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make sure the types in the ABI compat test actually type-check

This commit is contained in:
Ralf Jung 2023-09-08 16:13:24 +02:00
parent 36b8e4aa75
commit 10951f3500
1 changed files with 5 additions and 2 deletions
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7
tests/ui/abi/compatibility.rs
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@ -5,11 +5,14 @@ use std::marker::PhantomData;
use std::mem::ManuallyDrop;
use std::num::NonZeroI32;
use std::ptr::NonNull;
use std::mem::ManuallyDrop;
macro_rules! assert_abi_compatible {
($name:ident, $t1:ty, $t2:ty) => {
mod $name {
use super::*;
// Declaring a `type` doesn't even check well-formedness, so we also declare a function.
fn check_wf(_x: $t1, _y: $t2) {}
// Test argument and return value, `Rust` and `C` ABIs.
#[rustc_abi(assert_eq)]
type TestRust = (fn($t1) -> $t1, fn($t2) -> $t2);
@ -77,9 +80,9 @@ test_abi_compatible!(nonzero_int, NonZeroI32, i32);
// `repr(transparent)` compatibility.
#[repr(transparent)]
struct Wrapper1<T>(T);
struct Wrapper1<T: ?Sized>(T);
#[repr(transparent)]
struct Wrapper2<T>((), Zst, T);
struct Wrapper2<T: ?Sized>((), Zst, T);
#[repr(transparent)]
struct Wrapper3<T>(T, [u8; 0], PhantomData<u64>);
#[repr(transparent)]