Adapt pprof profile data downloaded from Parca to be on index position 1. This is needed because in the Go 1.20 release the compiler hard-codes this position. See: https://github.com/golang/go/issues/58292

pgofix.go

package main

import (
	"log"
	"os"

	"github.com/google/pprof/profile"
)

func main() {
	filename := os.Args[1]

	f, err := os.Open(filename)
	if err != nil {
		log.Fatal("open:", err)
	}

	p, err := profile.Parse(f)
	if err != nil {
		log.Fatal("could not parse profile: ", err)
	}

	p.SampleType = []*profile.ValueType{
		&profile.ValueType{
			Type: "fake",
			Unit: "fake",
		},
		p.SampleType[0],
	}
	for _, s := range p.Sample {
		s.Value = []int64{0, s.Value[0]}
	}

	f, err = os.Create(filename + ".out")
	if err != nil {
		log.Fatal("could not create CPU profile: ", err)
	}
	defer f.Close()

	if err := p.Write(f); err != nil {
		log.Fatal("could not write profile: ", err)
	}
}