1 files changed, 10 insertions, 0 deletions
diff --git a/tests/ui/error-codes/E0260.rs b/tests/ui/error-codes/E0260.rs
new file mode 100644
index 00000000000..f7eb220b08f
--- /dev/null
+++ b/tests/ui/error-codes/E0260.rs
@@ -0,0 +1,10 @@
+extern crate alloc;
+
+mod alloc {
+//~^ ERROR the name `alloc` is defined multiple times [E0260]
+    pub trait MyTrait {
+        fn do_something();
+    }
+}
+
+fn main() {}