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>
---
 tests/ui/consts/const_in_pattern/issue-73431.rs | 29 +++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 tests/ui/consts/const_in_pattern/issue-73431.rs

(limited to 'tests/ui/consts/const_in_pattern/issue-73431.rs')

diff --git a/tests/ui/consts/const_in_pattern/issue-73431.rs b/tests/ui/consts/const_in_pattern/issue-73431.rs
new file mode 100644
index 000000000..fa18a3af1
--- /dev/null
+++ b/tests/ui/consts/const_in_pattern/issue-73431.rs
@@ -0,0 +1,29 @@
+// run-pass
+
+// Regression test for https://github.com/rust-lang/rust/issues/73431.
+
+pub trait Zero {
+    const ZERO: Self;
+}
+
+impl Zero for usize {
+    const ZERO: Self = 0;
+}
+
+impl<T: Zero> Zero for Wrapper<T> {
+    const ZERO: Self = Wrapper(T::ZERO);
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Wrapper<T>(T);
+
+fn is_zero(x: Wrapper<usize>) -> bool {
+    match x {
+        Zero::ZERO => true,
+        _ => false,
+    }
+}
+
+fn main() {
+    let _ = is_zero(Wrapper(42));
+}
-- 
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