From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/derives/derive-Debug-use-ufcs-tuple.rs | 32 +++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 tests/ui/derives/derive-Debug-use-ufcs-tuple.rs

(limited to 'tests/ui/derives/derive-Debug-use-ufcs-tuple.rs')

diff --git a/tests/ui/derives/derive-Debug-use-ufcs-tuple.rs b/tests/ui/derives/derive-Debug-use-ufcs-tuple.rs
new file mode 100644
index 000000000..5f786769f
--- /dev/null
+++ b/tests/ui/derives/derive-Debug-use-ufcs-tuple.rs
@@ -0,0 +1,32 @@
+// run-pass
+#![allow(warnings)]
+
+#[derive(Debug)]
+pub struct Foo<T>(pub T);
+
+use std::fmt;
+
+impl<T> Field for T {}
+impl<T> Finish for T {}
+impl Dt for &mut fmt::Formatter<'_> {}
+
+pub trait Field {
+    fn field(&self, _: impl Sized) {
+        panic!("got into field");
+    }
+}
+pub trait Finish {
+    fn finish(&self) -> Result<(), std::fmt::Error> {
+        panic!("got into finish");
+    }
+}
+pub trait Dt {
+    fn debug_tuple(&self, _: &str) {
+        panic!("got into debug_tuple");
+    }
+}
+
+fn main() {
+    let foo = Foo(());
+    assert_eq!("Foo(())", format!("{:?}", foo));
+}
-- 
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