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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/transmutability/arrays/should_have_correct_length.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/transmutability/arrays/should_have_correct_length.rs')
-rw-r--r-- | tests/ui/transmutability/arrays/should_have_correct_length.rs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tests/ui/transmutability/arrays/should_have_correct_length.rs b/tests/ui/transmutability/arrays/should_have_correct_length.rs new file mode 100644 index 000000000..353797d0c --- /dev/null +++ b/tests/ui/transmutability/arrays/should_have_correct_length.rs @@ -0,0 +1,44 @@ +// check-pass +//! An array must have the correct length. + +#![crate_type = "lib"] +#![feature(transmutability)] +#![allow(dead_code, incomplete_features, non_camel_case_types)] + +mod assert { + use std::mem::{Assume, BikeshedIntrinsicFrom}; + pub struct Context; + + pub fn is_maybe_transmutable<Src, Dst>() + where + Dst: BikeshedIntrinsicFrom<Src, Context, { Assume::SAFETY.and(Assume::VALIDITY) }> + {} +} + +fn should_have_len_0() { + type Array = [u8; 0]; + #[repr(C)] struct Struct(); + assert::is_maybe_transmutable::<Array, Struct>(); + assert::is_maybe_transmutable::<Struct, Array>(); +} + +fn should_have_len_1() { + type Array = [u8; 1]; + #[repr(C)] struct Struct(u8); + assert::is_maybe_transmutable::<Array, Struct>(); + assert::is_maybe_transmutable::<Struct, Array>(); +} + +fn should_have_len_2() { + type Array = [u8; 2]; + #[repr(C)] struct Struct(u8, u8); + assert::is_maybe_transmutable::<Array, Struct>(); + assert::is_maybe_transmutable::<Struct, Array>(); +} + +fn should_have_len_3() { + type Array = [u8; 3]; + #[repr(C)] struct Struct(u8, u8, u8); + assert::is_maybe_transmutable::<Array, Struct>(); + assert::is_maybe_transmutable::<Struct, Array>(); +} |