1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/resolve/extern-prelude.rs b/tests/ui/resolve/extern-prelude.rs
new file mode 100644
index 00000000000..50fed6034aa
--- /dev/null
+++ b/tests/ui/resolve/extern-prelude.rs
@@ -0,0 +1,31 @@
+// build-pass (FIXME(62277): could be check-pass?)
+// compile-flags:--extern extern_prelude --extern Vec
+// aux-build:extern-prelude.rs
+// aux-build:extern-prelude-vec.rs
+
+fn basic() {
+    // It works
+    let s = extern_prelude::S;
+    s.external();
+}
+
+fn shadow_mod() {
+    // Local module shadows `extern_prelude` from extern prelude
+    mod extern_prelude {
+        pub struct S;
+
+        impl S {
+            pub fn internal(&self) {}
+        }
+    }
+
+    let s = extern_prelude::S;
+    s.internal(); // OK
+}
+
+fn shadow_prelude() {
+    // Extern prelude shadows standard library prelude
+    let x = Vec::new(0f32, ()); // OK
+}
+
+fn main() {}