2 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/consts/async-block.rs b/src/test/ui/consts/async-block.rs
new file mode 100644
index 00000000000..1fa2a616091
--- /dev/null
+++ b/src/test/ui/consts/async-block.rs
@@ -0,0 +1,8 @@
+// From <https://github.com/rust-lang/rust/issues/77361>
+
+// edition:2018
+
+const _: i32 = { core::mem::ManuallyDrop::new(async { 0 }); 4 };
+//~^ `async` block
+
+fn main() {}
diff --git a/src/test/ui/consts/async-block.stderr b/src/test/ui/consts/async-block.stderr
new file mode 100644
index 00000000000..99f470623ac
--- /dev/null
+++ b/src/test/ui/consts/async-block.stderr
@@ -0,0 +1,8 @@
+error: `async` blocks are not allowed in constants
+  --> $DIR/async-block.rs:5:47
+   |
+LL | const _: i32 = { core::mem::ManuallyDrop::new(async { 0 }); 4 };
+   |                                               ^^^^^^^^^^^
+
+error: aborting due to previous error
+