cmd/vendor/github.com/google/pprof: refresh from upstream

Updating to commit fffc5831a499a958516664a34cb7ba2b9e228793
from github.com/google/pprof

Fixes #19380

Change-Id: I7a0c64101f42b494c4a469c41628374272eccf95
Reviewed-on: https://go-review.googlesource.com/46155
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/vendor/github.com/google/pprof/README.md

+[![Build Status](https://travis-ci.org/google/pprof.svg?branch=master)](https://travis-ci.org/google/pprof)
+[![codecov](https://codecov.io/gh/google/pprof/graph/badge.svg)](https://codecov.io/gh/google/pprof)
+
 # Introduction
 
 pprof is a tool for visualization and analysis of profiling data.
@@ -24,7 +27,7 @@ them through the use of the native binutils tools (addr2line and nm).
 
 Prerequisites:
 
-- Go development kit. Known to work with Go 1.5.
+- Go development kit. Requires Go 1.7 or newer.
   Follow [these instructions](http://golang.org/doc/code.html) to install the 
   go tool and set up GOPATH.
 
@@ -35,6 +38,10 @@ To build and install it, use the `go get` tool.
 
     go get github.com/google/pprof
 
+Remember to set GOPATH to the directory where you want pprof to be
+installed.  The binary will be in $GOPATH/bin and the sources under
+$GOPATH/src/github.com/google/pprof.
+
 # Basic usage
 
 pprof can read a profile from a file or directly from a server via http.

src/cmd/vendor/github.com/google/pprof/driver/driver.go

@@ -29,10 +29,10 @@ import (
 // manager. Then it generates a report formatted according to the
 // options selected through the flags package.
 func PProf(o *Options) error {
-	return internaldriver.PProf(o.InternalOptions())
+	return internaldriver.PProf(o.internalOptions())
 }
 
-func (o *Options) InternalOptions() *plugin.Options {
+func (o *Options) internalOptions() *plugin.Options {
 	var obj plugin.ObjTool
 	if o.Obj != nil {
 		obj = &internalObjTool{o.Obj}
@@ -273,9 +273,9 @@ type internalSymbolizer struct {
 }
 
 func (s *internalSymbolizer) Symbolize(mode string, srcs plugin.MappingSources, prof *profile.Profile) error {
-	isrcs := plugin.MappingSources{}
+	isrcs := MappingSources{}
 	for m, s := range srcs {
 		isrcs[m] = s
 	}
-	return s.Symbolize(mode, isrcs, prof)
+	return s.Symbolizer.Symbolize(mode, isrcs, prof)
 }

src/cmd/vendor/github.com/google/pprof/internal/binutils/disasm_test.go

@@ -73,7 +73,7 @@ func TestFindSymbols(t *testing.T) {
 
 func checkSymbol(got []*plugin.Sym, want []plugin.Sym) error {
 	if len(got) != len(want) {
-		return fmt.Errorf("unexpected number of symbols %d (want %d)\n", len(got), len(want))
+		return fmt.Errorf("unexpected number of symbols %d (want %d)", len(got), len(want))
 	}
 
 	for i, g := range got {
@@ -134,8 +134,6 @@ func TestFunctionAssembly(t *testing.T) {
 		},
 	}
 
-	const objdump = "testdata/wrapper/objdump"
-
 	for _, tc := range testcases {
 		insts, err := disassemble([]byte(tc.asm))
 		if err != nil {

src/cmd/vendor/github.com/google/pprof/internal/driver/commands.go

@@ -227,9 +227,6 @@ var pprofVariables = variables{
 	"functions": &variable{boolKind, "t", "granularity", helpText(
 		"Aggregate at the function level.",
 		"Takes into account the filename/lineno where the function was defined.")},
-	"functionnameonly": &variable{boolKind, "f", "granularity", helpText(
-		"Aggregate at the function level.",
-		"Ignores the filename/lineno where the function was defined.")},
 	"files": &variable{boolKind, "f", "granularity", "Aggregate at the file level."},
 	"lines": &variable{boolKind, "f", "granularity", "Aggregate at the source code line level."},
 	"addresses": &variable{boolKind, "f", "granularity", helpText(
@@ -471,7 +468,7 @@ func (vars variables) set(name, value string) error {
 	case boolKind:
 		var b bool
 		if b, err = stringToBool(value); err == nil {
-			if v.group != "" && b == false {
+			if v.group != "" && !b {
 				err = fmt.Errorf("%q can only be set to true", name)
 			}
 		}

src/cmd/vendor/github.com/google/pprof/internal/driver/driver.go

@@ -160,20 +160,20 @@ func applyCommandOverrides(cmd []string, v variables) variables {
 			v.set("nodecount", "80")
 		}
 	}
-	if trim == false {
+	if !trim {
 		v.set("nodecount", "0")
 		v.set("nodefraction", "0")
 		v.set("edgefraction", "0")
 	}
-	if focus == false {
+	if !focus {
 		v.set("focus", "")
 		v.set("ignore", "")
 	}
-	if tagfocus == false {
+	if !tagfocus {
 		v.set("tagfocus", "")
 		v.set("tagignore", "")
 	}
-	if hide == false {
+	if !hide {
 		v.set("hide", "")
 		v.set("show", "")
 	}
@@ -196,18 +196,13 @@ func aggregate(prof *profile.Profile, v variables) error {
 	case v["functions"].boolValue():
 		inlines = true
 		function = true
-		filename = true
 	case v["noinlines"].boolValue():
 		function = true
-		filename = true
 	case v["addressnoinlines"].boolValue():
 		function = true
 		filename = true
 		linenumber = true
 		address = true
-	case v["functionnameonly"].boolValue():
-		inlines = true
-		function = true
 	default:
 		return fmt.Errorf("unexpected granularity")
 	}

src/cmd/vendor/github.com/google/pprof/internal/driver/driver_focus.go

@@ -59,7 +59,7 @@ func applyFocus(prof *profile.Profile, v variables, ui plugin.UI) error {
 	if prunefrom != nil {
 		prof.PruneFrom(prunefrom)
 	}
-	return nil
+	return err
 }
 
 func compileRegexOption(name, value string, err error) (*regexp.Regexp, error) {

src/cmd/vendor/github.com/google/pprof/internal/driver/driver_test.go

@@ -16,8 +16,11 @@ package driver
 
 import (
 	"bytes"
+	"flag"
 	"fmt"
 	"io/ioutil"
+	"net"
+	_ "net/http/pprof"
 	"os"
 	"regexp"
 	"runtime"
@@ -32,6 +35,8 @@ import (
 	"github.com/google/pprof/profile"
 )
 
