X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Ftest%2Fui%2Fproc-macro%2Fderive-helper-shadowing.rs;h=f0ca34db414d441b539f851363813f9f4ff1b83c;hb=8668c1a19015148821c37255922f9a9b603dd148;hp=fe324ae63cd33b6e1092a2f66bf83398e52653b3;hpb=808522894b612bca8273f20ba4cfa328622c5a97;p=rust.git

diff --git a/src/test/ui/proc-macro/derive-helper-shadowing.rs b/src/test/ui/proc-macro/derive-helper-shadowing.rs
index fe324ae63cd..f0ca34db414 100644
--- a/src/test/ui/proc-macro/derive-helper-shadowing.rs
+++ b/src/test/ui/proc-macro/derive-helper-shadowing.rs
@@ -1,11 +1,21 @@
 // edition:2018
 // aux-build:test-macros.rs
+// aux-build:derive-helper-shadowing.rs
 
 #[macro_use]
 extern crate test_macros;
+#[macro_use]
+extern crate derive_helper_shadowing;
 
 use test_macros::empty_attr as empty_helper;
 
+macro_rules! gen_helper_use {
+    () => {
+        #[empty_helper] //~ ERROR cannot find attribute `empty_helper` in this scope
+        struct W;
+    }
+}
+
 #[empty_helper] //~ ERROR `empty_helper` is ambiguous
 #[derive(Empty)]
 struct S {
@@ -20,12 +30,25 @@ mod inner {
             // OK, no ambiguity, the non-helper attribute is not in scope here, only the helper.
             #[empty_helper]
             struct V;
+
+            gen_helper_use!();
+
+            #[derive(GenHelperUse)] //~ ERROR cannot find attribute `empty_helper` in this scope
+            struct Owo;
+
+            use empty_helper as renamed;
+            #[renamed] //~ ERROR cannot use a derive helper attribute through an import
+            struct Wow;
         }
 
         0
     }]
 }
 
+// OK, no ambiguity, only the non-helper attribute is in scope.
+#[empty_helper]
+struct Z;
+
 fn main() {
     let s = S { field: [] };
 }