paddyhoran commented on a change in pull request #7480:
URL: https://github.com/apache/arrow/pull/7480#discussion_r443242626
##########
File path: rust/arrow/src/memory.rs
##########
@@ -150,25 +150,32 @@ pub fn allocate_aligned(size: usize) -> *mut u8 {
}
pub unsafe fn free_aligned(ptr: *mut u8, size: usize) {
- if size != 0x00 && ptr != BYPASS_PTR.as_ptr() {
+ if ptr != BYPASS_PTR.as_ptr() {
std::alloc::dealloc(ptr, Layout::from_size_align_unchecked(size,
ALIGNMENT));
}
}
pub unsafe fn reallocate(ptr: *mut u8, old_size: usize, new_size: usize) ->
*mut u8 {
if ptr == BYPASS_PTR.as_ptr() {
- allocate_aligned(new_size)
- } else {
- let new_ptr = std::alloc::realloc(
- ptr,
- Layout::from_size_align_unchecked(old_size, ALIGNMENT),
- new_size,
- );
- if !new_ptr.is_null() && new_size > old_size {
- new_ptr.add(old_size).write_bytes(0, new_size - old_size);
- }
- new_ptr
+ return allocate_aligned(new_size);
+ }
+
+ if new_size == 0 {
+ free_aligned(ptr, old_size);
+ return BYPASS_PTR.as_ptr();
Review comment:
I guess we could start running valgrind in CI for Rust? I don't use
Valgrind but I created an
[issue](https://issues.apache.org/jira/browse/ARROW-9200) if anyone wants to
pick it up.
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