40 lines
1.3 KiB
Rust
40 lines
1.3 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test that manual impls of the `Fn` traits are not possible without
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// a feature gate. In fact, the specialized check for these cases
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// never triggers (yet), because they encounter other problems around
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// angle bracket vs parentheses notation.
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#![allow(dead_code)]
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struct Foo;
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impl Fn<()> for Foo {
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extern "rust-call" fn call(self, args: ()) -> () {}
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//~^ ERROR rust-call ABI is subject to change
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}
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struct Foo1;
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impl FnOnce() for Foo1 {
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extern "rust-call" fn call_once(self, args: ()) -> () {}
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//~^ ERROR rust-call ABI is subject to change
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}
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struct Bar;
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impl FnMut<()> for Bar {
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extern "rust-call" fn call_mut(&self, args: ()) -> () {}
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//~^ ERROR rust-call ABI is subject to change
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}
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struct Baz;
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impl FnOnce<()> for Baz {
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extern "rust-call" fn call_once(&self, args: ()) -> () {}
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//~^ ERROR rust-call ABI is subject to change
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}
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fn main() {}
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