Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1

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

1 files changed, 86 insertions, 0 deletions

diff --git a/tests/ui/borrowck/borrowck-use-mut-borrow.rs b/tests/ui/borrowck/borrowck-use-mut-borrow.rs
new file mode 100644
index 000000000..94f88395f
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-use-mut-borrow.rs
@@ -0,0 +1,86 @@
+#[derive(Copy, Clone)]
+struct A { a: isize, b: isize }
+
+struct B { a: isize, b: Box<isize> }
+
+
+
+fn var_copy_after_var_borrow() {
+    let mut x: isize = 1;
+    let p = &mut x;
+    drop(x); //~ ERROR cannot use `x` because it was mutably borrowed
+    *p = 2;
+}
+
+fn var_copy_after_field_borrow() {
+    let mut x = A { a: 1, b: 2 };
+    let p = &mut x.a;
+    drop(x); //~ ERROR cannot use `x` because it was mutably borrowed
+    *p = 3;
+}
+
+fn field_copy_after_var_borrow() {
+    let mut x = A { a: 1, b: 2 };
+    let p = &mut x;
+    drop(x.a); //~ ERROR cannot use `x.a` because it was mutably borrowed
+    p.a = 3;
+}
+
+fn field_copy_after_field_borrow() {
+    let mut x = A { a: 1, b: 2 };
+    let p = &mut x.a;
+    drop(x.a); //~ ERROR cannot use `x.a` because it was mutably borrowed
+    *p = 3;
+}
+
+fn fu_field_copy_after_var_borrow() {
+    let mut x = A { a: 1, b: 2 };
+    let p = &mut x;
+    let y = A { b: 3, .. x }; //~ ERROR cannot use `x.a` because it was mutably borrowed
+    drop(y);
+    p.a = 4;
+}
+
+fn fu_field_copy_after_field_borrow() {
+    let mut x = A { a: 1, b: 2 };
+    let p = &mut x.a;
+    let y = A { b: 3, .. x }; //~ ERROR cannot use `x.a` because it was mutably borrowed
+    drop(y);
+    *p = 4;
+}
+
+fn var_deref_after_var_borrow() {
+    let mut x: Box<isize> = Box::new(1);
+    let p = &mut x;
+    drop(*x); //~ ERROR cannot use `*x` because it was mutably borrowed
+    **p = 2;
+}
+
+fn field_deref_after_var_borrow() {
+    let mut x = B { a: 1, b: Box::new(2) };
+    let p = &mut x;
+    drop(*x.b); //~ ERROR cannot use `*x.b` because it was mutably borrowed
+    p.a = 3;
+}
+
+fn field_deref_after_field_borrow() {
+    let mut x = B { a: 1, b: Box::new(2) };
+    let p = &mut x.b;
+    drop(*x.b); //~ ERROR cannot use `*x.b` because it was mutably borrowed
+    **p = 3;
+}
+
+fn main() {
+    var_copy_after_var_borrow();
+    var_copy_after_field_borrow();
+
+    field_copy_after_var_borrow();
+    field_copy_after_field_borrow();
+
+    fu_field_copy_after_var_borrow();
+    fu_field_copy_after_field_borrow();
+
+    var_deref_after_var_borrow();
+    field_deref_after_var_borrow();
+    field_deref_after_field_borrow();
+}