1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/resolve/auxiliary/macro_helpers.rs b/tests/ui/resolve/auxiliary/macro_helpers.rs
new file mode 100644
index 00000000000..43aa336457d
--- /dev/null
+++ b/tests/ui/resolve/auxiliary/macro_helpers.rs
@@ -0,0 +1,16 @@
+/* macro namespace. */
+
+extern crate proc_macro;
+use proc_macro::*;
+use std::str::FromStr;
+
+const ERROR: &str = "fn helper() { \"helper\" }";
+// https://doc.rust-lang.org/nightly/std/prelude/v1/index.html#attributes
+// NOTE: all the bang macros in std are currently unstable.
+#[proc_macro_attribute] pub fn test       // lang.
+    (_: TokenStream, _: TokenStream) -> TokenStream {
+        TokenStream::from_str("fn test_macro() { \"\" }").unwrap() }
+// https://doc.rust-lang.org/nightly/reference/attributes.html#built-in-attributes-index
+#[proc_macro_attribute] pub fn global_allocator // lang.
+    (_: TokenStream, _: TokenStream) -> TokenStream {
+        TokenStream::from_str("fn global_allocator_macro() { \"\" }").unwrap() }