1 files changed, 58 insertions, 0 deletions
diff --git a/gcc/testsuite/rust/compile/issue-3032-1.rs b/gcc/testsuite/rust/compile/issue-3032-1.rs
new file mode 100644
index 0000000..e9eb027
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3032-1.rs
@@ -0,0 +1,58 @@
+#![feature(negative_impls)]
+
+#[lang = "sized"]
+trait Sized {}
+
+#[lang = "deref"]
+pub trait Deref {
+    /// The resulting type after dereferencing.
+    #[stable(feature = "rust1", since = "1.0.0")]
+    // #[rustc_diagnostic_item = "deref_target"]
+    type Target: ?Sized;
+
+    /// Dereferences the value.
+    #[must_use]
+    #[stable(feature = "rust1", since = "1.0.0")]
+    // #[rustc_diagnostic_item = "deref_method"]
+    fn deref(&self) -> &Self::Target;
+}
+
+impl<T: ?Sized> Deref for &T {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        *self
+    }
+}
+
+// this is added because of #3030
+extern "C" {
+    fn never() -> !;
+}
+
+impl<T: ?Sized> !DerefMut for &T {
+    fn deref_mut(&mut self) -> &mut T {
+        unsafe { never() }
+    }
+}
+
+impl<T: ?Sized> Deref for &mut T {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        *self
+    }
+}
+
+#[lang = "deref_mut"]
+pub trait DerefMut: Deref {
+    /// Mutably dereferences the value.
+    #[stable(feature = "rust1", since = "1.0.0")]
+    fn deref_mut(&mut self) -> &mut Self::Target;
+}
+
+impl<T: ?Sized> DerefMut for &mut T {
+    fn deref_mut(&mut self) -> &mut T {
+        *self
+    }
+}