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Merged
martin-kolinek merged 3 commits into from
Jun 16, 2026
Merged

test(multitude): gate feature-gated over-aligned tests behind utc_backend #505

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1195cc0
test(multitude): gate feature-gated over-aligned tests behind utc_bac…
martin-kolinek Jun 16, 2026
c3d90d4
Merge branch 'main' into makolnek/multitude-utc-feature-gated-tests
martin-kolinek Jun 16, 2026
12b2633
Merge branch 'main' into makolnek/multitude-utc-feature-gated-tests
geeknoid Jun 16, 2026
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21 changes: 14 additions & 7 deletions crates/multitude/tests/bytemuck_integration.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -157,69 +157,75 @@ fn try_alloc_slice_arc_ok() {
// stack cannot satisfy a 64 KiB-aligned frame. The non-slice
// `try_*_over_aligned_returns_err` siblings exercise the same
// alignment-rejection guard on every platform.
#[cfg(not(utc_backend))]
#[derive(Clone, Copy)]
#[repr(C, align(65536))]
struct OverAligned {
_data: u8,
}

// SAFETY: all-zeros is a valid OverAligned (it's just a u8 + padding).
#[cfg(not(utc_backend))]
unsafe impl Zeroable for OverAligned {}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_box_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.bytemuck().try_alloc_box::<OverAligned>();
assert!(result.is_err());
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_arc_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.bytemuck().try_alloc_arc::<OverAligned>();
assert!(result.is_err());
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_slice_box_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.bytemuck().try_alloc_slice_box::<OverAligned>(4);
assert!(result.is_err());
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_slice_arc_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.bytemuck().try_alloc_slice_arc::<OverAligned>(4);
assert!(result.is_err());
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_box_panics_on_over_aligned() {
let arena = Arena::new();
let _ = arena.bytemuck().alloc_box::<OverAligned>();
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_arc_panics_on_over_aligned() {
let arena = Arena::new();
let _ = arena.bytemuck().alloc_arc::<OverAligned>();
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_slice_box_panics_on_over_aligned() {
let arena = Arena::new();
let _ = arena.bytemuck().alloc_slice_box::<OverAligned>(4);
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_slice_arc_panics_on_over_aligned() {
let arena = Arena::new();
Expand Down Expand Up @@ -256,14 +262,15 @@ fn try_alloc_ref_scalar_ok() {
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_ref_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.bytemuck().try_alloc::<OverAligned>();
assert!(result.is_err());
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_ref_panics_on_over_aligned() {
let arena = Arena::new();
Expand Down Expand Up @@ -301,15 +308,15 @@ fn try_alloc_slice_ref_ok() {
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
fn try_alloc_slice_ref_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.bytemuck().try_alloc_slice::<OverAligned>(4);
assert!(result.is_err());
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_slice_ref_panics_on_over_aligned() {
let arena = Arena::new();
Expand Down
20 changes: 13 additions & 7 deletions crates/multitude/tests/zerocopy_integration.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -127,66 +127,71 @@ fn try_alloc_slice_arc_ok() {
// stack cannot satisfy a 64 KiB-aligned frame. The non-slice
// `try_*_over_aligned_returns_err` siblings exercise the same
// alignment-rejection guard on every platform.
#[cfg(not(utc_backend))]
#[derive(FromZeros)]
#[repr(C, align(65536))]
struct OverAligned {
_data: u8,
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_box_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.zerocopy().try_alloc_box::<OverAligned>();
assert!(result.is_err());
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_arc_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.zerocopy().try_alloc_arc::<OverAligned>();
assert!(result.is_err());
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_slice_box_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.zerocopy().try_alloc_slice_box::<OverAligned>(4);
assert!(result.is_err());
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_slice_arc_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.zerocopy().try_alloc_slice_arc::<OverAligned>(4);
assert!(result.is_err());
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_box_panics_on_over_aligned() {
let arena = Arena::new();
let _ = arena.zerocopy().alloc_box::<OverAligned>();
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_arc_panics_on_over_aligned() {
let arena = Arena::new();
let _ = arena.zerocopy().alloc_arc::<OverAligned>();
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_slice_box_panics_on_over_aligned() {
let arena = Arena::new();
let _ = arena.zerocopy().alloc_slice_box::<OverAligned>(4);
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_slice_arc_panics_on_over_aligned() {
let arena = Arena::new();
Expand Down Expand Up @@ -223,14 +228,15 @@ fn try_alloc_ref_scalar_ok() {
}

#[test]
#[cfg(not(utc_backend))]
fn try_alloc_ref_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.zerocopy().try_alloc::<OverAligned>();
assert!(result.is_err());
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_ref_panics_on_over_aligned() {
let arena = Arena::new();
Expand Down Expand Up @@ -268,15 +274,15 @@ fn try_alloc_slice_ref_ok() {
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
fn try_alloc_slice_ref_over_aligned_returns_err() {
let arena = Arena::new();
let result = arena.zerocopy().try_alloc_slice::<OverAligned>(4);
assert!(result.is_err());
}

#[test]
#[cfg(not(target_os = "windows"))]
#[cfg(all(not(target_os = "windows"), not(utc_backend)))]
#[should_panic = "arena allocation failed"]
fn alloc_slice_ref_panics_on_over_aligned() {
let arena = Arena::new();
Expand Down
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