felipecrv commented on code in PR #35565:
URL: https://github.com/apache/arrow/pull/35565#discussion_r1192607057
##########
cpp/src/arrow/util/align_util.cc:
##########
@@ -30,12 +32,120 @@ bool CheckAlignment(const Buffer& buffer, int64_t
alignment) {
return buffer.address() % alignment == 0;
}
-bool CheckAlignment(const ArrayData& array, int64_t alignment) {
- for (const auto& buffer : array.buffers) {
- if (buffer) {
- if (!CheckAlignment(*buffer, alignment)) return false;
+namespace {
+
+// Some buffers are frequently type-punned. For example, in an int32 array the
+// values buffer is frequently cast to int32_t*
Review Comment:
Can't we expect at least 8-byte alignment? :/
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