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, 35 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/borrowck-anon-fields-tuple.rs b/src/test/ui/borrowck/borrowck-anon-fields-tuple.rs
new file mode 100644
index 000000000..de2a8d832
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-anon-fields-tuple.rs
@@ -0,0 +1,35 @@
+// Tests that we are able to distinguish when loans borrow different
+// anonymous fields of a tuple vs the same anonymous field.
+
+fn distinct_variant() {
+    let mut y = (1, 2);
+
+    let a = match y {
+        (ref mut a, _) => a
+    };
+
+    let b = match y {
+        (_, ref mut b) => b
+    };
+
+    *a += 1;
+    *b += 1;
+}
+
+fn same_variant() {
+    let mut y = (1, 2);
+
+    let a = match y {
+        (ref mut a, _) => a
+    };
+
+    let b = match y {
+        (ref mut b, _) => b //~ ERROR cannot borrow
+    };
+
+    *a += 1;
+    *b += 1;
+}
+
+fn main() {
+}