mirror of
https://github.com/Lokathor/bytemuck.git
synced 2024-11-24 07:42:24 +00:00
1039388f0b
Uses the compiler to check that all non-wrapped fields are actually 1-ZSTs, and uses Zeroable to check that all non-wrapped fields are "conjurable". Additionally, relaxes the bound of `PhantomData<T: Zeroable>: Zeroable` to all `T: ?Sized`.
78 lines
1.6 KiB
Rust
78 lines
1.6 KiB
Rust
#![cfg(feature = "derive")]
|
|
#![allow(dead_code)]
|
|
|
|
use bytemuck::{ByteEq, ByteHash, Pod, TransparentWrapper, Zeroable};
|
|
use std::marker::PhantomData;
|
|
|
|
#[derive(Copy, Clone, Pod, Zeroable, ByteEq, ByteHash)]
|
|
#[repr(C)]
|
|
struct Test {
|
|
a: u16,
|
|
b: u16,
|
|
}
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
struct TransparentSingle {
|
|
a: u16,
|
|
}
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
#[transparent(u16)]
|
|
struct TransparentWithZeroSized {
|
|
a: u16,
|
|
b: (),
|
|
}
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
struct TransparentWithGeneric<T: ?Sized> {
|
|
a: T,
|
|
}
|
|
|
|
/// Ensuring that no additional bounds are emitted.
|
|
/// See https://github.com/Lokathor/bytemuck/issues/145
|
|
fn test_generic<T>(x: T) -> TransparentWithGeneric<T> {
|
|
TransparentWithGeneric::wrap(x)
|
|
}
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
#[transparent(T)]
|
|
struct TransparentWithGenericAndZeroSized<T: ?Sized> {
|
|
a: (),
|
|
b: T,
|
|
}
|
|
|
|
/// Ensuring that no additional bounds are emitted.
|
|
/// See https://github.com/Lokathor/bytemuck/issues/145
|
|
fn test_generic_with_zst<T>(x: T) -> TransparentWithGenericAndZeroSized<T> {
|
|
TransparentWithGenericAndZeroSized::wrap(x)
|
|
}
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
struct TransparentUnsized {
|
|
a: dyn std::fmt::Debug,
|
|
}
|
|
|
|
type DynDebug = dyn std::fmt::Debug;
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
#[transparent(DynDebug)]
|
|
struct TransparentUnsizedWithZeroSized {
|
|
a: (),
|
|
b: DynDebug,
|
|
}
|
|
|
|
#[derive(TransparentWrapper)]
|
|
#[repr(transparent)]
|
|
#[transparent(DynDebug)]
|
|
struct TransparentUnsizedWithGenericZeroSizeds<T: ?Sized, U: ?Sized> {
|
|
a: PhantomData<T>,
|
|
b: PhantomData<U>,
|
|
c: DynDebug,
|
|
}
|