Vendor things

third-party/vendor/zerocopy-derive/tests/enum_from_zeroes.rs

@@ -0,0 +1,35 @@
+// Copyright 2019 The Fuchsia Authors
+//
+// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT
+// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// This file may not be copied, modified, or distributed except according to
+// those terms.
+
+#![allow(warnings)]
+
+mod util;
+
+use {static_assertions::assert_impl_all, zerocopy::FromZeroes};
+
+#[derive(FromZeroes)]
+enum Foo {
+    A,
+}
+
+assert_impl_all!(Foo: FromZeroes);
+
+#[derive(FromZeroes)]
+enum Bar {
+    A = 0,
+}
+
+assert_impl_all!(Bar: FromZeroes);
+
+#[derive(FromZeroes)]
+enum Baz {
+    A = 1,
+    B = 0,
+}
+
+assert_impl_all!(Baz: FromZeroes);