a129840779
On arm64, the contents of R30 are saved in this 16-byte frame (when doing async preemption). But we don't scan that little frame. So any pointer that was in R30 will not get scanned. So the object it points to may get collected prematurely. Fixes #80188 The test here is pretty quick (~1/3 sec) and fails ~50% of the time. Change-Id: I46a7a6a25fabeb4f15dca96ee6fdd5e99d4c6323 Reviewed-on: https://go-review.googlesource.com/c/go/+/797521 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Keith Randall <khr@golang.org>
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