const buildIDSeparator = "/"

// actionID returns the action ID half of a build ID.
func actionID(buildID string) string {
	i := strings.Index(buildID, buildIDSeparator)
	if i < 0 {
		return buildID
	}
	return buildID[:i]
}

// contentID returns the content ID half of a build ID.
func contentID(buildID string) string {
	return buildID[strings.LastIndex(buildID, buildIDSeparator)+1:]
}

	telemetry.CountFlags("buildid/flag:", *flag.CommandLine)
	if flag.NArg() != 1 {
		usage()
	}

	file := flag.Arg(0)
	id, err := buildid.ReadFile(file)
	if err != nil {
		log.Fatal(err)
	}
	if !*wflag {
		fmt.Printf("%s\n", id)
		return
	}

	// Keep in sync with src/cmd/go/internal/work/buildid.go:updateBuildID

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

			var fileNames []string
			if m.BuildID != "" {
				fileNames = []string{filepath.Join(path, m.BuildID, baseName)}
				if matches, err := filepath.Glob(filepath.Join(path, m.BuildID, "*")); err == nil {
					fileNames = append(fileNames, matches...)
				}
				fileNames = append(fileNames, filepath.Join(path, noVolumeFile, m.BuildID)) // perf path format
				// Llvm buildid protocol: the first two characters of the build id

# check that PGO appears in build info
# N.B. we can't start the stdout check with -pgo because the script assumes that
# if the first arg starts with - it is a grep flag.
go version -m triv.exe
stdout 'build\s+-pgo=.*'${/}'prof'

# store the build ID
go list -export -json=BuildID -pgo=prof triv.go
stdout '"BuildID":' # check that output actually contains a build ID
cp stdout list.out

		// the binary's build ID, so it is the same hash used in
		// compiling and linking.
		// When compiling, we use actionID/actionID (instead of
		// actionID/contentID) as a temporary build ID to compute
		// the hash. Do the same here. (See buildid.go:useCache)
		// The build ID matters because it affects the overall hash
		// in the plugin's pseudo-import path returned below.

stale -cover m/example

# Collect build ID from for m/example built with -cover.
go list -cover -export -f '{{.BuildID}}' m/example
cp stdout $WORK/listbuildid.txt

# Now build the m/example binary with coverage.
go build -cover -o $WORK/m.exe m/example

# Ask for the binary build ID by running "go tool buildid".
go tool buildid $WORK/m.exe
cp stdout $WORK/rawtoolbuildid.txt

# Make sure that the two build IDs agree with respect to the

		}
		var mappings []*profile.Mapping
		id := uint64(1)
		parseProcSelfMaps(mmap, func(lo, hi, offset uint64, file, buildID string) {
			mappings = append(mappings, &profile.Mapping{
				ID:      id,
				Start:   lo,
				Limit:   hi,
				Offset:  offset,
				File:    file,
				BuildID: buildID,
			})
			id++
		})
		if len(mappings) < 2 {
			// It is possible for a binary to only have 1 executable

                    // report lastModified, but file size would change so we would detect it!
                    padding "-" * publishId

                    // add a random build id to make sure file changes
                    buildId "$buildId"
                }
            }
            component {
                if (printComponentGAV) {
                    group this.group
                    module this.module

// difficult/impossible to support reproducible builds. Since we try
// hard to maintain build reproducibility for Go, the APIs here
// compute a new UUID (based on the Go build ID) and write it to the
// final executable generated by the external linker.

import (
	"cmd/internal/notsha256"
	"debug/macho"
	"io"
	"os"
	"unsafe"
)

// uuidFromGoBuildId hashes the Go build ID and returns a slice of 16

			continue
		}
		if m.BuildID == "" {
			if u, err := url.Parse(m.File); err == nil && u.IsAbs() && strings.Contains(strings.ToLower(u.Scheme), "http") {
				// Skip mappings pointing to a source URL
				continue
			}
		}

		name := filepath.Base(m.File)
		if m.BuildID != "" {
			name += fmt.Sprintf(" (build ID %s)", m.BuildID)
		}