Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 42 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/borrowck-unboxed-closures.stderr b/src/test/ui/borrowck/borrowck-unboxed-closures.stderr
new file mode 100644
index 000000000..d46ef126d
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-unboxed-closures.stderr
@@ -0,0 +1,42 @@
+error[E0502]: cannot borrow `f` as immutable because it is also borrowed as mutable
+  --> $DIR/borrowck-unboxed-closures.rs:3:5
+   |
+LL |     let g = &mut f;
+   |             ------ mutable borrow occurs here
+LL |     f(1, 2);
+   |     ^ immutable borrow occurs here
+LL |     use_mut(g);
+   |             - mutable borrow later used here
+
+error[E0596]: cannot borrow `f` as mutable, as it is not declared as mutable
+  --> $DIR/borrowck-unboxed-closures.rs:7:5
+   |
+LL | fn b<F:FnMut(isize, isize) -> isize>(f: F) {
+   |                                      - help: consider changing this to be mutable: `mut f`
+LL |     f(1, 2);
+   |     ^ cannot borrow as mutable
+
+error[E0382]: use of moved value: `f`
+  --> $DIR/borrowck-unboxed-closures.rs:12:5
+   |
+LL | fn c<F:FnOnce(isize, isize) -> isize>(f: F) {
+   |                                       - move occurs because `f` has type `F`, which does not implement the `Copy` trait
+LL |     f(1, 2);
+   |     ------- `f` moved due to this call
+LL |     f(1, 2);
+   |     ^ value used here after move
+   |
+note: this value implements `FnOnce`, which causes it to be moved when called
+  --> $DIR/borrowck-unboxed-closures.rs:11:5
+   |
+LL |     f(1, 2);
+   |     ^
+help: consider further restricting this bound
+   |
+LL | fn c<F:FnOnce(isize, isize) -> isize + Copy>(f: F) {
+   |                                      ++++++
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0382, E0502, E0596.
+For more information about an error, try `rustc --explain E0382`.