+var updateFlag = flag.Bool("update", false, "Update the golden files")
+
 func TestParse(t *testing.T) {
 	// Override weblist command to collect output in buffer
 	pprofCommands["weblist"].postProcess = nil
@@ -43,13 +48,12 @@ func TestParse(t *testing.T) {
 	savePath := os.Getenv("PPROF_BINARY_PATH")
 	os.Setenv("PPROF_BINARY_PATH", "/path/to")
 	defer os.Setenv("PPROF_BINARY_PATH", savePath)
-
 	testcase := []struct {
 		flags, source string
 	}{
 		{"text,functions,flat", "cpu"},
 		{"tree,addresses,flat,nodecount=4", "cpusmall"},
-		{"text,functions,flat", "unknown"},
+		{"text,functions,flat,nodecount=5,call_tree", "unknown"},
 		{"text,alloc_objects,flat", "heap_alloc"},
 		{"text,files,flat", "heap"},
 		{"text,inuse_objects,flat", "heap"},
@@ -59,8 +63,10 @@ func TestParse(t *testing.T) {
 		{"tree,lines,cum,focus=[24]00", "heap"},
 		{"tree,relative_percentages,cum,focus=[24]00", "heap"},
 		{"callgrind", "cpu"},
+		{"callgrind,call_tree", "cpu"},
 		{"callgrind", "heap"},
 		{"dot,functions,flat", "cpu"},
+		{"dot,functions,flat,call_tree", "cpu"},
 		{"dot,lines,flat,focus=[12]00", "heap"},
 		{"dot,addresses,flat,ignore=[X3]002,focus=[X1]000", "contention"},
 		{"dot,files,cum", "contention"},
@@ -99,6 +105,7 @@ func TestParse(t *testing.T) {
 		if err != nil {
 			t.Errorf("cannot create tempfile: %v", err)
 		}
+		defer os.Remove(protoTempFile.Name())
 		defer protoTempFile.Close()
 		f.strings["output"] = protoTempFile.Name()
 
@@ -124,6 +131,7 @@ func TestParse(t *testing.T) {
 		if err != nil {
 			t.Errorf("cannot create tempfile: %v", err)
 		}
+		defer os.Remove(outputTempFile.Name())
 		defer outputTempFile.Close()
 		f.strings["output"] = outputTempFile.Name()
 		f.args = []string{protoTempFile.Name()}
@@ -180,6 +188,12 @@ func TestParse(t *testing.T) {
 				t.Fatalf("diff %s %v", solution, err)
 			}
 			t.Errorf("%s\n%s\n", solution, d)
+			if *updateFlag {
+				err := ioutil.WriteFile(solution, b, 0644)
+				if err != nil {
+					t.Errorf("failed to update the solution file %q: %v", solution, err)
+				}
+			}
 		}
 	}
 }
@@ -214,14 +228,19 @@ func addFlags(f *testFlags, flags []string) {
 	}
 }
 
+func testSourceURL(port int) string {
+	return fmt.Sprintf("http://%s/", net.JoinHostPort(testSourceAddress, strconv.Itoa(port)))
+}
+
 // solutionFilename returns the name of the solution file for the test
 func solutionFilename(source string, f *testFlags) string {
-	name := []string{"pprof", strings.TrimPrefix(source, "http://host:8000/")}
+	name := []string{"pprof", strings.TrimPrefix(source, testSourceURL(8000))}
 	name = addString(name, f, []string{"flat", "cum"})
 	name = addString(name, f, []string{"functions", "files", "lines", "addresses"})
 	name = addString(name, f, []string{"inuse_space", "inuse_objects", "alloc_space", "alloc_objects"})
 	name = addString(name, f, []string{"relative_percentages"})
 	name = addString(name, f, []string{"seconds"})
+	name = addString(name, f, []string{"call_tree"})
 	name = addString(name, f, []string{"text", "tree", "callgrind", "dot", "svg", "tags", "dot", "traces", "disasm", "peek", "weblist", "topproto", "comments"})
 	if f.strings["focus"] != "" || f.strings["tagfocus"] != "" {
 		name = append(name, "focus")
@@ -345,9 +364,6 @@ func baseFlags() testFlags {
 	}
 }
 
-type testProfile struct {
-}
-
 const testStart = 0x1000
 const testOffset = 0x5000
 
@@ -355,7 +371,6 @@ type testFetcher struct{}
 
 func (testFetcher) Fetch(s string, d, t time.Duration) (*profile.Profile, string, error) {
 	var p *profile.Profile
-	s = strings.TrimPrefix(s, "http://host:8000/")
 	switch s {
 	case "cpu", "unknown":
 		p = cpuProfile()
@@ -373,17 +388,10 @@ func (testFetcher) Fetch(s string, d, t time.Duration) (*profile.Profile, string
 		p = contentionProfile()
 	case "symbolz":
 		p = symzProfile()
-	case "http://host2/symbolz":
-		p = symzProfile()
-		p.Mapping[0].Start += testOffset
-		p.Mapping[0].Limit += testOffset
-		for i := range p.Location {
-			p.Location[i].Address += testOffset
-		}
 	default:
 		return nil, "", fmt.Errorf("unexpected source: %s", s)
 	}
-	return p, s, nil
+	return p, testSourceURL(8000) + s, nil
 }
 
 type testSymbolizer struct{}
@@ -406,28 +414,32 @@ func (testSymbolizeDemangler) Symbolize(_ string, _ plugin.MappingSources, p *pr
 func testFetchSymbols(source, post string) ([]byte, error) {
 	var buf bytes.Buffer
 
