From 65db613b6ef6ea81eb662820d815dfaa36d86187 Mon Sep 17 00:00:00 2001
From: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date: Fri, 22 Aug 2025 12:35:58 +0200
Subject: [PATCH] gccrs: Add fn pointer implementation test

gcc/testsuite/ChangeLog:

	* rust/compile/impl_fnptr.rs: New test.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
---
 gcc/testsuite/rust/compile/impl_fnptr.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 gcc/testsuite/rust/compile/impl_fnptr.rs

diff --git a/gcc/testsuite/rust/compile/impl_fnptr.rs b/gcc/testsuite/rust/compile/impl_fnptr.rs
new file mode 100644
index 00000000000..20c9d88dc1a
--- /dev/null
+++ b/gcc/testsuite/rust/compile/impl_fnptr.rs
@@ -0,0 +1,18 @@
+#[lang = "sized"]
+pub trait Sized {}
+
+#[lang = "eq"]
+pub trait PartialEq<Rhs: ?Sized = Self> {
+    fn eq(&self, other: &Rhs) -> bool;
+
+    fn ne(&self, other: &Rhs) -> bool {
+        !self.eq(other)
+    }
+}
+
+impl<Ret> PartialEq for extern "C" fn() -> Ret {
+    #[inline]
+    fn eq(&self, other: &Self) -> bool {
+        *self as usize == *other as usize
+    }
+}
-- 
2.47.3