}

// GetBuildID returns the GNU build-ID for an ELF binary.
//
// If no build-ID was found but the binary was read without error, it returns
// (nil, nil).
func GetBuildID(f *elf.File) ([]byte, error) {
	findBuildID := func(notes []elfNote) ([]byte, error) {
		var buildID []byte
		for _, note := range notes {
			if note.Name == "GNU" && note.Type == noteTypeGNUBuildID {
				if buildID == nil {
					buildID = note.Desc

	Name() string

	// ObjAddr returns the objdump address corresponding to a runtime address.
	ObjAddr(addr uint64) (uint64, error)

	// BuildID returns the GNU build ID of the file, or an empty string.
	BuildID() string

	// SourceLine reports the source line information for a given
	// address in the file. Due to inlining, the source line information

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package buildid

import (
	"bytes"
	"crypto/sha256"
	"debug/elf"
	"encoding/binary"
	"internal/obscuretestdata"
	"os"
	"reflect"
	"strings"
	"testing"
)

const (

### `gradle` value

This value, nested in `createdBy`, must contain an object with the following values:

- `version`: The version of Gradle. A string
- `buildId`: The buildId for the Gradle instance. A string

### `variants` value

This value must contain an array with zero or more elements. Each element must be an object with the following values:

	size = size - (size % mapsizeRounding)
	key := mappingKey{
		size:   size,
		offset: m.Offset,
	}

	switch {
	case m.BuildID != "":
		key.buildIDOrFile = m.BuildID
	case m.File != "":
		key.buildIDOrFile = m.File
	default:
		// A mapping containing neither build ID nor file name is a fake mapping. A
		// key with empty buildIDOrFile is used for fake mappings so that they are

	tg.run("list", "-export", "-f", "{{.BuildID}}", "strings")
	buildID := strings.TrimSpace(tg.stdout.String())
	if buildID == "" {
		t.Fatalf(".BuildID with -export was empty")
	}

	tg.run("tool", "buildid", file)
	toolBuildID := strings.TrimSpace(tg.stdout.String())
	if buildID != toolBuildID {
		t.Fatalf(".BuildID with -export %q disagrees with 'go tool buildid' %q", buildID, toolBuildID)
	}
}

		ldflags = str.StringList("-Wl,-(", ldflags, "-Wl,-)")
	}

	if root.buildID != "" {
		// On systems that normally use gold or the GNU linker,
		// use the --build-id option to write a GNU build ID note.
		switch cfg.Goos {
		case "android", "dragonfly", "linux", "netbsd":
			ldflags = append(ldflags, fmt.Sprintf("-Wl,--build-id=0x%x", root.buildID))
		}
	}

	var rLibPath string
	if cfg.Goos == "aix" {

### `gradle` value

This value, nested in `createdBy`, must contain an object with the following values:

- `version`: The version of Gradle. A string
- `buildId`: optional. The buildId for the Gradle instance. A string

### `variants` value

This value must contain an array with zero or more elements. Each element must be an object with the following values:

	-aslr
		Enable ASLR for buildmode=c-shared on windows (default true).
	-bindnow
		Mark a dynamically linked ELF object for immediate function binding (default false).
	-buildid id
		Record id as Go toolchain build id.
	-buildmode mode
		Set build mode (default exe).
	-c
		Dump call graphs.
	-compressdwarf
		Compress DWARF if possible (default true).
	-cpuprofile file
		Write CPU profile to file.
	-d

    def fingerprinterRegistry = Stub(FileCollectionFingerprinterRegistry) {
        getFingerprinter(_) >> fingerprinter
    }
    def executionHistoryStore = Mock(ExecutionHistoryStore)
    def buildId = UniqueId.generate()

    def actionListener = Stub(TaskActionListener)
    def outputChangeListener = Stub(OutputChangeListener)
    def changeDetector = new DefaultExecutionStateChangeDetector()