-	if source == "http://host2/symbolz" {
+	switch source {
+	case testSourceURL(8000) + "symbolz":
 		for _, address := range strings.Split(post, "+") {
 			a, _ := strconv.ParseInt(address, 0, 64)
 			fmt.Fprintf(&buf, "%v\t", address)
-			if a-testStart < testOffset {
+			if a-testStart > testOffset {
 				fmt.Fprintf(&buf, "wrong_source_%v_", address)
 				continue
 			}
-			fmt.Fprintf(&buf, "%#x\n", a-testStart-testOffset)
+			fmt.Fprintf(&buf, "%#x\n", a-testStart)
 		}
 		return buf.Bytes(), nil
-	}
+	case testSourceURL(8001) + "symbolz":
 		for _, address := range strings.Split(post, "+") {
 			a, _ := strconv.ParseInt(address, 0, 64)
 			fmt.Fprintf(&buf, "%v\t", address)
-		if a-testStart > testOffset {
+			if a-testStart < testOffset {
 				fmt.Fprintf(&buf, "wrong_source_%v_", address)
 				continue
 			}
-		fmt.Fprintf(&buf, "%#x\n", a-testStart)
+			fmt.Fprintf(&buf, "%#x\n", a-testStart-testOffset)
 		}
 		return buf.Bytes(), nil
+	default:
+		return nil, fmt.Errorf("unexpected source: %s", source)
+	}
 }
 
 type testSymbolzSymbolizer struct{}
@@ -543,32 +555,32 @@ func cpuProfile() *profile.Profile {
 				Location: []*profile.Location{cpuL[0], cpuL[1], cpuL[2]},
 				Value:    []int64{1000, 1000},
 				Label: map[string][]string{
-					"key1": []string{"tag1"},
-					"key2": []string{"tag1"},
+					"key1": {"tag1"},
+					"key2": {"tag1"},
 				},
 			},
 			{
 				Location: []*profile.Location{cpuL[0], cpuL[3]},
 				Value:    []int64{100, 100},
 				Label: map[string][]string{
-					"key1": []string{"tag2"},
-					"key3": []string{"tag2"},
+					"key1": {"tag2"},
+					"key3": {"tag2"},
 				},
 			},
 			{
 				Location: []*profile.Location{cpuL[1], cpuL[4]},
 				Value:    []int64{10, 10},
 				Label: map[string][]string{
-					"key1": []string{"tag3"},
-					"key2": []string{"tag2"},
+					"key1": {"tag3"},
+					"key2": {"tag2"},
 				},
 			},
 			{
 				Location: []*profile.Location{cpuL[2]},
 				Value:    []int64{10, 10},
 				Label: map[string][]string{
-					"key1": []string{"tag4"},
-					"key2": []string{"tag1"},
+					"key1": {"tag4"},
+					"key2": {"tag1"},
 				},
 			},
 		},
@@ -745,28 +757,28 @@ func heapProfile() *profile.Profile {
 				Location: []*profile.Location{heapL[0], heapL[1], heapL[2]},
 				Value:    []int64{10, 1024000},
 				NumLabel: map[string][]int64{
-					"bytes": []int64{102400},
+					"bytes": {102400},
 				},
 			},
 			{
 				Location: []*profile.Location{heapL[0], heapL[3]},
 				Value:    []int64{20, 4096000},
 				NumLabel: map[string][]int64{
-					"bytes": []int64{204800},
+					"bytes": {204800},
 				},
 			},
 			{
 				Location: []*profile.Location{heapL[1], heapL[4]},
 				Value:    []int64{40, 65536000},
 				NumLabel: map[string][]int64{
-					"bytes": []int64{1638400},
+					"bytes": {1638400},
 				},
 			},
 			{
 				Location: []*profile.Location{heapL[2]},
 				Value:    []int64{80, 32768000},
 				NumLabel: map[string][]int64{
-					"bytes": []int64{409600},
+					"bytes": {409600},
 				},
 			},
 		},
@@ -977,13 +989,36 @@ func TestTagFilter(t *testing.T) {
 	}
 }
 
+type testSymbolzMergeFetcher struct{}
+
+func (testSymbolzMergeFetcher) Fetch(s string, d, t time.Duration) (*profile.Profile, string, error) {
+	var p *profile.Profile
+	switch s {
+	case testSourceURL(8000) + "symbolz":
+		p = symzProfile()
+	case testSourceURL(8001) + "symbolz":
+		p = symzProfile()
+		p.Mapping[0].Start += testOffset
+		p.Mapping[0].Limit += testOffset
+		for i := range p.Location {
+			p.Location[i].Address += testOffset
+		}
+	default:
+		return nil, "", fmt.Errorf("unexpected source: %s", s)
+	}
+	return p, s, nil
+}
+
 func TestSymbolzAfterMerge(t *testing.T) {
 	baseVars := pprofVariables
 	pprofVariables = baseVars.makeCopy()
 	defer func() { pprofVariables = baseVars }()
 
 	f := baseFlags()
-	f.args = []string{"symbolz", "http://host2/symbolz"}
+	f.args = []string{
+		testSourceURL(8000) + "symbolz",
+		testSourceURL(8001) + "symbolz",
+	}
 
 	o := setDefaults(nil)
 	o.Flagset = f
@@ -997,7 +1032,7 @@ func TestSymbolzAfterMerge(t *testing.T) {
 		t.Fatalf("parseFlags returned command %v, want [proto]", cmd)
 	}
 
