1 files changed, 104 insertions, 0 deletions
diff --git a/tests/debuginfo/mutable-locs.rs b/tests/debuginfo/mutable-locs.rs
new file mode 100644
index 00000000000..688483e43e4
--- /dev/null
+++ b/tests/debuginfo/mutable-locs.rs
@@ -0,0 +1,104 @@
+// Testing the display of Cell, RefCell, and RefMut in cdb.
+
+// cdb-only
+// min-cdb-version: 10.0.18317.1001
+// compile-flags:-g
+
+// === CDB TESTS ==================================================================================
+
+// cdb-command: g
+
+// cdb-command:dx static_c,d
+// cdb-check:static_c,d       : 10 [Type: core::cell::Cell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::Cell<i32>]
+
+// cdb-command: dx static_c.value,d
+// cdb-check:static_c.value,d : 10 [Type: core::cell::UnsafeCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::UnsafeCell<i32>]
+
+// cdb-command:  dx dynamic_c,d
+// cdb-check:dynamic_c,d      : 15 [Type: core::cell::RefCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefCell<i32>]
+// cdb-check:    [Borrow state]   : Unborrowed
+
+// cdb-command: dx dynamic_c.value,d
+// cdb-check:dynamic_c.value,d : 15 [Type: core::cell::UnsafeCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::UnsafeCell<i32>]
+
+// cdb-command: dx b,d
+// cdb-check:b,d              : 42 [Type: core::cell::RefMut<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefMut<i32>]
+// cdb-check:    42 [Type: int]
+
+// cdb-command: g
+
+// cdb-command: dx dynamic_c,d
+// cdb-check:dynamic_c,d      : 15 [Type: core::cell::RefCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefCell<i32>]
+// cdb-check:    [Borrow state]   : Immutably borrowed
+
+// cdb-command: dx r_borrow,d
+// cdb-check:r_borrow,d       : 15 [Type: core::cell::Ref<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::Ref<i32>]
+// cdb-check:    15 [Type: int]
+
+// cdb-command: g
+
+// cdb-command: dx dynamic_c,d
+// cdb-check:dynamic_c,d      : 15 [Type: core::cell::RefCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefCell<i32>]
+// cdb-check:    [Borrow state]   : Unborrowed
+
+// cdb-command: g
+
+// cdb-command: dx dynamic_c,d
+// cdb-check:dynamic_c,d      : 15 [Type: core::cell::RefCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefCell<i32>]
+// cdb-check:    [Borrow state]   : Mutably borrowed
+
+// cdb-command: dx r_borrow_mut,d
+// cdb-check:r_borrow_mut,d   : 15 [Type: core::cell::RefMut<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefMut<i32>]
+// cdb-check:    15 [Type: int]
+
+// cdb-command: g
+
+// cdb-command: dx dynamic_c,d
+// cdb-check:dynamic_c,d      : 15 [Type: core::cell::RefCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::RefCell<i32>]
+// cdb-check:    [Borrow state]   : Unborrowed
+
+#![allow(unused_variables)]
+
+use std::cell::{Cell, RefCell};
+
+fn main() {
+    let static_c = Cell::new(5);
+    static_c.set(10);
+
+    let dynamic_c = RefCell::new(5);
+    dynamic_c.replace(15);
+
+    let dynamic_c_0 = RefCell::new(15);
+    let mut b = dynamic_c_0.borrow_mut();
+    *b = 42;
+
+    zzz(); // #break
+
+    // Check that `RefCell`'s borrow state visualizes correctly
+    {
+        let r_borrow = dynamic_c.borrow();
+        zzz(); // #break
+    }
+
+    zzz(); // #break
+
+    {
+        let r_borrow_mut = dynamic_c.borrow_mut();
+        zzz(); // #break
+    }
+
+    zzz(); // #break
+}
+
+fn zzz() {()}