Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 50 insertions, 0 deletions

diff --git a/tests/ui/borrowck/borrowck-access-permissions.rs b/tests/ui/borrowck/borrowck-access-permissions.rs
new file mode 100644
index 000000000..469ad508b
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-access-permissions.rs
@@ -0,0 +1,50 @@
+static static_x : i32 = 1;
+static mut static_x_mut : i32 = 1;
+
+fn main() {
+    let x = 1;
+    let mut x_mut = 1;
+
+    { // borrow of local
+        let _y1 = &mut x; //~ ERROR [E0596]
+        let _y2 = &mut x_mut; // No error
+    }
+
+    { // borrow of static
+        let _y1 = &mut static_x; //~ ERROR [E0596]
+        unsafe { let _y2 = &mut static_x_mut; } // No error
+    }
+
+    { // borrow of deref to box
+        let box_x = Box::new(1);
+        let mut box_x_mut = Box::new(1);
+
+        let _y1 = &mut *box_x; //~ ERROR [E0596]
+        let _y2 = &mut *box_x_mut; // No error
+    }
+
+    { // borrow of deref to reference
+        let ref_x = &x;
+        let ref_x_mut = &mut x_mut;
+
+        let _y1 = &mut *ref_x; //~ ERROR [E0596]
+        let _y2 = &mut *ref_x_mut; // No error
+    }
+
+    { // borrow of deref to pointer
+        let ptr_x : *const _ = &x;
+        let ptr_mut_x : *mut _ = &mut x_mut;
+
+        unsafe {
+            let _y1 = &mut *ptr_x; //~ ERROR [E0596]
+            let _y2 = &mut *ptr_mut_x; // No error
+        }
+    }
+
+    { // borrowing mutably through an immutable reference
+        struct Foo<'a> { f: &'a mut i32, g: &'a i32 };
+        let mut foo = Foo { f: &mut x_mut, g: &x };
+        let foo_ref = &foo;
+        let _y = &mut *foo_ref.f; //~ ERROR [E0596]
+    }
+}