1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/hygiene/stdlib-prelude-from-opaque-late.rs b/src/test/ui/hygiene/stdlib-prelude-from-opaque-late.rs
new file mode 100644
index 000000000..cf65de2bc
--- /dev/null
+++ b/src/test/ui/hygiene/stdlib-prelude-from-opaque-late.rs
@@ -0,0 +1,16 @@
+// check-pass
+
+#![feature(decl_macro)]
+
+macro mac() {
+    mod m {
+        fn f() {
+            std::mem::drop(0); // OK (extern prelude)
+            drop(0); // OK (stdlib prelude)
+        }
+    }
+}
+
+mac!();
+
+fn main() {}