47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
// Copyright 2016 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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use std::ops::Deref;
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struct Obj<F> where F: FnMut() -> u32 {
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fn_ptr: fn() -> (),
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closure: F,
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}
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struct C {
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c_fn_ptr: fn() -> (),
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}
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struct D(C);
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impl Deref for D {
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type Target = C;
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fn deref(&self) -> &C {
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&self.0
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}
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}
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fn empty() {}
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fn main() {
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let o = Obj { fn_ptr: empty, closure: || 42 };
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let p = &o;
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p.closure(); //~ ERROR no method named `closure` found
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//~^ NOTE use `(p.closure)(...)` if you meant to call the function stored in the `closure` field
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let q = &p;
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q.fn_ptr(); //~ ERROR no method named `fn_ptr` found
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//~^ NOTE use `(q.fn_ptr)(...)` if you meant to call the function stored in the `fn_ptr` field
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let r = D(C { c_fn_ptr: empty });
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let s = &r;
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s.c_fn_ptr(); //~ ERROR no method named `c_fn_ptr` found
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//~^ NOTE use `(s.c_fn_ptr)(...)` if you meant to call the function stored in the `c_fn_ptr`
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}
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