diff options
Diffstat (limited to 'src/test/ui/closures/2229_closure_analysis/filter-on-struct-member.rs')
-rw-r--r-- | src/test/ui/closures/2229_closure_analysis/filter-on-struct-member.rs | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/ui/closures/2229_closure_analysis/filter-on-struct-member.rs b/src/test/ui/closures/2229_closure_analysis/filter-on-struct-member.rs new file mode 100644 index 000000000..bfa3ebcd6 --- /dev/null +++ b/src/test/ui/closures/2229_closure_analysis/filter-on-struct-member.rs @@ -0,0 +1,41 @@ +// edition:2021 + +#![feature(rustc_attrs)] + +struct Filter { + div: i32, +} +impl Filter { + fn allowed(&self, x: i32) -> bool { + x % self.div == 1 + } +} + +struct Data { + filter: Filter, + list: Vec<i32>, +} +impl Data { + fn update(&mut self) { + // The closure passed to filter only captures self.filter, + // therefore mutating self.list is allowed. + self.list.retain( + #[rustc_capture_analysis] + |v| self.filter.allowed(*v), + //~^ ERROR: First Pass analysis includes: + //~| ERROR: Min Capture analysis includes: + //~| NOTE: Capturing self[Deref,(0, 0)] -> ImmBorrow + //~| NOTE: Min Capture self[Deref,(0, 0)] -> ImmBorrow + ); + } +} + +fn main() { + let mut d = Data { filter: Filter { div: 3 }, list: Vec::new() }; + + for i in 1..10 { + d.list.push(i); + } + + d.update(); +} |