From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../variance/variance-contravariant-arg-object.rs  | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/test/ui/variance/variance-contravariant-arg-object.rs

(limited to 'src/test/ui/variance/variance-contravariant-arg-object.rs')

diff --git a/src/test/ui/variance/variance-contravariant-arg-object.rs b/src/test/ui/variance/variance-contravariant-arg-object.rs
new file mode 100644
index 000000000..701fcaf69
--- /dev/null
+++ b/src/test/ui/variance/variance-contravariant-arg-object.rs
@@ -0,0 +1,27 @@
+#![allow(dead_code)]
+
+// Test that even when `T` is only used in contravariant position, it
+// is treated as invariant.
+
+trait Get<T> : 'static {
+    fn get(&self, t: T);
+}
+
+fn get_min_from_max<'min, 'max>(v: Box<dyn Get<&'max i32>>)
+                                -> Box<dyn Get<&'min i32>>
+    where 'max : 'min
+{
+    v
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn get_max_from_min<'min, 'max>(v: Box<dyn Get<&'min i32>>)
+                                -> Box<dyn Get<&'max i32>>
+    where 'max : 'min
+{
+    // Previously OK:
+    v
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn main() { }
-- 
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