1 files changed, 39 insertions, 0 deletions
diff --git a/tests/debuginfo/mutex.rs b/tests/debuginfo/mutex.rs
new file mode 100644
index 000000000..61ec6a812
--- /dev/null
+++ b/tests/debuginfo/mutex.rs
@@ -0,0 +1,39 @@
+// Testing the display of Mutex and MutexGuard in cdb.
+
+// cdb-only
+// min-cdb-version: 10.0.21287.1005
+// compile-flags:-g
+
+// === CDB TESTS ==================================================================================
+//
+// cdb-command:g
+//
+// cdb-command:dx m,d
+// cdb-check:m,d              [Type: std::sync::mutex::Mutex<i32>]
+// cdb-check:    [...] inner            [Type: std::sys::windows::locks::mutex::Mutex]
+// cdb-check:    [...] poison           [Type: std::sync::poison::Flag]
+// cdb-check:    [...] data             : 0 [Type: core::cell::UnsafeCell<i32>]
+
+//
+// cdb-command:dx m.data,d
+// cdb-check:m.data,d         : 0 [Type: core::cell::UnsafeCell<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::cell::UnsafeCell<i32>]
+
+//
+// cdb-command:dx _lock,d
+// cdb-check:_lock,d          : Ok [Type: enum2$<core::result::Result<std::sync::mutex::MutexGuard<i32>,enum2$<std::sync::poison::TryLockError<std::sync::mutex::MutexGuard<i32> > > > >]
+// cdb-check:    [...] __0              [Type: std::sync::mutex::MutexGuard<i32>]
+
+use std::sync::Mutex;
+
+fn main() {
+    let m = Mutex::new(0);
+    let _lock = m.try_lock();
+
+    println!("this line avoids an `Ambiguous symbol error` while setting the breakpoint");
+
+    zzz(); // #break
+}
+
+#[inline(never)]
+fn zzz() {}