pitrou commented on a change in pull request #10907:
URL: https://github.com/apache/arrow/pull/10907#discussion_r687965362
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File path: cpp/src/arrow/compute/exec/key_hash.cc
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@@ -198,8 +198,10 @@ void Hashing::hash_varlen_helper(uint32_t length, const
uint8_t* key, uint32_t*
last_stripe[1] = last_stripe_base[1];
last_stripe[1] &= mask;
}
+ uint32_t lanes[4];
+ memcpy(&lanes, &last_stripe, sizeof(last_stripe));
Review comment:
Maybe add a comment as to why we're doing this (and mention the JIRA
issue id)?
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