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add tests for RFC 3391

This commit is contained in:
Ralf Jung 2023-09-02 13:19:40 +02:00
parent c3e14edd8b
commit 02217d1a16
1 changed files with 25 additions and 0 deletions
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25
tests/ui/abi/compatibility.rs
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@ -73,4 +73,29 @@ test_abi_compatible!(zst_unit, Zst, ());
test_abi_compatible!(zst_array, Zst, [u8; 0]);
test_abi_compatible!(nonzero_int, NonZeroI32, i32);
// RFC 3391 <https://rust-lang.github.io/rfcs/3391-result_ffi_guarantees.html>.
macro_rules! test_nonnull {
($name:ident, $t:ty) => {
mod $name {
use super::*;
test_abi_compatible!(option, Option<$t>, $t);
test_abi_compatible!(result_err_unit, Result<$t, ()>, $t);
test_abi_compatible!(result_ok_unit, Result<(), $t>, $t);
test_abi_compatible!(result_err_zst, Result<$t, Zst>, $t);
test_abi_compatible!(result_ok_zst, Result<Zst, $t>, $t);
test_abi_compatible!(result_err_arr, Result<$t, [i8; 0]>, $t);
test_abi_compatible!(result_ok_arr, Result<[i8; 0], $t>, $t);
}
}
}
test_nonnull!(ref_, &i32);
test_nonnull!(mut_, &mut i32);
test_nonnull!(ref_unsized, &[i32]);
test_nonnull!(mut_unsized, &mut [i32]);
test_nonnull!(fn_, fn());
test_nonnull!(nonnull, NonNull<i32>);
test_nonnull!(nonnull_unsized, NonNull<dyn std::fmt::Debug>);
test_nonnull!(non_zero, NonZeroI32);
fn main() {}