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-wrong-abi.rs | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/test/ui/unboxed-closures/unboxed-closures-wrong-abi.rs

(limited to 'src/test/ui/unboxed-closures/unboxed-closures-wrong-abi.rs')

diff --git a/src/test/ui/unboxed-closures/unboxed-closures-wrong-abi.rs b/src/test/ui/unboxed-closures/unboxed-closures-wrong-abi.rs
new file mode 100644
index 000000000..dd76c597d
--- /dev/null
+++ b/src/test/ui/unboxed-closures/unboxed-closures-wrong-abi.rs
@@ -0,0 +1,34 @@
+// Tests that unsafe extern fn pointers do not implement any Fn traits.
+
+use std::ops::{Fn, FnMut, FnOnce};
+
+extern "C" fn square(x: &isize) -> isize {
+    (*x) * (*x)
+}
+
+fn call_it<F: Fn(&isize) -> isize>(_: &F, _: isize) -> isize {
+    0
+}
+fn call_it_mut<F: FnMut(&isize) -> isize>(_: &mut F, _: isize) -> isize {
+    0
+}
+fn call_it_once<F: FnOnce(&isize) -> isize>(_: F, _: isize) -> isize {
+    0
+}
+
+fn a() {
+    let x = call_it(&square, 22);
+    //~^ ERROR E0277
+}
+
+fn b() {
+    let y = call_it_mut(&mut square, 22);
+    //~^ ERROR E0277
+}
+
+fn c() {
+    let z = call_it_once(square, 22);
+    //~^ ERROR E0277
+}
+
+fn main() {}
-- 
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