1 files changed, 14 insertions, 0 deletions
diff --git a/tests/ui/variance/variance-use-covariant-struct-1.rs b/tests/ui/variance/variance-use-covariant-struct-1.rs
new file mode 100644
index 00000000000..f0fd7b26e4e
--- /dev/null
+++ b/tests/ui/variance/variance-use-covariant-struct-1.rs
@@ -0,0 +1,14 @@
+// Test that a covariant struct does not permit the lifetime of a
+// reference to be enlarged.
+
+struct SomeStruct<T>(T);
+
+fn foo<'min,'max>(v: SomeStruct<&'min ()>)
+                  -> SomeStruct<&'max ()>
+    where 'max : 'min
+{
+    v
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn main() { }