Golang cmd/go/internal/test: "go help testflag" refers to legacy options of pprof

Go version

go version go1.25rc1 darwin/arm64

Output of go env in your module/workspace:

N/A

What did you do?

$ go1.25rc1 help testflag | sed -n '4,8p'                      
Several of the flags control profiling and write an execution profile
suitable for "go tool pprof"; run "go tool pprof -h" for more
information. The --alloc_space, --alloc_objects, and --show_bytes
options of pprof control how the information is presented.

$ go1.25rc1 tool pprof -h 2>&1 | grep -A8 'Legacy'
  Legacy convenience options:
   -inuse_space           Same as -sample_index=inuse_space
   -inuse_objects         Same as -sample_index=inuse_objects
   -alloc_space           Same as -sample_index=alloc_space
   -alloc_objects         Same as -sample_index=alloc_objects
   -total_delay           Same as -sample_index=delay
   -contentions           Same as -sample_index=contentions
   -mean_delay            Same as -mean -sample_index=delay

What did you see happen?

go help testflag mentions legacy options of pprof. Those options are even mentioned with double dash (--alloc_space) instead of single dash.

What did you expect to see?

I don't know. This paragraph is so outdated that I wonder if it is still relevant.

Comment From: gabyhelp

Related Issues

• cmd/pprof: doc about -alloc_space in Go 1.9 #20734 (closed)
• cmd/pprof: rejects inuse_space flag with debug=0 profiles #18230 (closed)

Related Code Changes

• runtime/pprof: introduce "allocs" profile

_{(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)}

Comment From: dmitshur

CC @golang/command-line, @cherrymui.