bjoernager/rust
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Make tests work on 32 bit and 64 bit

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This commit is contained in:
Oli Scherer 2022-07-11 10:43:47 +00:00
parent 9a204509d2
commit fcd7207d0e
1 changed files with 21 additions and 18 deletions
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39
src/test/ui/layout/unsafe-cell-hides-niche.rs
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@ -8,6 +8,7 @@
#![feature(repr_simd)]
use std::cell::{UnsafeCell, RefCell, Cell};
use std::mem::size_of;
use std::num::NonZeroU32 as N32;
use std::sync::{Mutex, RwLock};
@ -22,11 +23,13 @@ struct Size<const S: usize>;
// Overwriting the runtime assertion and making it a compile-time assertion
macro_rules! assert_size {
($a:ty, $b:literal) => {{
const _: Size::<$b> = Size::<{std::mem::size_of::<$a>()}>;
($a:ty, $b:expr) => {{
const _: Size::<{$b}> = Size::<{size_of::<$a>()}>;
}};
}
const PTR_SIZE: usize = std::mem::size_of::<*const ()>();
fn main() {
assert_size!(Option<Wrapper<u32>>, 8);
assert_size!(Option<Wrapper<N32>>, 4); // (✓ niche opt)
@ -38,25 +41,25 @@ fn main() {
assert_size!(Option<UnsafeCell<u32>>, 8);
assert_size!(Option<UnsafeCell<N32>>, 8); // (✗ niche opt)
assert_size!( UnsafeCell<&()> , 8);
assert_size!(Option<UnsafeCell<&()>>, 16); // (✗ niche opt)
assert_size!( Cell<&()> , 8);
assert_size!(Option< Cell<&()>>, 16); // (✗ niche opt)
assert_size!( RefCell<&()> , 16);
assert_size!(Option< RefCell<&()>>, 24); // (✗ niche opt)
assert_size!( RwLock<&()> , 24);
assert_size!(Option< RwLock<&()>>, 32); // (✗ niche opt)
assert_size!( Mutex<&()> , 16);
assert_size!(Option< Mutex<&()>>, 24); // (✗ niche opt)
assert_size!( UnsafeCell<&()> , PTR_SIZE);
assert_size!(Option<UnsafeCell<&()>>, PTR_SIZE * 2); // (✗ niche opt)
assert_size!( Cell<&()> , PTR_SIZE);
assert_size!(Option< Cell<&()>>, PTR_SIZE * 2); // (✗ niche opt)
assert_size!( RefCell<&()> , PTR_SIZE * 2);
assert_size!(Option< RefCell<&()>>, PTR_SIZE * 3); // (✗ niche opt)
assert_size!( RwLock<&()> , if cfg!(target_pointer_width = "32") { 16 } else { 24 });
assert_size!(Option< RwLock<&()>>, if cfg!(target_pointer_width = "32") { 20 } else { 32 }); // (✗ niche opt)
assert_size!( Mutex<&()> , if cfg!(target_pointer_width = "32") { 12 } else { 16 });
assert_size!(Option< Mutex<&()>>, if cfg!(target_pointer_width = "32") { 16 } else { 24 }); // (✗ niche opt)
assert_size!( UnsafeCell<&[i32]> , 16);
assert_size!(Option<UnsafeCell<&[i32]>>, 24); // (✗ niche opt)
assert_size!( UnsafeCell<(&(), &())> , 16);
assert_size!(Option<UnsafeCell<(&(), &())>>, 24); // (✗ niche opt)
assert_size!( UnsafeCell<&[i32]> , PTR_SIZE * 2);
assert_size!(Option<UnsafeCell<&[i32]>>, PTR_SIZE * 3); // (✗ niche opt)
assert_size!( UnsafeCell<(&(), &())> , PTR_SIZE * 2);
assert_size!(Option<UnsafeCell<(&(), &())>>, PTR_SIZE * 3); // (✗ niche opt)
trait Trait {}
assert_size!( UnsafeCell<&dyn Trait> , 16);
assert_size!(Option<UnsafeCell<&dyn Trait>>, 24); // (✗ niche opt)
assert_size!( UnsafeCell<&dyn Trait> , PTR_SIZE * 2);
assert_size!(Option<UnsafeCell<&dyn Trait>>, PTR_SIZE * 3); // (✗ niche opt)
#[repr(simd)]
pub struct Vec4<T>([T; 4]);