Fixes #34854

Change-Id: I7d6819c439e2fdfb19e181b202797fd5851eb002
Reviewed-on: https://go-review.googlesource.com/c/go/+/200839
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>