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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/deriving/deriving-with-repr-packed.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/deriving/deriving-with-repr-packed.rs')
-rw-r--r-- | src/test/ui/deriving/deriving-with-repr-packed.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/ui/deriving/deriving-with-repr-packed.rs b/src/test/ui/deriving/deriving-with-repr-packed.rs new file mode 100644 index 000000000..8ce444be1 --- /dev/null +++ b/src/test/ui/deriving/deriving-with-repr-packed.rs @@ -0,0 +1,36 @@ +// run-pass +// check that derive on a packed struct does not call field +// methods with a misaligned field. + +use std::mem; + +#[derive(Copy, Clone)] +struct Aligned(usize); + +#[inline(never)] +fn check_align(ptr: *const Aligned) { + assert_eq!(ptr as usize % mem::align_of::<Aligned>(), + 0); +} + +impl PartialEq for Aligned { + fn eq(&self, other: &Self) -> bool { + check_align(self); + check_align(other); + self.0 == other.0 + } +} + +#[repr(packed)] +#[derive(Copy, Clone, PartialEq)] +struct Packed(Aligned, Aligned); + +#[derive(PartialEq)] +#[repr(C)] +struct Dealigned<T>(u8, T); + +fn main() { + let d1 = Dealigned(0, Packed(Aligned(1), Aligned(2))); + let ck = d1 == d1; + assert!(ck); +} |