29 lines
884 B
Rust
29 lines
884 B
Rust
// Copyright 2012 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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// Regression test for #25954: detect and reject a closure type that
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// references itself.
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use std::cell::{Cell, RefCell};
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struct A<T: Fn()> {
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x: RefCell<Option<T>>,
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b: Cell<i32>,
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}
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fn main() {
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let mut p = A{x: RefCell::new(None), b: Cell::new(4i32)};
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// This is an error about types of infinite size:
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let q = || p.b.set(5i32); //~ ERROR mismatched types
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*(p.x.borrow_mut()) = Some(q);
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}
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