-	o.Fetch = testFetcher{}
+	o.Fetch = testSymbolzMergeFetcher{}
 	o.Sym = testSymbolzSymbolizer{}
 	p, err := fetchProfiles(src, o)
 	if err != nil {
@@ -1028,10 +1063,10 @@ func (m *mockObjTool) Disasm(file string, start, end uint64) ([]plugin.Inst, err
 	switch start {
 	case 0x1000:
 		return []plugin.Inst{
-			{Addr: 0x1000, Text: "instruction one"},
-			{Addr: 0x1001, Text: "instruction two"},
-			{Addr: 0x1002, Text: "instruction three"},
-			{Addr: 0x1003, Text: "instruction four"},
+			{Addr: 0x1000, Text: "instruction one", File: "file1000.src", Line: 1},
+			{Addr: 0x1001, Text: "instruction two", File: "file1000.src", Line: 1},
+			{Addr: 0x1002, Text: "instruction three", File: "file1000.src", Line: 2},
+			{Addr: 0x1003, Text: "instruction four", File: "file1000.src", Line: 1},
 		}, nil
 	case 0x3000:
 		return []plugin.Inst{
@@ -1046,7 +1081,7 @@ func (m *mockObjTool) Disasm(file string, start, end uint64) ([]plugin.Inst, err
 }
 
 type mockFile struct {
-	name, buildId string
+	name, buildID string
 	base          uint64
 }
 
@@ -1062,7 +1097,7 @@ func (m *mockFile) Base() uint64 {
 
 // BuildID returns the GNU build ID of the file, or an empty string.
 func (m *mockFile) BuildID() string {
-	return m.buildId
+	return m.buildID
 }
 
 // SourceLine reports the source line information for a given

src/cmd/vendor/github.com/google/pprof/internal/driver/fetch.go

@@ -242,6 +242,8 @@ func setTmpDir(ui plugin.UI) (string, error) {
 	return "", fmt.Errorf("failed to identify temp dir")
 }
 
+const testSourceAddress = "pproftest.local"
+
 // grabProfile fetches a profile. Returns the profile, sources for the
 // profile mappings, a bool indicating if the profile was fetched
 // remotely, and an error.
@@ -276,6 +278,11 @@ func grabProfile(s *source, source string, scale float64, fetcher plugin.Fetcher
 	if src != "" {
 		msrc = collectMappingSources(p, src)
 		remote = true
+		if strings.HasPrefix(src, "http://"+testSourceAddress) {
+			// Treat test inputs as local to avoid saving
+			// testcase profiles during driver testing.
+			remote = false
+		}
 	}
 	return
 }
@@ -366,9 +373,6 @@ mapping:
 			}
 		}
 	}
-	// Replace executable filename/buildID with the overrides from source.
-	// Assumes the executable is the first Mapping entry.
-	if execName, buildID := s.ExecName, s.BuildID; execName != "" || buildID != "" {
 	if len(p.Mapping) == 0 {
 		// If there are no mappings, add a fake mapping to attempt symbolization.
 		// This is useful for some profiles generated by the golang runtime, which
@@ -380,6 +384,9 @@ mapping:
 			l.Mapping = m
 		}
 	}
+	// Replace executable filename/buildID with the overrides from source.
+	// Assumes the executable is the first Mapping entry.
+	if execName, buildID := s.ExecName, s.BuildID; execName != "" || buildID != "" {
 		m := p.Mapping[0]
 		if execName != "" {
 			m.File = execName

src/cmd/vendor/github.com/google/pprof/internal/driver/fetch_test.go

@@ -15,8 +15,15 @@
 package driver
 
 import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/pem"
 	"fmt"
 	"io/ioutil"
+	"math/big"
 	"net/http"
 	"net/url"
 	"os"
@@ -24,11 +31,14 @@ import (
 	"reflect"
 	"regexp"
 	"runtime"
+	"strings"
 	"testing"
 	"time"
 
+	"github.com/google/pprof/internal/binutils"
 	"github.com/google/pprof/internal/plugin"
 	"github.com/google/pprof/internal/proftest"
+	"github.com/google/pprof/internal/symbolizer"
 	"github.com/google/pprof/profile"
 )
 
@@ -165,6 +175,8 @@ func TestFetch(t *testing.T) {
 	const path = "testdata/"
 
 	// Intercept http.Get calls from HTTPFetcher.
+	savedHTTPGet := httpGet
+	defer func() { httpGet = savedHTTPGet }()
 	httpGet = stubHTTPGet
 
 	type testcase struct {
@@ -227,3 +239,108 @@ func stubHTTPGet(source string, _ time.Duration) (*http.Response, error) {
 	c := &http.Client{Transport: t}
 	return c.Get("file:///" + file)
 }
+
+func TestHttpsInsecure(t *testing.T) {
+
+	if runtime.GOOS == "nacl" {
+		t.Skip("test assumes tcp available")
+	}
+
+	baseVars := pprofVariables
+	pprofVariables = baseVars.makeCopy()
+	defer func() { pprofVariables = baseVars }()
+
+	tlsConfig := &tls.Config{Certificates: []tls.Certificate{selfSignedCert(t)}}
+
+	l, err := tls.Listen("tcp", "localhost:0", tlsConfig)
+	if err != nil {
+		t.Fatalf("net.Listen: got error %v, want no error", err)
+	}
+
+	donec := make(chan error, 1)
+	go func(donec chan<- error) {
+		donec <- http.Serve(l, nil)
+	}(donec)
+	defer func() {
+		if got, want := <-donec, "use of closed"; !strings.Contains(got.Error(), want) {
+			t.Fatalf("Serve got error %v, want %q", got, want)
+		}
+	}()
+	defer l.Close()
+
+	go func() {
+		deadline := time.Now().Add(5 * time.Second)
+		for time.Now().Before(deadline) {
+			// Simulate a hotspot function.
+		}
+	}()
+
+	outputTempFile, err := ioutil.TempFile("", "profile_output")
+	if err != nil {
+		t.Fatalf("Failed to create tempfile: %v", err)
+	}
+	defer os.Remove(outputTempFile.Name())
+	defer outputTempFile.Close()
+
+	address := "https+insecure://" + l.Addr().String() + "/debug/pprof/profile"
+	s := &source{
+		Sources:   []string{address},
+		Seconds:   10,
+		Timeout:   10,
+		Symbolize: "remote",
+	}
+	o := &plugin.Options{
+		Obj: &binutils.Binutils{},
+		UI:  &proftest.TestUI{T: t, IgnoreRx: "Saved profile in"},
+	}
+	o.Sym = &symbolizer.Symbolizer{Obj: o.Obj, UI: o.UI}
+	p, err := fetchProfiles(s, o)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(p.SampleType) == 0 {
+		t.Fatalf("grabProfile(%s) got empty profile: len(p.SampleType)==0", address)
+	}
+	if err := checkProfileHasFunction(p, "TestHttpsInsecure"); err != nil {
+		t.Fatalf("grabProfile(%s) %v", address, err)
+	}
+}
+
+func checkProfileHasFunction(p *profile.Profile, fname string) error {
+	for _, f := range p.Function {
+		if strings.Contains(f.Name, fname) {
+			return nil
+		}
+	}
+	return fmt.Errorf("got %s, want function %q", p.String(), fname)
+}
+
+func selfSignedCert(t *testing.T) tls.Certificate {
+	privKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		t.Fatalf("failed to generate private key: %v", err)
+	}
+	b, err := x509.MarshalECPrivateKey(privKey)
+	if err != nil {
+		t.Fatalf("failed to marshal private key: %v", err)
+	}
+	bk := pem.EncodeToMemory(&pem.Block{Type: "EC PRIVATE KEY", Bytes: b})
+
+	tmpl := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		NotBefore:    time.Now(),
+		NotAfter:     time.Now().Add(10 * time.Minute),
+	}
+
+	b, err = x509.CreateCertificate(rand.Reader, &tmpl, &tmpl, privKey.Public(), privKey)
+	if err != nil {
+		t.Fatalf("failed to create cert: %v", err)
+	}
+	bc := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: b})
+
+	cert, err := tls.X509KeyPair(bc, bk)
+	if err != nil {
+		t.Fatalf("failed to create TLS key pair: %v", err)
+	}
+	return cert
+}

