1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/async-await/multiple-lifetimes/variance.rs b/src/test/ui/async-await/multiple-lifetimes/variance.rs
new file mode 100644
index 00000000000..b52ad17d563
--- /dev/null
+++ b/src/test/ui/async-await/multiple-lifetimes/variance.rs
@@ -0,0 +1,18 @@
+// edition:2018
+// run-pass
+
+// Test for async fn where the parameters have distinct lifetime
+// parameters that appear in all possible variances.
+
+#![feature(async_await)]
+
+#[allow(dead_code)]
+async fn lotsa_lifetimes<'a, 'b, 'c>(_: fn(&'a u8), _: fn(&'b u8) -> &'b u8, _: fn() -> &'c u8) { }
+
+fn take_any(_: &u8) { }
+fn identify(x: &u8) -> &u8 { x }
+fn give_back() -> &'static u8 { &22 }
+
+fn main() {
+    let _ = lotsa_lifetimes(take_any, identify, give_back);
+}