1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/rust-2021/auxiliary/reserved-prefixes-macro-2018.rs b/src/test/ui/rust-2021/auxiliary/reserved-prefixes-macro-2018.rs
new file mode 100644
index 000000000..eb301e5e1
--- /dev/null
+++ b/src/test/ui/rust-2021/auxiliary/reserved-prefixes-macro-2018.rs
@@ -0,0 +1,25 @@
+// force-host
+// edition:2018
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use std::str::FromStr;
+
+#[proc_macro]
+pub fn number_of_tokens_in_a_prefixed_integer_literal(_: TokenStream) -> TokenStream {
+    TokenStream::from_str("hey#123").unwrap().into_iter().count().to_string().parse().unwrap()
+}
+
+#[proc_macro]
+pub fn number_of_tokens_in_a_prefixed_char_literal(_: TokenStream) -> TokenStream {
+    TokenStream::from_str("hey#'a'").unwrap().into_iter().count().to_string().parse().unwrap()
+}
+
+#[proc_macro]
+pub fn number_of_tokens_in_a_prefixed_string_literal(_: TokenStream) -> TokenStream {
+    TokenStream::from_str("hey#\"abc\"").unwrap().into_iter().count().to_string().parse().unwrap()
+}