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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/impl-trait/auto-trait-leak2.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/impl-trait/auto-trait-leak2.rs')
-rw-r--r-- | src/test/ui/impl-trait/auto-trait-leak2.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/auto-trait-leak2.rs b/src/test/ui/impl-trait/auto-trait-leak2.rs new file mode 100644 index 000000000..09450089a --- /dev/null +++ b/src/test/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 +} |