mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 06:22:00 +00:00
26 lines
736 B
Rust
26 lines
736 B
Rust
//@ run-pass
|
|
//@ pretty-expanded FIXME #23616
|
|
#![allow(non_upper_case_globals)]
|
|
|
|
/*!
|
|
* Try to double-check that static fns have the right size (with or
|
|
* without dummy env ptr, as appropriate) by iterating a size-2 array.
|
|
* If the static size differs from the runtime size, the second element
|
|
* should be read as a null or otherwise wrong pointer and crash.
|
|
*/
|
|
|
|
fn f() { }
|
|
static bare_fns: &'static [fn()] = &[f, f];
|
|
struct S<F: FnOnce()>(F);
|
|
static mut closures: &'static mut [S<fn()>] = &mut [S(f as fn()), S(f as fn())];
|
|
|
|
pub fn main() {
|
|
unsafe {
|
|
for &bare_fn in bare_fns { bare_fn() }
|
|
for closure in &mut *closures {
|
|
let S(ref mut closure) = *closure;
|
|
(*closure)()
|
|
}
|
|
}
|
|
}
|