commit c3fe3bab9905739fdda75301dab07a18c91731bd
author Raphael Taylor-Davies <1781103+tustvold@users.noreply.github.com> Thu Apr 22 14:09:59 2021 +0100
committer GitHub <noreply@github.com> Thu Apr 22 15:09:59 2021 +0200
tree fb5f238bfe1340288823af182aa154b0920ba161
parent 90d4f1d33e6644554c4db4592b8fa45f7c209356

Buffer::from_slice_ref set correct capacity (#18)

Fixed ARROW-12504

arrow/src/buffer/immutable.rs

diff --git a/arrow/src/buffer/immutable.rs b/arrow/src/buffer/immutable.rs
index cd6a2a3..f4aeae9 100644
--- a/arrow/src/buffer/immutable.rs
+++ b/arrow/src/buffer/immutable.rs
@@ -55,8 +55,8 @@
     /// Initializes a [Buffer] from a slice of items.
     pub fn from_slice_ref<U: ArrowNativeType, T: AsRef<[U]>>(items: &T) -> Self {
         let slice = items.as_ref();
-        let len = slice.len();
-        let mut buffer = MutableBuffer::with_capacity(len);
+        let capacity = slice.len() * std::mem::size_of::<U>();
+        let mut buffer = MutableBuffer::with_capacity(capacity);
         buffer.extend_from_slice(slice);
         buffer.into()
     }