unix: align the getdents buffer getdents64 stores a 64-bit d_ino at the start of every entry, so the entries are aligned only if the buffer is. Go promises no alignment for a []byte, and sparc64 faults on the misaligned store rather than fixing it up, returning EFAULT. Buffers from make are already 8-aligned, so this is a no-op unless the caller passes a sub-slice. Updates golang/go#55000 Change-Id: I3724af7c4ef7debc4bdd9d0b1c3130c312094957 GitHub-Last-Rev: 2d416d91ae1f7ad56c32636521af5b2c61a567b2 GitHub-Pull-Request: golang/sys#291 Reviewed-on: https://go-review.googlesource.com/c/sys/+/822906 LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Kirill Kolyshkin <kolyshkin@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com>
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