diff --git a/src/test/run-pass/log-linearized.rs b/src/test/run-pass/log-linearized.rs
new file mode 100644
index 000000000000..3a0ccc8d9d30
--- /dev/null
+++ b/src/test/run-pass/log-linearized.rs
@@ -0,0 +1,25 @@
+// xfail-test
+
+// Tests that shapes respect linearize_ty_params().
+
+tag option<T> {
+    none;
+    some(T);
+}
+
+type smallintmap<T> = @{mutable v: [mutable option<T>]};
+
+fn mk<@T>() -> smallintmap<T> {
+    let v: [mutable option<T>] = [mutable];
+    ret @{mutable v: v};
+}
+
+fn f<@T,@U>() {
+    let sim = mk::<U>();
+    log_err sim;
+}
+
+fn main() {
+    f::<int,int>();
+}
+