test for issue #2443

Author: nikomatsakis

src/test/run-pass/by-val-and-by-move.rs

@@ -0,0 +1,16 @@
+// xfail-test #2443
+// exec-env:RUST_POISON_ON_FREE
+
+fn it_takes_two(x: @int, -y: @int) -> int {
+    free(y);
+    #debug["about to deref"];
+    *x
+}
+
+fn free<T>(-_t: T) {
+}
+
+fn main() {
+    let z = @3;
+    assert 3 == it_takes_two(z, z);
+}