1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/auxiliary/bang-macro.rs b/src/test/ui/proc-macro/auxiliary/bang-macro.rs
new file mode 100644
index 000000000..ff0002282
--- /dev/null
+++ b/src/test/ui/proc-macro/auxiliary/bang-macro.rs
@@ -0,0 +1,17 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro]
+pub fn rewrite(input: TokenStream) -> TokenStream {
+    let input = input.to_string();
+
+    assert_eq!(input, r#""Hello, world!""#);
+
+    r#""NOT Hello, world!""#.parse().unwrap()
+}