Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/ui/transmute/transmute-imut-to-mut.rs b/tests/ui/transmute/transmute-imut-to-mut.rs
new file mode 100644
index 000000000..9f3f76c1e
--- /dev/null
+++ b/tests/ui/transmute/transmute-imut-to-mut.rs
@@ -0,0 +1,8 @@
+// Tests that transmuting from &T to &mut T is Undefined Behavior.
+
+use std::mem::transmute;
+
+fn main() {
+    let _a: &mut u8 = unsafe { transmute(&1u8) };
+    //~^ ERROR transmuting &T to &mut T is undefined behavior, even if the reference is unused, consider instead using an UnsafeCell
+}