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, 22 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/mut-borrow-outside-loop.rs b/src/test/ui/borrowck/mut-borrow-outside-loop.rs
new file mode 100644
index 000000000..c02bfbf87
--- /dev/null
+++ b/src/test/ui/borrowck/mut-borrow-outside-loop.rs
@@ -0,0 +1,22 @@
+// ensure borrowck messages are correct outside special case
+#![feature(rustc_attrs)]
+fn main() { #![rustc_error] // rust-lang/rust#49855
+    let mut void = ();
+
+    let first = &mut void;
+    let second = &mut void; //~ ERROR cannot borrow
+    first.use_mut();
+    second.use_mut();
+
+    loop {
+        let mut inner_void = ();
+
+        let inner_first = &mut inner_void;
+        let inner_second = &mut inner_void; //~ ERROR cannot borrow
+        inner_second.use_mut();
+        inner_first.use_mut();
+    }
+}
+
+trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { }  }
+impl<T> Fake for T { }