1 files changed, 99 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-reborrow-from-mut.rs b/src/test/ui/borrowck/borrowck-reborrow-from-mut.rs
new file mode 100644
index 000000000..eef83c5ac
--- /dev/null
+++ b/src/test/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) { }