Fixes #30065

Change-Id: I3d0fb03bab397548653d5f3b386cfe2980ac1030
Reviewed-on: https://go-review.googlesource.com/c/160830
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>