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-rw-r--r--tests/ui/impl-trait/dyn-trait-elided-two-inputs-ref-param.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/dyn-trait-elided-two-inputs-ref-param.rs b/tests/ui/impl-trait/dyn-trait-elided-two-inputs-ref-param.rs
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index 000000000..8d34c1b6c
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+++ b/tests/ui/impl-trait/dyn-trait-elided-two-inputs-ref-param.rs
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+// Test that `impl Alpha<dyn Object>` resets the object-lifetime
+// default to `'static`.
+//
+// check-pass
+
+trait Alpha<Item: ?Sized> {
+ fn item(&self) -> Box<Item> {
+ panic!()
+ }
+}
+
+trait Object {}
+impl<T> Alpha<dyn Object> for T {}
+fn alpha(x: &str, y: &str) -> impl Alpha<dyn Object> { () }
+fn is_static<T>(_: T) where T: 'static { }
+
+fn bar(x: &str) -> &impl Alpha<dyn Object> { &() }
+
+fn main() {
+ let s = format!("foo");
+ let r = bar(&s);
+ is_static(r.item());
+}