From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../ui/variance/variance-use-invariant-struct-1.rs | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 tests/ui/variance/variance-use-invariant-struct-1.rs

(limited to 'tests/ui/variance/variance-use-invariant-struct-1.rs')

diff --git a/tests/ui/variance/variance-use-invariant-struct-1.rs b/tests/ui/variance/variance-use-invariant-struct-1.rs
new file mode 100644
index 000000000..72f50f345
--- /dev/null
+++ b/tests/ui/variance/variance-use-invariant-struct-1.rs
@@ -0,0 +1,23 @@
+// Test various uses of structs with distinct variances to make sure
+// they permit lifetimes to be approximated as expected.
+
+struct SomeStruct<T>(*mut T);
+
+fn foo<'min,'max>(v: SomeStruct<&'max ()>)
+                  -> SomeStruct<&'min ()>
+    where 'max : 'min
+{
+    v
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn bar<'min,'max>(v: SomeStruct<&'min ()>)
+                  -> SomeStruct<&'max ()>
+    where 'max : 'min
+{
+    v
+    //~^ ERROR lifetime may not live long enough
+}
+
+
+fn main() { }
-- 
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