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.call_tree.callgrind

+positions: instr line
+events: cpu(ms)
+
+ob=(1) /path/to/testbinary
+fl=(1) testdata/file1000.src
+fn=(1) line1000
+0x1000 1 1000
+* 1 100
+
+ob=(1)
+fl=(2) testdata/file2000.src
+fn=(2) line2001
++4096 9 10
+
+ob=(1)
+fl=(3) testdata/file3000.src
+fn=(3) line3002
++4096 2 10
+cfl=(2)
+cfn=(4) line2000 [1/2]
+calls=0 * 4
+* * 1000
+
+ob=(1)
+fl=(2)
+fn=(5) line2000
+-4096 4 0
+cfl=(2)
+cfn=(6) line2001 [2/2]
+calls=0 -4096 9
+* * 1000
+* 4 0
+cfl=(2)
+cfn=(7) line2001 [1/2]
+calls=0 * 9
+* * 10
+
+ob=(1)
+fl=(2)
+fn=(2)
+* 9 0
+cfl=(1)
+cfn=(8) line1000 [1/2]
+calls=0 -4096 1
+* * 1000
+
+ob=(1)
+fl=(3)
+fn=(9) line3000
++4096 6 0
+cfl=(3)
+cfn=(10) line3001 [1/2]
+calls=0 +4096 5
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(11) line3001
+* 5 0
+cfl=(3)
+cfn=(12) line3002 [1/2]
+calls=0 * 2
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(9)
++1 9 0
+cfl=(3)
+cfn=(13) line3001 [2/2]
+calls=0 +1 8
+* * 100
+
+ob=(1)
+fl=(3)
+fn=(11)
+* 8 0
+cfl=(1)
+cfn=(14) line1000 [2/2]
+calls=0 -8193 1
+* * 100
+
+ob=(1)
+fl=(3)
+fn=(9)
++1 9 0
+cfl=(3)
+cfn=(15) line3002 [2/2]
+calls=0 +1 5
+* * 10
+
+ob=(1)
+fl=(3)
+fn=(3)
+* 5 0
+cfl=(2)
+cfn=(16) line2000 [2/2]
+calls=0 -4098 4
+* * 10

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.addresses.disasm

@@ -2,9 +2,9 @@ Total: 1.12s
 ROUTINE ======================== line1000
      1.10s      1.10s (flat, cum) 98.21% of Total
      1.10s      1.10s       1000: instruction one                         ;line1000 file1000.src:1
-         .          .       1001: instruction two
-         .          .       1002: instruction three
-         .          .       1003: instruction four
+         .          .       1001: instruction two                         ;file1000.src:1
+         .          .       1002: instruction three                       ;file1000.src:2
+         .          .       1003: instruction four                        ;file1000.src:1
 ROUTINE ======================== line3000
       10ms      1.12s (flat, cum)   100% of Total
       10ms      1.01s       3000: instruction one                         ;line3000 file3000.src:6

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.addresses.weblist

@@ -2,6 +2,7 @@
 <!DOCTYPE html>
 <html>
 <head>
+<meta charset="UTF-8">
 <title>Pprof listing</title>
 <style type="text/css">
 body {
@@ -70,15 +71,17 @@ Duration: 10s, Total samples = 1.12s (11.20%)<br>Total: 1.12s</div><h1>line1000<
 <pre onClick="pprof_toggle_asm(event)">
   Total:       1.10s      1.10s (flat, cum) 98.21%
 <span class=line>      1</span> <span class=deadsrc>       1.10s      1.10s line1 </span><span class=asm>               1.10s      1.10s     1000: instruction one                                  <span class=disasmloc>file1000.src:1</span>
-                   .          .     1001: instruction two                                  <span class=disasmloc></span>
-                   .          .     1002: instruction three                                <span class=disasmloc></span>
-                   .          .     1003: instruction four                                 <span class=disasmloc></span>
+                   .          .     1001: instruction two                                  <span class=disasmloc>file1000.src:1</span>
+                                       ⋮
+                   .          .     1003: instruction four                                 <span class=disasmloc>file1000.src:1</span>
+</span>
+<span class=line>      2</span> <span class=deadsrc>           .          . line2 </span><span class=asm>                   .          .     1002: instruction three                                <span class=disasmloc>file1000.src:2</span>
 </span>
-<span class=line>      2</span> <span class=nop>           .          . line2 </span>
 <span class=line>      3</span> <span class=nop>           .          . line3 </span>
 <span class=line>      4</span> <span class=nop>           .          . line4 </span>
 <span class=line>      5</span> <span class=nop>           .          . line5 </span>
 <span class=line>      6</span> <span class=nop>           .          . line6 </span>
+<span class=line>      7</span> <span class=nop>           .          . line7 </span>
 </pre>
 <h1>line3000</h1>testdata/file3000.src
 <pre onClick="pprof_toggle_asm(event)">

