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also test ABI-compatibility for some unsized types

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This commit is contained in:
Ralf Jung 2023-09-08 16:21:53 +02:00
parent 10951f3500
commit 721dfc5994
1 changed files with 19 additions and 2 deletions
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21
tests/ui/abi/compatibility.rs
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@ -1,5 +1,5 @@
// check-pass
#![feature(rustc_attrs, transparent_unions)]
#![feature(rustc_attrs, unsized_fn_params, transparent_unions)]
#![allow(unused, improper_ctypes_definitions)]
use std::marker::PhantomData;
use std::mem::ManuallyDrop;
@ -26,7 +26,7 @@ macro_rules! assert_abi_compatible {
struct Zst;
#[repr(C)]
struct ReprC1<T>(T);
struct ReprC1<T: ?Sized>(T);
#[repr(C)]
struct ReprC2Int<T>(i32, T);
#[repr(C)]
@ -119,6 +119,23 @@ test_transparent!(large_array, [i32; 16]);
test_transparent!(enum_, Option<i32>);
test_transparent!(enum_niched, Option<&'static i32>);
// Some tests with unsized types (not all wrappers are compatible with that).
macro_rules! test_transparent_unsized {
($name:ident, $t:ty) => {
mod $name {
use super::*;
assert_abi_compatible!(wrap1, $t, Wrapper1<$t>);
assert_abi_compatible!(wrap1_reprc, ReprC1<$t>, ReprC1<Wrapper1<$t>>);
assert_abi_compatible!(wrap2, $t, Wrapper2<$t>);
assert_abi_compatible!(wrap2_reprc, ReprC1<$t>, ReprC1<Wrapper2<$t>>);
}
};
}
test_transparent_unsized!(str_, str);
test_transparent_unsized!(slice, [u8]);
test_transparent_unsized!(dyn_trait, dyn std::any::Any);
// RFC 3391 <https://rust-lang.github.io/rfcs/3391-result_ffi_guarantees.html>.
macro_rules! test_nonnull {
($name:ident, $t:ty) => {