diff --git a/src/test/run-pass/issue-506.rs b/src/test/run-pass/issue-506.rs
new file mode 100644
index 0000000000000..623aae4beab6f
--- /dev/null
+++ b/src/test/run-pass/issue-506.rs
@@ -0,0 +1,12 @@
+/*
+  A reduced test case for Issue #506, provided by Rob Arnold.
+*/
+
+native "rust" mod rustrt {
+  fn task_yield();
+}
+
+fn main() {
+  spawn rustrt::task_yield();
+}
+