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.call_tree.dot

+digraph "testbinary" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "File: testbinary" [shape=box fontsize=16 label="File: testbinary\lType: cpu\lDuration: 10s, Total samples = 1.12s (11.20%)\lShowing nodes accounting for 1.11s, 99.11% of 1.12s total\lDropped 3 nodes (cum <= 0.06s)\l"] }
+N1 [label="line1000\n1s (89.29%)" fontsize=24 shape=box tooltip="line1000 (1s)" color="#b20500" fillcolor="#edd6d5"]
+N1_0 [label = "key1:tag1\nkey2:tag1" fontsize=8 shape=box3d tooltip="1s"]
+N1 -> N1_0 [label=" 1s" weight=100 tooltip="1s" labeltooltip="1s"]
+N2 [label="line3000\n0 of 1.12s (100%)" fontsize=8 shape=box tooltip="line3000 (1.12s)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line3001\n0 of 1.11s (99.11%)" fontsize=8 shape=box tooltip="line3001 (1.11s)" color="#b20000" fillcolor="#edd5d5"]
+N4 [label="line1000\n0.10s (8.93%)" fontsize=14 shape=box tooltip="line1000 (0.10s)" color="#b28b62" fillcolor="#ede8e2"]
+N4_0 [label = "key1:tag2\nkey3:tag2" fontsize=8 shape=box3d tooltip="0.10s"]
+N4 -> N4_0 [label=" 0.10s" weight=100 tooltip="0.10s" labeltooltip="0.10s"]
+N5 [label="line3002\n0.01s (0.89%)\nof 1.01s (90.18%)" fontsize=10 shape=box tooltip="line3002 (1.01s)" color="#b20500" fillcolor="#edd6d5"]
+N6 [label="line2000\n0 of 1s (89.29%)" fontsize=8 shape=box tooltip="line2000 (1s)" color="#b20500" fillcolor="#edd6d5"]
+N7 [label="line2001\n0 of 1s (89.29%)" fontsize=8 shape=box tooltip="line2001 (1s)" color="#b20500" fillcolor="#edd6d5"]
+N2 -> N3 [label=" 1.11s\n (inline)" weight=100 penwidth=5 color="#b20000" tooltip="line3000 -> line3001 (1.11s)" labeltooltip="line3000 -> line3001 (1.11s)"]
+N3 -> N5 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line3001 -> line3002 (1.01s)" labeltooltip="line3001 -> line3002 (1.01s)"]
+N6 -> N7 [label=" 1s\n (inline)" weight=90 penwidth=5 color="#b20500" tooltip="line2000 -> line2001 (1s)" labeltooltip="line2000 -> line2001 (1s)"]
+N7 -> N1 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line2001 -> line1000 (1s)" labeltooltip="line2001 -> line1000 (1s)"]
+N5 -> N6 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line3002 -> line2000 (1s)" labeltooltip="line3002 -> line2000 (1s)"]
+N3 -> N4 [label=" 0.10s" weight=9 color="#b28b62" tooltip="line3001 -> line1000 (0.10s)" labeltooltip="line3001 -> line1000 (0.10s)"]
+}

