1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/rust-2018/uniform-paths/ambiguity-macros-nested.rs b/tests/ui/rust-2018/uniform-paths/ambiguity-macros-nested.rs
new file mode 100644
index 00000000000..678b4774dba
--- /dev/null
+++ b/tests/ui/rust-2018/uniform-paths/ambiguity-macros-nested.rs
@@ -0,0 +1,21 @@
+// edition:2018
+
+// This test is similar to `ambiguity-macros.rs`, but nested in a module.
+
+#![allow(non_camel_case_types)]
+
+mod foo {
+    pub use std::io;
+    //~^ ERROR `std` is ambiguous
+
+    macro_rules! m {
+        () => {
+            mod std {
+                pub struct io;
+            }
+        }
+    }
+    m!();
+}
+
+fn main() {}