executor: mark Spawner::for_current_executor() as unsafe.

It's unsound with manually-created Contexts, see https://github.com/embassy-rs/embassy/issues/4379

1 files changed, 2 insertions, 1 deletions

diff --git a/examples/nrf52840/src/bin/self_spawn_current_executor.rs b/examples/nrf52840/src/bin/self_spawn_current_executor.rs
index ec9569a64..ddb40dc53 100644
--- a/examples/nrf52840/src/bin/self_spawn_current_executor.rs
+++ b/examples/nrf52840/src/bin/self_spawn_current_executor.rs
@@ -10,7 +10,8 @@ use {defmt_rtt as _, panic_probe as _};
 async fn my_task(n: u32) {
     Timer::after_secs(1).await;
     info!("Spawning self! {}", n);
-    unwrap!(Spawner::for_current_executor().await.spawn(my_task(n + 1)));
+    let spawner = unsafe { Spawner::for_current_executor().await };
+    unwrap!(spawner.spawn(my_task(n + 1)));
 }
 
 #[embassy_executor::main]