From fdccb42167028b33a7ceee7343cfe3500c1c4b8b Mon Sep 17 00:00:00 2001
From: Boxy <rust@boxyuwu.dev>
Date: Thu, 22 May 2025 12:52:46 +0100
Subject: Add test/comment about const patterns with unused params

---
 tests/ui/pattern/unused-parameters-const-pattern.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 tests/ui/pattern/unused-parameters-const-pattern.rs

(limited to 'tests/ui/pattern')

diff --git a/tests/ui/pattern/unused-parameters-const-pattern.rs b/tests/ui/pattern/unused-parameters-const-pattern.rs
new file mode 100644
index 00000000000..107c65ddfd3
--- /dev/null
+++ b/tests/ui/pattern/unused-parameters-const-pattern.rs
@@ -0,0 +1,19 @@
+//@ check-pass
+
+// Tests that const patterns that use generic parameters are
+// allowed if we are still able to evaluate them.
+
+trait Trait { const ASSOC: usize; }
+
+impl<T> Trait for T {
+    const ASSOC: usize = 10;
+}
+
+fn foo<T>(a: usize) {
+    match a {
+        <T as Trait>::ASSOC => (),
+        _ => (),
+    }
+}
+
+fn main() {}
-- 
cgit 1.4.1-3-g733a5