From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/generator/yield-while-ref-reborrowed.rs | 40 ++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 tests/ui/generator/yield-while-ref-reborrowed.rs (limited to 'tests/ui/generator/yield-while-ref-reborrowed.rs') diff --git a/tests/ui/generator/yield-while-ref-reborrowed.rs b/tests/ui/generator/yield-while-ref-reborrowed.rs new file mode 100644 index 000000000..a03ef945d --- /dev/null +++ b/tests/ui/generator/yield-while-ref-reborrowed.rs @@ -0,0 +1,40 @@ +#![feature(generators, generator_trait)] + +use std::ops::{GeneratorState, Generator}; +use std::cell::Cell; +use std::pin::Pin; + +fn reborrow_shared_ref(x: &i32) { + // This is OK -- we have a borrow live over the yield, but it's of + // data that outlives the generator. + let mut b = move || { + let a = &*x; + yield(); + println!("{}", a); + }; + Pin::new(&mut b).resume(()); +} + +fn reborrow_mutable_ref(x: &mut i32) { + // This is OK -- we have a borrow live over the yield, but it's of + // data that outlives the generator. + let mut b = move || { + let a = &mut *x; + yield(); + println!("{}", a); + }; + Pin::new(&mut b).resume(()); +} + +fn reborrow_mutable_ref_2(x: &mut i32) { + // ...but not OK to go on using `x`. + let mut b = || { + let a = &mut *x; + yield(); + println!("{}", a); + }; + println!("{}", x); //~ ERROR + Pin::new(&mut b).resume(()); +} + +fn main() { } -- cgit v1.2.3