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-rw-r--r--tests/ui/extern/issue-13655.rs32
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/extern/issue-13655.rs b/tests/ui/extern/issue-13655.rs
new file mode 100644
index 000000000..6dd184799
--- /dev/null
+++ b/tests/ui/extern/issue-13655.rs
@@ -0,0 +1,32 @@
+// run-pass
+#![feature(fn_traits, unboxed_closures)]
+use std::ops::Fn;
+
+struct Foo<T>(T);
+
+impl<T: Copy> Fn<()> for Foo<T> {
+ extern "rust-call" fn call(&self, _: ()) -> T {
+ match *self {
+ Foo(t) => t
+ }
+ }
+}
+
+impl<T: Copy> FnMut<()> for Foo<T> {
+ extern "rust-call" fn call_mut(&mut self, _: ()) -> T {
+ self.call(())
+ }
+}
+
+impl<T: Copy> FnOnce<()> for Foo<T> {
+ type Output = T;
+
+ extern "rust-call" fn call_once(self, _: ()) -> T {
+ self.call(())
+ }
+}
+
+fn main() {
+ let t: u8 = 1;
+ println!("{}", Foo(t)());
+}