1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/duplicate/dupe-symbols-4.rs b/tests/ui/duplicate/dupe-symbols-4.rs
new file mode 100644
index 000000000..de6610c3e
--- /dev/null
+++ b/tests/ui/duplicate/dupe-symbols-4.rs
@@ -0,0 +1,24 @@
+// build-fail
+
+//
+// error-pattern: symbol `fail` is already defined
+#![crate_type="rlib"]
+#![allow(warnings)]
+
+
+pub trait A {
+    fn fail(self);
+}
+
+struct B;
+struct C;
+
+impl A for B {
+    #[no_mangle]
+    fn fail(self) {}
+}
+
+impl A for C {
+    #[no_mangle]
+    fn fail(self) {}
+}