BugFix: thread 'main' panicked at 'index out of bounds:

[Git0Shuai]

Invoke archetype.grow() while archetype.capacity() != archetype.len() will resize entities and data with different sizes.

so, the this program.

use bevy::prelude::*;

fn main() {
    let mut world = World::new();
    for _ in 0..100 {
        world.spawn(("abc".to_string(),));
    }
    world.reserve::<(String,)>(100);
    for _ in 0..100 {
        world.spawn(("abc".to_string(),));
    }
}

panicked:

thread 'main' panicked at 'index out of bounds: the len is 172 but the index is 172', crates\bevy_ecs\src\core\archetype.rs:418:9
stack backtrace:
   0: std::panicking::begin_panic_handler
             at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673\/library\std\src\panicking.rs:493
   1: core::panicking::panic_fmt
             at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673\/library\core\src\panicking.rs:92
   2: core::panicking::panic_bounds_check
             at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673\/library\core\src\panicking.rs:69
   3: core::slice::index::{{impl}}::index_mut<bevy_ecs::core::archetype::ComponentFlags>
             at C:\Users\..\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\slice\index.rs:188
   4: core::slice::index::{{impl}}::index_mut<bevy_ecs::core::archetype::ComponentFlags,usize>
             at C:\Users\..\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\slice\index.rs:26
   5: alloc::vec::{{impl}}::index_mut<bevy_ecs::core::archetype::ComponentFlags,usize,alloc::alloc::Global>
             at C:\Users\..\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\alloc\src\vec.rs:2173
   6: bevy_ecs::core::archetype::Archetype::put_dynamic
             at F:\bevy\crates\bevy_ecs\src\core\archetype.rs:418
   7: bevy_ecs::core::world::{{impl}}::spawn::{{closure}}<tuple<alloc::string::String>>
             at F:\bevy\crates\bevy_ecs\src\core\world.rs:99
   8: bevy_ecs::core::bundle::{{impl}}::put<alloc::string::String,closure-1>
             at F:\bevy\crates\bevy_ecs\src\core\bundle.rs:99
   9: bevy_ecs::core::world::World::spawn<tuple<alloc::string::String>>
             at F:\bevy\crates\bevy_ecs\src\core\world.rs:98
  10: game::main
             at .\src\main.rs:10
  11: core::ops::function::FnOnce::call_once<fn(),tuple<>>
             at C:\Users\..\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\ops\function.rs:227
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

this PR fixed this bug.

[cart]

Ooh very nice catch. Thanks!