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diff --git a/tests/ui/regions/regions-variance-contravariant-use-covariant-in-second-position.rs b/tests/ui/regions/regions-variance-contravariant-use-covariant-in-second-position.rs
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+++ b/tests/ui/regions/regions-variance-contravariant-use-covariant-in-second-position.rs
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+// Test that a type which is covariant with respect to its region
+// parameter yields an error when used in a contravariant way.
+//
+// Note: see variance-regions-*.rs for the tests that check that the
+// variance inference works in the first place.
+
+// `S` is contravariant with respect to both parameters.
+struct S<'a, 'b> {
+ f: &'a isize,
+ g: &'b isize,
+}
+
+fn use_<'short,'long>(c: S<'long, 'short>,
+ s: &'short isize,
+ l: &'long isize,
+ _where:Option<&'short &'long ()>) {
+
+ let _: S<'long, 'short> = c; // OK
+ let _: S<'short, 'short> = c; // OK
+
+ // Test whether S<_,'short> <: S<_,'long>. Since
+ // 'short <= 'long, this would be true if the Contravariant type were
+ // covariant with respect to its parameter 'a.
+
+ let _: S<'long, 'long> = c;
+ //~^ ERROR lifetime may not live long enough
+}
+
+fn main() {}