tree db9f9d177b9da6c5557411cd34fca67a78e2b108
parent ae03711892e26c3bb11f17a70a95db50703e7612
author Kazuho Oku <kazuhooku@gmail.com> 1592184800 +0900
committer Kazuho Oku <kazuhooku@gmail.com> 1592184800 +0900

to conserve stack space, use alloca for rare-case