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-rw-r--r--tests/ui/regions/regions-infer-borrow-scope-addr-of.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/regions/regions-infer-borrow-scope-addr-of.rs b/tests/ui/regions/regions-infer-borrow-scope-addr-of.rs
new file mode 100644
index 000000000..5d8ad932e
--- /dev/null
+++ b/tests/ui/regions/regions-infer-borrow-scope-addr-of.rs
@@ -0,0 +1,23 @@
+// run-pass
+
+use std::mem::swap;
+
+pub fn main() {
+ let mut x = 4;
+
+ for i in 0_usize..3 {
+ // ensure that the borrow in this alt
+ // does not interfere with the swap
+ // below. note that it would it you
+ // naively borrowed &x for the lifetime
+ // of the variable x, as we once did
+ match i {
+ i => {
+ let y = &x;
+ assert!(i < *y);
+ }
+ }
+ let mut y = 4;
+ swap(&mut y, &mut x);
+ }
+}