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| author | Paolo Bonzini <pbonzini@redhat.com> | 2024-10-18 10:51:10 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-11-05 14:18:16 +0100 |
| commit | 6e50bde1e1c8edc70145fb87b21b0d0843250600 (patch) | |
| tree | 52f98f9fcb5d98a06d7b92d96a34f614a3ede59c /rust/qemu-api/src/device_class.rs | |
| parent | c92c447ff04ca6a5b80da2930d87637b34713b8c (diff) | |
| download | qemu-6e50bde1e1c8edc70145fb87b21b0d0843250600.zip qemu-6e50bde1e1c8edc70145fb87b21b0d0843250600.tar.gz qemu-6e50bde1e1c8edc70145fb87b21b0d0843250600.tar.bz2 | |
rust: provide safe wrapper for MaybeUninit::zeroed()
MaybeUninit::zeroed() is handy, but it introduces unsafe (and has a
pretty heavy syntax in general). Introduce a trait that provides the
same functionality while staying within safe Rust.
In addition, MaybeUninit::zeroed() is not available as a "const"
function until Rust 1.75.0, so this also prepares for having handwritten
implementations of the trait until we can assume that version.
Reviewed-by: Junjie Mao <junjie.mao@hotmail.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'rust/qemu-api/src/device_class.rs')
| -rw-r--r-- | rust/qemu-api/src/device_class.rs | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/rust/qemu-api/src/device_class.rs b/rust/qemu-api/src/device_class.rs index 4b14cb3..aa6088d 100644 --- a/rust/qemu-api/src/device_class.rs +++ b/rust/qemu-api/src/device_class.rs @@ -31,7 +31,7 @@ macro_rules! define_property { offset: ::core::mem::offset_of!($state, $field) as isize, set_default: true, defval: $crate::bindings::Property__bindgen_ty_1 { u: $defval as u64 }, - ..unsafe { ::core::mem::MaybeUninit::<$crate::bindings::Property>::zeroed().assume_init() } + ..$crate::zeroable::Zeroable::ZERO } }; ($name:expr, $state:ty, $field:expr, $prop:expr, $type:expr$(,)*) => { @@ -41,7 +41,7 @@ macro_rules! define_property { info: $prop, offset: ::core::mem::offset_of!($state, $field) as isize, set_default: false, - ..unsafe { ::core::mem::MaybeUninit::<$crate::bindings::Property>::zeroed().assume_init() } + ..$crate::zeroable::Zeroable::ZERO } }; } @@ -58,7 +58,7 @@ macro_rules! declare_properties { len }] = [ $($prop),*, - unsafe { ::core::mem::MaybeUninit::<$crate::bindings::Property>::zeroed().assume_init() }, + $crate::zeroable::Zeroable::ZERO, ]; }; } @@ -79,7 +79,7 @@ macro_rules! vm_state_description { $vname.as_ptr() },)* unmigratable: true, - ..unsafe { ::core::mem::MaybeUninit::<$crate::bindings::VMStateDescription>::zeroed().assume_init() } + ..$crate::zeroable::Zeroable::ZERO }; } } |