Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1

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

1 files changed, 34 insertions, 0 deletions

diff --git a/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr b/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr
new file mode 100644
index 000000000..ce9f7aa05
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-borrow-mut-base-ptr-in-aliasable-loc.stderr
@@ -0,0 +1,34 @@
+error[E0594]: cannot assign to `**t1`, which is behind a `&` reference
+  --> $DIR/borrowck-borrow-mut-base-ptr-in-aliasable-loc.rs:9:5
+   |
+LL |     let t1 = t0;
+   |         -- consider changing this binding's type to be: `&mut &mut isize`
+LL |     let p: &isize = &**t0;
+LL |     **t1 = 22;
+   |     ^^^^^^^^^ `t1` is a `&` reference, so the data it refers to cannot be written
+
+error[E0502]: cannot borrow `**t0` as immutable because it is also borrowed as mutable
+  --> $DIR/borrowck-borrow-mut-base-ptr-in-aliasable-loc.rs:14:21
+   |
+LL |     let t1 = &mut *t0;
+   |              -------- mutable borrow occurs here
+LL |     let p: &isize = &**t0;
+   |                     ^^^^^ immutable borrow occurs here
+LL |     **t1 = 22;
+   |     --------- mutable borrow later used here
+
+error[E0596]: cannot borrow `**t0` as mutable, as it is behind a `&` reference
+  --> $DIR/borrowck-borrow-mut-base-ptr-in-aliasable-loc.rs:19:26
+   |
+LL |     let x:  &mut isize = &mut **t0;
+   |                          ^^^^^^^^^ `t0` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |
+help: consider changing this to be a mutable reference
+   |
+LL | fn foo4(t0: &mut &mut isize) {
+   |             ~~~~~~~~~~~~~~~
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0502, E0594, E0596.
+For more information about an error, try `rustc --explain E0502`.