rust/src/test/run-make/static-unwinding/lib.rs

// 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.

#![crate_type = "rlib"]

pub static mut statik: int = 0;

struct A;
impl Drop for A {
    fn drop(&mut self) {
        unsafe { statik = 1; }
    }
}

pub fn callback<F>(f: F) where F: FnOnce() {
    let _a = A;
    f();
}