction: https://github.com/aweinstock314/hecs_issue310_reproducer
Stack trace: stacktrace_20230403.txt
from hecs.
As of aweinstock314/hecs_issue310_reproducer@2200827, I've pruned the components in both serialized worlds: the "pre" world now only contains RBRotation
s and the "post" world now only contains entity ids, no components.
from hecs.
I've gotten it to crash with no deserialization (a handcrafted world with 2 entities with a single ZST component) and the same stack trace:
#[test]
fn attempt2() {
let mut world = hecs::World::new();
#[derive(Clone)]
struct A;
let _a = world.spawn((A,));
let _b = world.spawn((A,));
let mut cmd = hecs::CommandBuffer::new();
for (entity, (data,)) in world.query_mut::<(&A,)>() {
cmd.insert(entity, (data.clone(),));
}
let mut world = hecs::World::new();
let _a = world.spawn(());
cmd.run_on(&mut world);
}
from hecs.
Fix published in 0.10.2.
from hecs.
Related Issues (20)
- Panic when borrowing different components of the same type from different entities HOT 5
- Closure component HOT 1
- Column serialize all serializable components HOT 6
- Cloning World? HOT 1
- Adding a World ID to `Entity` HOT 2
- World::query_one(_mut) is unsound HOT 2
- problem with macro 'Bundle' HOT 1
- Appreciation Thread
- CommandBuffer insert/remove ordering is a footgun
- can't derive Query HOT 1
- Better understanding or maybe Documentation? HOT 6
- Implementation of `Ord` on `Entity` HOT 2
- Dynamic scene spawning HOT 1
- [Question] State Machines and Animation, or Complex Components HOT 1
- [Question] Is the `index` field in the Archetype struct redundant? HOT 5
- [Question/Clarification] Are bundles suppose to be able to be used as queries? HOT 2
- Ability to create a query view directly from `World` HOT 5
- Component cloning HOT 4
- Determinism through serialization cycle HOT 10
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