From a4b7ed7a42c716ab9f05e351f003d589124fd55d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:18:58 +0200
Subject: Adding upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../specialization-overlap-projection.rs           | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 tests/ui/specialization/specialization-overlap-projection.rs

(limited to 'tests/ui/specialization/specialization-overlap-projection.rs')

diff --git a/tests/ui/specialization/specialization-overlap-projection.rs b/tests/ui/specialization/specialization-overlap-projection.rs
new file mode 100644
index 000000000..b07efb2a5
--- /dev/null
+++ b/tests/ui/specialization/specialization-overlap-projection.rs
@@ -0,0 +1,25 @@
+// run-pass
+
+// Test that impls on projected self types can resolve overlap, even when the
+// projections involve specialization, so long as the associated type is
+// provided by the most specialized impl.
+
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+
+trait Assoc {
+    type Output;
+}
+
+impl<T> Assoc for T {
+    default type Output = bool;
+}
+
+impl Assoc for u8 { type Output = u8; }
+impl Assoc for u16 { type Output = u16; }
+
+trait Foo {}
+impl Foo for u32 {}
+impl Foo for <u8 as Assoc>::Output {}
+impl Foo for <u16 as Assoc>::Output {}
+
+fn main() {}
-- 
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