1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/generate-mod.rs b/tests/ui/proc-macro/generate-mod.rs
new file mode 100644
index 000000000..471f317ed
--- /dev/null
+++ b/tests/ui/proc-macro/generate-mod.rs
@@ -0,0 +1,33 @@
+// Modules generated by transparent proc macros still acts as barriers for names (issue #50504).
+
+// aux-build:generate-mod.rs
+
+extern crate generate_mod;
+
+struct FromOutside;
+
+generate_mod::check!(); //~ ERROR cannot find type `FromOutside` in this scope
+                        //~| ERROR cannot find type `Outer` in this scope
+
+#[generate_mod::check_attr] //~ ERROR cannot find type `FromOutside` in this scope
+                            //~| ERROR cannot find type `OuterAttr` in this scope
+struct S;
+
+#[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope
+                                     //~| ERROR cannot find type `OuterDerive` in this scope
+                                     //~| WARN this was previously accepted
+                                     //~| WARN this was previously accepted
+struct Z;
+
+fn inner_block() {
+    #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope
+                                        //~| ERROR cannot find type `OuterDerive` in this scope
+                                        //~| WARN this was previously accepted
+                                        //~| WARN this was previously accepted
+    struct InnerZ;
+}
+
+#[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed
+struct W;
+
+fn main() {}