1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/variance/variance-cell-is-invariant.rs b/tests/ui/variance/variance-cell-is-invariant.rs
new file mode 100644
index 000000000..62ce4f91f
--- /dev/null
+++ b/tests/ui/variance/variance-cell-is-invariant.rs
@@ -0,0 +1,19 @@
+// Test that Cell is considered invariant with respect to its
+// type.
+
+use std::cell::Cell;
+
+struct Foo<'a> {
+    x: Cell<Option<&'a isize>>,
+}
+
+fn use_<'short,'long>(c: Foo<'short>,
+                      s: &'short isize,
+                      l: &'long isize,
+                      _where:Option<&'short &'long ()>) {
+    let _: Foo<'long> = c;
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn main() {
+}