Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/auxiliary/first-second.rs b/src/test/ui/proc-macro/auxiliary/first-second.rs
new file mode 100644
index 000000000..6331608fb
--- /dev/null
+++ b/src/test/ui/proc-macro/auxiliary/first-second.rs
@@ -0,0 +1,20 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::{TokenStream, TokenTree, Group, Delimiter};
+
+#[proc_macro_attribute]
+pub fn first(_attr: TokenStream, item: TokenStream) -> TokenStream {
+    let tokens: TokenStream = "#[derive(Second)]".parse().unwrap();
+    let wrapped = TokenTree::Group(Group::new(Delimiter::None, item.into_iter().collect()));
+    tokens.into_iter().chain(std::iter::once(wrapped)).collect()
+}
+
+#[proc_macro_derive(Second)]
+pub fn second(item: TokenStream) -> TokenStream {
+    TokenStream::new()
+}