diff --git a/src/test/compile-fail/unsafe-fn-assign-deref-ptr.rs b/src/test/compile-fail/unsafe-fn-assign-deref-ptr.rs
new file mode 100644
index 000000000000..cf5dac3ff89f
--- /dev/null
+++ b/src/test/compile-fail/unsafe-fn-assign-deref-ptr.rs
@@ -0,0 +1,11 @@
+// -*- rust -*-
+// error-pattern: unsafe operation requires unsafe function or block
+
+fn f(p: *u8) {
+    *p = 0u8;
+    ret;
+}
+
+fn main() {
+    f();
+}