diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/structs-enums/tag-align-u64.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/structs-enums/tag-align-u64.rs')
-rw-r--r-- | tests/ui/structs-enums/tag-align-u64.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/ui/structs-enums/tag-align-u64.rs b/tests/ui/structs-enums/tag-align-u64.rs new file mode 100644 index 000000000..684b27cd0 --- /dev/null +++ b/tests/ui/structs-enums/tag-align-u64.rs @@ -0,0 +1,29 @@ +// run-pass +#![allow(dead_code)] +#![allow(deprecated)] + +use std::mem; + +enum Tag { + TagInner(u64) +} + +struct Rec { + c8: u8, + t: Tag +} + +fn mk_rec() -> Rec { + return Rec { c8:0, t:Tag::TagInner(0) }; +} + +fn is_u64_aligned(u: &Tag) -> bool { + let p: usize = unsafe { mem::transmute(u) }; + let u64_align = std::mem::min_align_of::<u64>(); + return (p & (u64_align - 1)) == 0; +} + +pub fn main() { + let x = mk_rec(); + assert!(is_u64_aligned(&x.t)); +} |