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-rw-r--r--tests/ui/variance/variance-use-contravariant-struct-2.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/variance/variance-use-contravariant-struct-2.rs b/tests/ui/variance/variance-use-contravariant-struct-2.rs
new file mode 100644
index 000000000..d4b2d0834
--- /dev/null
+++ b/tests/ui/variance/variance-use-contravariant-struct-2.rs
@@ -0,0 +1,17 @@
+// Test various uses of structs with distinct variances to make sure
+// they permit lifetimes to be approximated as expected.
+
+#![allow(dead_code)]
+// build-pass (FIXME(62277): could be check-pass?)
+
+struct SomeStruct<T>(fn(T));
+
+fn bar<'min,'max>(v: SomeStruct<&'min ()>)
+ -> SomeStruct<&'max ()>
+ where 'max : 'min
+{
+ v
+}
+
+
+fn main() { }