diff options
Diffstat (limited to 'src/test/compile-fail/object-safety-phantom-fn.rs')
| -rw-r--r-- | src/test/compile-fail/object-safety-phantom-fn.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/compile-fail/object-safety-phantom-fn.rs b/src/test/compile-fail/object-safety-phantom-fn.rs new file mode 100644 index 00000000000..1c95ee43d27 --- /dev/null +++ b/src/test/compile-fail/object-safety-phantom-fn.rs @@ -0,0 +1,34 @@ +// Copyright 2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// Check that `Self` appearing in a phantom fn does not make a trait not object safe. + +#![feature(rustc_attrs)] +#![allow(dead_code)] + +use std::marker::PhantomFn; + +trait Baz : PhantomFn<Self> { +} + +trait Bar<T> : PhantomFn<(Self, T)> { +} + +fn make_bar<T:Bar<u32>>(t: &T) -> &Bar<u32> { + t +} + +fn make_baz<T:Baz>(t: &T) -> &Baz { + t +} + +#[rustc_error] +fn main() { //~ ERROR compilation successful +} |
