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-rw-r--r--src/test/ui/async-await/in-trait/async-recursive.rs21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/async-await/in-trait/async-recursive.rs b/src/test/ui/async-await/in-trait/async-recursive.rs
new file mode 100644
index 000000000..61119f809
--- /dev/null
+++ b/src/test/ui/async-await/in-trait/async-recursive.rs
@@ -0,0 +1,21 @@
+// edition: 2021
+
+#![feature(async_fn_in_trait)]
+#![allow(incomplete_features)]
+
+trait MyTrait {
+ async fn foo_recursive(&self, n: usize) -> i32;
+}
+
+impl MyTrait for i32 {
+ async fn foo_recursive(&self, n: usize) -> i32 {
+ //~^ ERROR recursion in an `async fn` requires boxing
+ if n > 0 {
+ self.foo_recursive(n - 1).await
+ } else {
+ *self
+ }
+ }
+}
+
+fn main() {}