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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/impl-trait/auto-trait-leak2.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/impl-trait/auto-trait-leak2.rs')
-rw-r--r-- | tests/ui/impl-trait/auto-trait-leak2.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/auto-trait-leak2.rs b/tests/ui/impl-trait/auto-trait-leak2.rs new file mode 100644 index 000000000..09450089a --- /dev/null +++ b/tests/ui/impl-trait/auto-trait-leak2.rs @@ -0,0 +1,39 @@ +use std::cell::Cell; +use std::rc::Rc; + +// Fast path, main can see the concrete type returned. +fn before() -> impl Fn(i32) { +//~^ NOTE within this `impl Fn +//~| NOTE within the type `impl Fn +//~| NOTE expansion of desugaring + let p = Rc::new(Cell::new(0)); + move |x| p.set(x) //~ NOTE used within this closure +} + +fn send<T: Send>(_: T) {} +//~^ NOTE required by a bound +//~| NOTE required by a bound +//~| NOTE required by this bound +//~| NOTE required by this bound + +fn main() { + send(before()); + //~^ ERROR `Rc<Cell<i32>>` cannot be sent between threads safely + //~| NOTE `Rc<Cell<i32>>` cannot be sent between threads safely + //~| NOTE required by a bound + + send(after()); + //~^ ERROR `Rc<Cell<i32>>` cannot be sent between threads safely + //~| NOTE `Rc<Cell<i32>>` cannot be sent between threads safely + //~| NOTE required by a bound +} + +// Deferred path, main has to wait until typeck finishes, +// to check if the return type of after is Send. +fn after() -> impl Fn(i32) { +//~^ NOTE within this `impl Fn(i32)` +//~| NOTE in this expansion +//~| NOTE appears within the type + let p = Rc::new(Cell::new(0)); + move |x| p.set(x) //~ NOTE used within this closure +} |