From e71ee500d1d9f63b2de99daed7b83165d0fc921b Mon Sep 17 00:00:00 2001
From: apekros <bayleyfoster@gmail.com>
Date: Fri, 29 Sep 2023 11:02:17 +1000
Subject: [PATCH] Add test for rust-lang#114912

---
 ...ebug-ice-attempted-to-add-with-overflow.rs | 10 ++++++++
 ...-ice-attempted-to-add-with-overflow.stderr | 23 +++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.rs
 create mode 100644 tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.stderr

diff --git a/tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.rs b/tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.rs
new file mode 100644
index 0000000000000..ced4434a7a7cf
--- /dev/null
+++ b/tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.rs
@@ -0,0 +1,10 @@
+// check-fail
+// edition:2021
+
+// test for issue-114912 - debug ice: attempted to add with overflow
+
+async fn main() {
+    //~^ ERROR `main` function is not allowed to be `async`
+    [0usize; 0xffff_ffff_ffff_ffff].await;
+    //~^ ERROR `[usize; usize::MAX]` is not a future
+}
diff --git a/tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.stderr b/tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.stderr
new file mode 100644
index 0000000000000..8c9d06c79ca42
--- /dev/null
+++ b/tests/ui/async-await/debug-ice-attempted-to-add-with-overflow.stderr
@@ -0,0 +1,23 @@
+error[E0277]: `[usize; usize::MAX]` is not a future
+  --> $DIR/debug-ice-attempted-to-add-with-overflow.rs:8:37
+   |
+LL |     [0usize; 0xffff_ffff_ffff_ffff].await;
+   |                                    -^^^^^
+   |                                    ||
+   |                                    |`[usize; usize::MAX]` is not a future
+   |                                    help: remove the `.await`
+   |
+   = help: the trait `Future` is not implemented for `[usize; usize::MAX]`
+   = note: [usize; usize::MAX] must be a future or must implement `IntoFuture` to be awaited
+   = note: required for `[usize; usize::MAX]` to implement `IntoFuture`
+
+error[E0752]: `main` function is not allowed to be `async`
+  --> $DIR/debug-ice-attempted-to-add-with-overflow.rs:6:1
+   |
+LL | async fn main() {
+   | ^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0277, E0752.
+For more information about an error, try `rustc --explain E0277`.