From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../unboxed-closures/unboxed-closures-extern-fn.rs | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/test/ui/unboxed-closures/unboxed-closures-extern-fn.rs

(limited to 'src/test/ui/unboxed-closures/unboxed-closures-extern-fn.rs')

diff --git a/src/test/ui/unboxed-closures/unboxed-closures-extern-fn.rs b/src/test/ui/unboxed-closures/unboxed-closures-extern-fn.rs
new file mode 100644
index 000000000..677cd259a
--- /dev/null
+++ b/src/test/ui/unboxed-closures/unboxed-closures-extern-fn.rs
@@ -0,0 +1,27 @@
+// run-pass
+// Checks that extern fn pointers implement the full range of Fn traits.
+
+use std::ops::{Fn,FnMut,FnOnce};
+
+fn square(x: isize) -> isize { x * x }
+
+fn call_it<F:Fn(isize)->isize>(f: &F, x: isize) -> isize {
+    f(x)
+}
+
+fn call_it_mut<F:FnMut(isize)->isize>(f: &mut F, x: isize) -> isize {
+    f(x)
+}
+
+fn call_it_once<F:FnOnce(isize)->isize>(f: F, x: isize) -> isize {
+    f(x)
+}
+
+fn main() {
+    let x = call_it(&square, 22);
+    let y = call_it_mut(&mut square, 22);
+    let z = call_it_once(square, 22);
+    assert_eq!(x, square(22));
+    assert_eq!(y, square(22));
+    assert_eq!(z, square(22));
+}
-- 
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