From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/borrowck/borrowck-reborrow-from-mut.rs | 99 +++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 tests/ui/borrowck/borrowck-reborrow-from-mut.rs

(limited to 'tests/ui/borrowck/borrowck-reborrow-from-mut.rs')

diff --git a/tests/ui/borrowck/borrowck-reborrow-from-mut.rs b/tests/ui/borrowck/borrowck-reborrow-from-mut.rs
new file mode 100644
index 000000000..eef83c5ac
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-reborrow-from-mut.rs
@@ -0,0 +1,99 @@
+struct Foo {
+  bar1: Bar,
+  bar2: Bar
+}
+
+struct Bar {
+  int1: isize,
+  int2: isize,
+}
+
+fn borrow_same_field_twice_mut_mut(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1;
+    let _bar2 = &mut foo.bar1;  //~ ERROR cannot borrow
+    use_mut(_bar1);
+}
+fn borrow_same_field_twice_mut_imm(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1;
+    let _bar2 = &foo.bar1;  //~ ERROR cannot borrow
+    use_mut(_bar1);
+}
+fn borrow_same_field_twice_imm_mut(foo: &mut Foo) {
+    let _bar1 = &foo.bar1;
+    let _bar2 = &mut foo.bar1;  //~ ERROR cannot borrow
+    use_imm(_bar1);
+}
+fn borrow_same_field_twice_imm_imm(foo: &mut Foo) {
+    let _bar1 = &foo.bar1;
+    let _bar2 = &foo.bar1;
+    use_imm(_bar1);
+}
+fn borrow_both_mut(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1;
+    let _bar2 = &mut foo.bar2;
+    use_mut(_bar1);
+}
+fn borrow_both_mut_pattern(foo: &mut Foo) {
+    match *foo {
+        Foo { bar1: ref mut _bar1, bar2: ref mut _bar2 } =>
+        { use_mut(_bar1); use_mut(_bar2); }
+    }
+}
+fn borrow_var_and_pattern(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1;
+    match *foo {
+        Foo { bar1: ref mut _bar1, bar2: _ } => {}
+        //~^ ERROR cannot borrow
+    }
+    use_mut(_bar1);
+}
+fn borrow_mut_and_base_imm(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1.int1;
+    let _foo1 = &foo.bar1; //~ ERROR cannot borrow
+    let _foo2 = &*foo; //~ ERROR cannot borrow
+    use_mut(_bar1);
+}
+fn borrow_mut_and_base_mut(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1.int1;
+    let _foo1 = &mut foo.bar1; //~ ERROR cannot borrow
+    use_mut(_bar1);
+}
+fn borrow_mut_and_base_mut2(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1.int1;
+    let _foo2 = &mut *foo; //~ ERROR cannot borrow
+    use_mut(_bar1);
+}
+fn borrow_imm_and_base_mut(foo: &mut Foo) {
+    let _bar1 = &foo.bar1.int1;
+    let _foo1 = &mut foo.bar1; //~ ERROR cannot borrow
+    use_imm(_bar1);
+}
+fn borrow_imm_and_base_mut2(foo: &mut Foo) {
+    let _bar1 = &foo.bar1.int1;
+    let _foo2 = &mut *foo; //~ ERROR cannot borrow
+    use_imm(_bar1);
+}
+fn borrow_imm_and_base_imm(foo: &mut Foo) {
+    let _bar1 = &foo.bar1.int1;
+    let _foo1 = &foo.bar1;
+    let _foo2 = &*foo;
+    use_imm(_bar1);
+}
+fn borrow_mut_and_imm(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1;
+    let _foo1 = &foo.bar2;
+    use_mut(_bar1);
+}
+fn borrow_mut_from_imm(foo: &Foo) {
+    let _bar1 = &mut foo.bar1; //~ ERROR cannot borrow
+}
+
+fn borrow_long_path_both_mut(foo: &mut Foo) {
+    let _bar1 = &mut foo.bar1.int1;
+    let _foo1 = &mut foo.bar2.int2;
+    use_mut(_bar1);
+}
+fn main() {}
+
+fn use_mut<T>(_: &mut T) { }
+fn use_imm<T>(_: &T) { }
-- 
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