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, 20 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/borrowck-assign-to-andmut-in-aliasable-loc.rs b/src/test/ui/borrowck/borrowck-assign-to-andmut-in-aliasable-loc.rs
new file mode 100644
index 000000000..879c03791
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-assign-to-andmut-in-aliasable-loc.rs
@@ -0,0 +1,20 @@
+// Test that assignments to an `&mut` pointer which is found in a
+// borrowed (but otherwise non-aliasable) location is illegal.
+
+struct S<'a> {
+    pointer: &'a mut isize
+}
+
+fn a(s: &S) {
+    *s.pointer += 1; //~ ERROR cannot assign
+}
+
+fn b(s: &mut S) {
+    *s.pointer += 1;
+}
+
+fn c(s: & &mut S) {
+    *s.pointer += 1; //~ ERROR cannot assign
+}
+
+fn main() {}