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1 | // Copyright 2013 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
b7449926 | 11 | // run-pass |
c34b1796 | 12 | // pretty-expanded FIXME #23616 |
b7449926 | 13 | #![allow(non_upper_case_globals)] |
c34b1796 | 14 | |
223e47cc LB |
15 | /*! |
16 | * Try to double-check that static fns have the right size (with or | |
17 | * without dummy env ptr, as appropriate) by iterating a size-2 array. | |
18 | * If the static size differs from the runtime size, the second element | |
19 | * should be read as a null or otherwise wrong pointer and crash. | |
20 | */ | |
21 | ||
22 | fn f() { } | |
1a4d82fc JJ |
23 | static bare_fns: &'static [fn()] = &[f, f]; |
24 | struct S<F: FnOnce()>(F); | |
25 | static mut closures: &'static mut [S<fn()>] = &mut [S(f as fn()), S(f as fn())]; | |
223e47cc LB |
26 | |
27 | pub fn main() { | |
1a4d82fc | 28 | unsafe { |
85aaf69f SL |
29 | for &bare_fn in bare_fns { bare_fn() } |
30 | for closure in &mut *closures { | |
1a4d82fc JJ |
31 | let S(ref mut closure) = *closure; |
32 | (*closure)() | |
33 | } | |
34 | } | |
223e47cc | 35 | } |