internal/fmtsort: sort the unsafe pointers in map
Currently storing keys that contain unsafe.
Pointer in a map could result inruntime panic when printing the map.
The root cause is that unsafe.Pointer is not comparable.
Fixes #42622.
Change-Id: Ie3bae7ee4945041843b66514de6227212a3da73e
GitHub-Last-Rev:
d12d41302e6118cb457aafb05f7aaed9df259b56
GitHub-Pull-Request: golang/go#42623
Reviewed-on: https://go-review.googlesource.com/c/go/+/270277
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>