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Add mutual exclusion safety info on filter_fetch #9836

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Sep 19, 2023
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Add mutual exclusion safety info on filter_fetch #9836

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3 changes: 3 additions & 0 deletions crates/bevy_ecs/src/query/fetch.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -410,6 +410,9 @@ pub unsafe trait WorldQuery {
///
/// Must always be called _after_ [`WorldQuery::set_table`] or [`WorldQuery::set_archetype`]. `entity` and
/// `table_row` must be in the range of the current table and archetype.
///
/// If this includes any mutable access, then this should never be called
/// while the return value of [`WorldQuery::fetch`] for the same entity is live.
#[allow(unused_variables)]
#[inline(always)]
unsafe fn filter_fetch(
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