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>
---
 src/test/ui/dep-graph/dep-graph-variance-alias.rs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 src/test/ui/dep-graph/dep-graph-variance-alias.rs

(limited to 'src/test/ui/dep-graph/dep-graph-variance-alias.rs')

diff --git a/src/test/ui/dep-graph/dep-graph-variance-alias.rs b/src/test/ui/dep-graph/dep-graph-variance-alias.rs
new file mode 100644
index 000000000..008434696
--- /dev/null
+++ b/src/test/ui/dep-graph/dep-graph-variance-alias.rs
@@ -0,0 +1,22 @@
+// Test that changing what a `type` points to does not go unnoticed
+// by the variance analysis.
+
+// incremental
+// compile-flags: -Z query-dep-graph
+
+#![feature(rustc_attrs)]
+#![allow(dead_code)]
+#![allow(unused_variables)]
+fn main() {}
+
+#[rustc_if_this_changed]
+struct Foo<T> {
+    f: T,
+}
+
+type TypeAlias<T> = Foo<T>;
+
+#[rustc_then_this_would_need(variances_of)] //~ ERROR OK
+struct Use<T> {
+    x: TypeAlias<T>,
+}
-- 
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