From a4b7ed7a42c716ab9f05e351f003d589124fd55d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:18:58 +0200
Subject: Adding upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../coercion/coerce-overloaded-autoderef-fail.rs   | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 tests/ui/coercion/coerce-overloaded-autoderef-fail.rs

(limited to 'tests/ui/coercion/coerce-overloaded-autoderef-fail.rs')

diff --git a/tests/ui/coercion/coerce-overloaded-autoderef-fail.rs b/tests/ui/coercion/coerce-overloaded-autoderef-fail.rs
new file mode 100644
index 000000000..01d9c1e48
--- /dev/null
+++ b/tests/ui/coercion/coerce-overloaded-autoderef-fail.rs
@@ -0,0 +1,32 @@
+fn borrow_mut<T>(x: &mut T) -> &mut T { x }
+fn borrow<T>(x: &T) -> &T { x }
+
+fn borrow_mut2<T>(_: &mut T, _: &mut T) {}
+fn borrow2<T>(_: &mut T, _: &T) {}
+
+fn double_mut_borrow<T>(x: &mut Box<T>) {
+    let y = borrow_mut(x);
+    let z = borrow_mut(x);
+    //~^ ERROR cannot borrow `*x` as mutable more than once at a time
+    drop((y, z));
+}
+
+fn double_imm_borrow(x: &mut Box<i32>) {
+    let y = borrow(x);
+    let z = borrow(x);
+    **x += 1;
+    //~^ ERROR cannot assign to `**x` because it is borrowed
+    drop((y, z));
+}
+
+fn double_mut_borrow2<T>(x: &mut Box<T>) {
+    borrow_mut2(x, x);
+    //~^ ERROR cannot borrow `*x` as mutable more than once at a time
+}
+
+fn double_borrow2<T>(x: &mut Box<T>) {
+    borrow2(x, x);
+    //~^ ERROR cannot borrow `*x` as mutable because it is also borrowed as immutable
+}
+
+pub fn main() {}
-- 
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