From 857453d36c5b396d2009e08b38b672695c5cddba Mon Sep 17 00:00:00 2001
From: Chase Wilson <me@chasewilson.dev>
Date: Sat, 4 Jun 2022 13:33:56 -0500
Subject: [PATCH] Added test for #97732

---
 src/test/ui/unsized/issue-97732.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/test/ui/unsized/issue-97732.rs

diff --git a/src/test/ui/unsized/issue-97732.rs b/src/test/ui/unsized/issue-97732.rs
new file mode 100644
index 0000000000000..172f0724d4263
--- /dev/null
+++ b/src/test/ui/unsized/issue-97732.rs
@@ -0,0 +1,23 @@
+// check-pass
+
+#![feature(coerce_unsized)]
+
+// Ensure that unsizing structs that contain ZSTs at non-zero offsets don't ICE
+
+use std::ops::CoerceUnsized;
+
+#[repr(C)]
+pub struct BoxWithZstTail<T: ?Sized>(Box<T>, ());
+
+impl<S: ?Sized, T: ?Sized> CoerceUnsized<BoxWithZstTail<T>> for BoxWithZstTail<S> where
+    Box<S>: CoerceUnsized<Box<T>>
+{
+}
+
+pub fn noop_dyn_upcast_with_zst_tail(
+    b: BoxWithZstTail<dyn Send + Sync>,
+) -> BoxWithZstTail<dyn Send> {
+    b
+}
+
+fn main() {}