1 files changed, 23 insertions, 0 deletions
diff --git a/rust/qemu-api/src/zeroable.rs b/rust/qemu-api/src/zeroable.rs
new file mode 100644
index 0000000..45ec95c
--- /dev/null
+++ b/rust/qemu-api/src/zeroable.rs
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/// Encapsulates the requirement that
+/// `MaybeUninit::<Self>::zeroed().assume_init()` does not cause
+/// undefined behavior.
+///
+/// # Safety
+///
+/// Do not add this trait to a type unless all-zeroes is
+/// a valid value for the type.  In particular, remember that raw
+/// pointers can be zero, but references and `NonNull<T>` cannot
+/// unless wrapped with `Option<>`.
+pub unsafe trait Zeroable: Default {
+    /// SAFETY: If the trait was added to a type, then by definition
+    /// this is safe.
+    const ZERO: Self = unsafe { ::core::mem::MaybeUninit::<Self>::zeroed().assume_init() };
+}
+
+unsafe impl Zeroable for crate::bindings::Property__bindgen_ty_1 {}
+unsafe impl Zeroable for crate::bindings::Property {}
+unsafe impl Zeroable for crate::bindings::VMStateDescription {}
+unsafe impl Zeroable for crate::bindings::MemoryRegionOps__bindgen_ty_1 {}
+unsafe impl Zeroable for crate::bindings::MemoryRegionOps__bindgen_ty_2 {}