Function check_raw_pointer

src/utils.rs:43–51

Convert a `*mut c_void` to a `*mut T`, checking that it is not null, misaligned, or pointing to a region of memory that wraps around the address space.

(value: *mut c_void)

/// misaligned, or pointing to a region of memory that wraps around the address
/// space.
pub(crate) fn check_raw_pointer<T>(value: *mut c_void) -> Option<NonNull<T>> {
    if (value as usize).checked_add(size_of::<T>()).is_none()
        || (value as usize) % align_of::<T>() != 0
    {
        return None;
    }

    NonNull::new(value.cast())
}

/// Create a union value containing a default value in one of its arms.
///