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.dot

 digraph "testbinary" {
 node [style=filled fillcolor="#f8f8f8"]
 subgraph cluster_L { "File: testbinary" [shape=box fontsize=16 label="File: testbinary\lType: cpu\lDuration: 10s, Total samples = 1.12s (11.20%)\lShowing nodes accounting for 1.12s, 100% of 1.12s total\l"] }
-N1 [label="line1000\nfile1000.src\n1.10s (98.21%)" fontsize=24 shape=box tooltip="line1000 testdata/file1000.src (1.10s)" color="#b20000" fillcolor="#edd5d5"]
+N1 [label="line1000\n1.10s (98.21%)" fontsize=24 shape=box tooltip="line1000 (1.10s)" color="#b20000" fillcolor="#edd5d5"]
 N1_0 [label = "key1:tag1\nkey2:tag1" fontsize=8 shape=box3d tooltip="1s"]
 N1 -> N1_0 [label=" 1s" weight=100 tooltip="1s" labeltooltip="1s"]
 N1_1 [label = "key1:tag2\nkey3:tag2" fontsize=8 shape=box3d tooltip="0.10s"]
 N1 -> N1_1 [label=" 0.10s" weight=100 tooltip="0.10s" labeltooltip="0.10s"]
-N2 [label="line3000\nfile3000.src\n0 of 1.12s (100%)" fontsize=8 shape=box tooltip="line3000 testdata/file3000.src (1.12s)" color="#b20000" fillcolor="#edd5d5"]
-N3 [label="line3001\nfile3000.src\n0 of 1.11s (99.11%)" fontsize=8 shape=box tooltip="line3001 testdata/file3000.src (1.11s)" color="#b20000" fillcolor="#edd5d5"]
-N4 [label="line3002\nfile3000.src\n0.01s (0.89%)\nof 1.02s (91.07%)" fontsize=10 shape=box tooltip="line3002 testdata/file3000.src (1.02s)" color="#b20400" fillcolor="#edd6d5"]
-N5 [label="line2001\nfile2000.src\n0.01s (0.89%)\nof 1.01s (90.18%)" fontsize=10 shape=box tooltip="line2001 testdata/file2000.src (1.01s)" color="#b20500" fillcolor="#edd6d5"]
-N6 [label="line2000\nfile2000.src\n0 of 1.01s (90.18%)" fontsize=8 shape=box tooltip="line2000 testdata/file2000.src (1.01s)" color="#b20500" fillcolor="#edd6d5"]
-N2 -> N3 [label=" 1.11s\n (inline)" weight=100 penwidth=5 color="#b20000" tooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (1.11s)" labeltooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (1.11s)"]
-N6 -> N5 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line2000 testdata/file2000.src -> line2001 testdata/file2000.src (1.01s)" labeltooltip="line2000 testdata/file2000.src -> line2001 testdata/file2000.src (1.01s)"]
-N3 -> N4 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line3001 testdata/file3000.src -> line3002 testdata/file3000.src (1.01s)" labeltooltip="line3001 testdata/file3000.src -> line3002 testdata/file3000.src (1.01s)"]
-N4 -> N6 [label=" 1.01s" weight=91 penwidth=5 color="#b20500" tooltip="line3002 testdata/file3000.src -> line2000 testdata/file2000.src (1.01s)" labeltooltip="line3002 testdata/file3000.src -> line2000 testdata/file2000.src (1.01s)"]
-N5 -> N1 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line2001 testdata/file2000.src -> line1000 testdata/file1000.src (1s)" labeltooltip="line2001 testdata/file2000.src -> line1000 testdata/file1000.src (1s)"]
-N3 -> N1 [label=" 0.10s" weight=9 color="#b28b62" tooltip="line3001 testdata/file3000.src -> line1000 testdata/file1000.src (0.10s)" labeltooltip="line3001 testdata/file3000.src -> line1000 testdata/file1000.src (0.10s)"]
+N2 [label="line3000\n0 of 1.12s (100%)" fontsize=8 shape=box tooltip="line3000 (1.12s)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line3001\n0 of 1.11s (99.11%)" fontsize=8 shape=box tooltip="line3001 (1.11s)" color="#b20000" fillcolor="#edd5d5"]
+N4 [label="line3002\n0.01s (0.89%)\nof 1.02s (91.07%)" fontsize=10 shape=box tooltip="line3002 (1.02s)" color="#b20400" fillcolor="#edd6d5"]
+N5 [label="line2001\n0.01s (0.89%)\nof 1.01s (90.18%)" fontsize=10 shape=box tooltip="line2001 (1.01s)" color="#b20500" fillcolor="#edd6d5"]
+N6 [label="line2000\n0 of 1.01s (90.18%)" fontsize=8 shape=box tooltip="line2000 (1.01s)" color="#b20500" fillcolor="#edd6d5"]
+N2 -> N3 [label=" 1.11s\n (inline)" weight=100 penwidth=5 color="#b20000" tooltip="line3000 -> line3001 (1.11s)" labeltooltip="line3000 -> line3001 (1.11s)"]
+N6 -> N5 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line2000 -> line2001 (1.01s)" labeltooltip="line2000 -> line2001 (1.01s)"]
+N3 -> N4 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line3001 -> line3002 (1.01s)" labeltooltip="line3001 -> line3002 (1.01s)"]
+N4 -> N6 [label=" 1.01s" weight=91 penwidth=5 color="#b20500" tooltip="line3002 -> line2000 (1.01s)" labeltooltip="line3002 -> line2000 (1.01s)"]
+N5 -> N1 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line2001 -> line1000 (1s)" labeltooltip="line2001 -> line1000 (1s)"]
+N3 -> N1 [label=" 0.10s" weight=9 color="#b28b62" tooltip="line3001 -> line1000 (0.10s)" labeltooltip="line3001 -> line1000 (0.10s)"]
 }

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.text

 Showing nodes accounting for 1.12s, 100% of 1.12s total
       flat  flat%   sum%        cum   cum%
-     1.10s 98.21% 98.21%      1.10s 98.21%  line1000 testdata/file1000.src
-     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 testdata/file2000.src (inline)
-     0.01s  0.89%   100%      1.02s 91.07%  line3002 testdata/file3000.src (inline)
-         0     0%   100%      1.01s 90.18%  line2000 testdata/file2000.src
-         0     0%   100%      1.12s   100%  line3000 testdata/file3000.src
-         0     0%   100%      1.11s 99.11%  line3001 testdata/file3000.src (inline)
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 (inline)
+     0.01s  0.89%   100%      1.02s 91.07%  line3002 (inline)
+         0     0%   100%      1.01s 90.18%  line2000
+         0     0%   100%      1.12s   100%  line3000
+         0     0%   100%      1.11s 99.11%  line3001 (inline)

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.peek

@@ -2,12 +2,12 @@ Showing nodes accounting for 1.12s, 100% of 1.12s total
 ----------------------------------------------------------+-------------
       flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
 ----------------------------------------------------------+-------------
-                                             1.01s   100% |   line2000 testdata/file2000.src (inline)
-     0.01s  0.89%  0.89%      1.01s 90.18%                | line2001 testdata/file2000.src
-                                                1s 99.01% |   line1000 testdata/file1000.src
-----------------------------------------------------------+-------------
-                                             1.11s   100% |   line3000 testdata/file3000.src (inline)
-         0     0%  0.89%      1.11s 99.11%                | line3001 testdata/file3000.src
-                                             1.01s 90.99% |   line3002 testdata/file3000.src (inline)
-                                             0.10s  9.01% |   line1000 testdata/file1000.src
+                                             1.01s   100% |   line2000 (inline)
+     0.01s  0.89%  0.89%      1.01s 90.18%                | line2001
+                                                1s 99.01% |   line1000
+----------------------------------------------------------+-------------
+                                             1.11s   100% |   line3000 (inline)
+         0     0%  0.89%      1.11s 99.11%                | line3001
+                                             1.01s 90.99% |   line3002 (inline)
+                                             0.10s  9.01% |   line1000
 ----------------------------------------------------------+-------------

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.tags

-key1: Total 1120
-      1000 (89.29%): tag1
-       100 ( 8.93%): tag2
-        10 ( 0.89%): tag3
-        10 ( 0.89%): tag4
+ key1: Total 1.1s
+          1.0s (89.29%): tag1
+       100.0ms ( 8.93%): tag2
+        10.0ms ( 0.89%): tag3
+        10.0ms ( 0.89%): tag4
 
-key2: Total 1020
-      1010 (99.02%): tag1
-        10 ( 0.98%): tag2
+ key2: Total 1.0s
+         1.0s (99.02%): tag1
+       10.0ms ( 0.98%): tag2
 
