diff options
Diffstat (limited to 'src/test/ui/generator/yield-while-local-borrowed.rs')
-rw-r--r-- | src/test/ui/generator/yield-while-local-borrowed.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/test/ui/generator/yield-while-local-borrowed.rs b/src/test/ui/generator/yield-while-local-borrowed.rs new file mode 100644 index 000000000..061a64dbc --- /dev/null +++ b/src/test/ui/generator/yield-while-local-borrowed.rs @@ -0,0 +1,49 @@ +#![feature(generators, generator_trait)] + +use std::ops::{GeneratorState, Generator}; +use std::cell::Cell; +use std::pin::Pin; + +fn borrow_local_inline() { + // Not OK to yield with a borrow of a temporary. + // + // (This error occurs because the region shows up in the type of + // `b` and gets extended by region inference.) + let mut b = move || { + let a = &mut 3; + //~^ ERROR borrow may still be in use when generator yields + yield(); + println!("{}", a); + }; + Pin::new(&mut b).resume(()); +} + +fn borrow_local_inline_done() { + // No error here -- `a` is not in scope at the point of `yield`. + let mut b = move || { + { + let a = &mut 3; + } + yield(); + }; + Pin::new(&mut b).resume(()); +} + +fn borrow_local() { + // Not OK to yield with a borrow of a temporary. + // + // (This error occurs because the region shows up in the type of + // `b` and gets extended by region inference.) + let mut b = move || { + let a = 3; + { + let b = &a; + //~^ ERROR borrow may still be in use when generator yields + yield(); + println!("{}", b); + } + }; + Pin::new(&mut b).resume(()); +} + +fn main() { } |