From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/transmute/transmute-fat-pointers.rs | 33 +++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 src/test/ui/transmute/transmute-fat-pointers.rs

(limited to 'src/test/ui/transmute/transmute-fat-pointers.rs')

diff --git a/src/test/ui/transmute/transmute-fat-pointers.rs b/src/test/ui/transmute/transmute-fat-pointers.rs
new file mode 100644
index 000000000..7c1beffd1
--- /dev/null
+++ b/src/test/ui/transmute/transmute-fat-pointers.rs
@@ -0,0 +1,33 @@
+// normalize-stderr-test "\d+ bits" -> "N bits"
+
+// Tests that are conservative around thin/fat pointer mismatches.
+
+#![allow(dead_code)]
+
+use std::mem::transmute;
+
+fn a<T, U: ?Sized>(x: &[T]) -> &U {
+    unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes
+}
+
+fn b<T: ?Sized, U: ?Sized>(x: &T) -> &U {
+    unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes
+}
+
+fn c<T, U>(x: &T) -> &U {
+    unsafe { transmute(x) }
+}
+
+fn d<T, U>(x: &[T]) -> &[U] {
+    unsafe { transmute(x) }
+}
+
+fn e<T: ?Sized, U>(x: &T) -> &U {
+    unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes
+}
+
+fn f<T, U: ?Sized>(x: &T) -> &U {
+    unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes
+}
+
+fn main() { }
-- 
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