imalsogreg commented on a change in pull request #6563:
URL: https://github.com/apache/incubator-tvm/pull/6563#discussion_r497168051
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File path: rust/tvm-rt/src/ndarray.rs
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@@ -184,28 +246,19 @@ impl NDArray {
/// let ctx = Context::cpu(0);
/// let mut ndarray = NDArray::empty(&mut shape, ctx,
DataType::from_str("int32").unwrap());
/// ndarray.copy_from_buffer(&mut data);
- /// assert_eq!(ndarray.shape(), Some(&mut shape[..]));
+ /// assert_eq!(ndarray.shape(), shape);
/// assert_eq!(ndarray.to_vec::<i32>().unwrap(), data);
/// ```
pub fn to_vec<T>(&self) -> Result<Vec<T>, NDArrayError> {
- if !self.shape().is_some() {
- return Err(NDArrayError::EmptyArray);
- }
- let earr = NDArray::empty(
- self.shape().ok_or(NDArrayError::MissingShape)?,
- Context::cpu(0),
- self.dtype(),
- );
- let target = self.copy_to_ndarray(earr)?;
- let arr = target.as_dltensor();
- let sz = self.size().ok_or(NDArrayError::MissingShape)?;
- let mut v: Vec<T> = Vec::with_capacity(sz * mem::size_of::<T>());
- unsafe {
- v.as_mut_ptr()
- .copy_from_nonoverlapping(arr.data as *const T, sz);
- v.set_len(sz);
- }
- Ok(v)
+ let n = self.size() / size_of::<T>();
Review comment:
Could a user ever request `T ~ ()`, or some other zero-sized item,
giving a divide-by-zero error?
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