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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/issues/issue-29663.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/issues/issue-29663.rs')
-rw-r--r-- | tests/ui/issues/issue-29663.rs | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-29663.rs b/tests/ui/issues/issue-29663.rs new file mode 100644 index 000000000..e2e89a8bf --- /dev/null +++ b/tests/ui/issues/issue-29663.rs @@ -0,0 +1,56 @@ +// run-pass +#![allow(stable_features)] +// write_volatile causes an LLVM assert with composite types + +#![feature(volatile)] +use std::ptr::{read_volatile, write_volatile}; + +#[derive(Debug, Eq, PartialEq)] +struct A(u32); +#[derive(Debug, Eq, PartialEq)] +struct B(u64); +#[derive(Debug, Eq, PartialEq)] +struct C(u32, u32); +#[derive(Debug, Eq, PartialEq)] +struct D(u64, u64); +#[derive(Debug, Eq, PartialEq)] +struct E([u64; 32]); + +fn main() { + unsafe { + let mut x: u32 = 0; + write_volatile(&mut x, 1); + assert_eq!(read_volatile(&x), 1); + assert_eq!(x, 1); + + let mut x: u64 = 0; + write_volatile(&mut x, 1); + assert_eq!(read_volatile(&x), 1); + assert_eq!(x, 1); + + let mut x = A(0); + write_volatile(&mut x, A(1)); + assert_eq!(read_volatile(&x), A(1)); + assert_eq!(x, A(1)); + + let mut x = B(0); + write_volatile(&mut x, B(1)); + assert_eq!(read_volatile(&x), B(1)); + assert_eq!(x, B(1)); + + let mut x = C(0, 0); + write_volatile(&mut x, C(1, 1)); + assert_eq!(read_volatile(&x), C(1, 1)); + assert_eq!(x, C(1, 1)); + + let mut x = D(0, 0); + write_volatile(&mut x, D(1, 1)); + assert_eq!(read_volatile(&x), D(1, 1)); + assert_eq!(x, D(1, 1)); + + let mut x = E([0; 32]); + write_volatile(&mut x, E([1; 32])); + assert_eq!(read_volatile(&x), E([1; 32])); + assert_eq!(x, E([1; 32])); + } +} |