-key3: Total 100
-       100 (  100%): tag2
+ key3: Total 100.0ms
+       100.0ms (  100%): tag2
 

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.tags.focus.ignore

-key1: Total 100
-       100 (  100%): tag2
+ key1: Total 100.0ms
+       100.0ms (  100%): tag2
 
-key3: Total 100
-       100 (  100%): tag2
+ key3: Total 100.0ms
+       100.0ms (  100%): tag2
 

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.traces

@@ -4,29 +4,29 @@ Duration: 10s, Total samples = 1.12s (11.20%)
 -----------+-------------------------------------------------------
       key1:  tag1
       key2:  tag1
-        1s   line1000 testdata/file1000.src
-             line2001 testdata/file2000.src
-             line2000 testdata/file2000.src
-             line3002 testdata/file3000.src
-             line3001 testdata/file3000.src
-             line3000 testdata/file3000.src
+        1s   line1000
+             line2001
+             line2000
+             line3002
+             line3001
+             line3000
 -----------+-------------------------------------------------------
       key1:  tag2
       key3:  tag2
-     100ms   line1000 testdata/file1000.src
-             line3001 testdata/file3000.src
-             line3000 testdata/file3000.src
+     100ms   line1000
+             line3001
+             line3000
 -----------+-------------------------------------------------------
       key1:  tag3
       key2:  tag2
-      10ms   line2001 testdata/file2000.src
-             line2000 testdata/file2000.src
-             line3002 testdata/file3000.src
-             line3000 testdata/file3000.src
+      10ms   line2001
+             line2000
+             line3002
+             line3000
 -----------+-------------------------------------------------------
       key1:  tag4
       key2:  tag1
-      10ms   line3002 testdata/file3000.src
-             line3001 testdata/file3000.src
-             line3000 testdata/file3000.src
+      10ms   line3002
+             line3001
+             line3000
 -----------+-------------------------------------------------------

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.cum.relative_percentages.tree.focus

@@ -3,17 +3,17 @@ Dropped 2 nodes (cum <= 3.17MB)
 ----------------------------------------------------------+-------------
       flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
 ----------------------------------------------------------+-------------
-                                           63.48MB   100% |   line3002 testdata/file3000.src
-         0     0%     0%    63.48MB   100%                | line2000 testdata/file2000.src
-                                           63.48MB   100% |   line2001 testdata/file2000.src (inline)
+                                           63.48MB   100% |   line3002
+         0     0%     0%    63.48MB   100%                | line2000
+                                           63.48MB   100% |   line2001 (inline)
 ----------------------------------------------------------+-------------
-                                           63.48MB   100% |   line2000 testdata/file2000.src (inline)
-   62.50MB 98.46% 98.46%    63.48MB   100%                | line2001 testdata/file2000.src
+                                           63.48MB   100% |   line2000 (inline)
+   62.50MB 98.46% 98.46%    63.48MB   100%                | line2001
 ----------------------------------------------------------+-------------
-         0     0% 98.46%    63.48MB   100%                | line3000 testdata/file3000.src
-                                           63.48MB   100% |   line3002 testdata/file3000.src (inline)
+         0     0% 98.46%    63.48MB   100%                | line3000
+                                           63.48MB   100% |   line3002 (inline)
 ----------------------------------------------------------+-------------
-                                           63.48MB   100% |   line3000 testdata/file3000.src (inline)
-         0     0% 98.46%    63.48MB   100%                | line3002 testdata/file3000.src
-                                           63.48MB   100% |   line2000 testdata/file2000.src
+                                           63.48MB   100% |   line3000 (inline)
+         0     0% 98.46%    63.48MB   100%                | line3002
+                                           63.48MB   100% |   line2000
 ----------------------------------------------------------+-------------

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.inuse_objects.text

 Showing nodes accounting for 150, 100% of 150 total
       flat  flat%   sum%        cum   cum%
-        80 53.33% 53.33%        130 86.67%  line3002 testdata/file3000.src (inline)
-        40 26.67% 80.00%         50 33.33%  line2001 testdata/file2000.src (inline)
-        30 20.00%   100%         30 20.00%  line1000 testdata/file1000.src
-         0     0%   100%         50 33.33%  line2000 testdata/file2000.src
-         0     0%   100%        150   100%  line3000 testdata/file3000.src
-         0     0%   100%        110 73.33%  line3001 testdata/file3000.src (inline)
+        80 53.33% 53.33%        130 86.67%  line3002 (inline)
+        40 26.67% 80.00%         50 33.33%  line2001 (inline)
+        30 20.00%   100%         30 20.00%  line1000
+         0     0%   100%         50 33.33%  line2000
+         0     0%   100%        150   100%  line3000
+         0     0%   100%        110 73.33%  line3001 (inline)

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.inuse_space.dot.focus

 digraph "unnamed" {
 node [style=filled fillcolor="#f8f8f8"]
 subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: inuse_space\lShowing nodes accounting for 62.50MB, 63.37% of 98.63MB total\l"] }
-N1 [label="line2001\nfile2000.src\n62.50MB (63.37%)" fontsize=24 shape=box tooltip="line2001 testdata/file2000.src (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N1 [label="line2001\n62.50MB (63.37%)" fontsize=24 shape=box tooltip="line2001 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
 NN1_0 [label = "1.56MB" fontsize=8 shape=box3d tooltip="62.50MB"]
 N1 -> NN1_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
-N2 [label="line3000\nfile3000.src\n0 of 62.50MB (63.37%)" fontsize=8 shape=box tooltip="line3000 testdata/file3000.src (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
-N3 [label="line2000\nfile2000.src\n0 of 62.50MB (63.37%)" fontsize=8 shape=box tooltip="line2000 testdata/file2000.src (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
-N4 [label="line3002\nfile3000.src\n0 of 62.50MB (63.37%)" fontsize=8 shape=box tooltip="line3002 testdata/file3000.src (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
-N3 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line2000 testdata/file2000.src -> line2001 testdata/file2000.src (62.50MB)" labeltooltip="line2000 testdata/file2000.src -> line2001 testdata/file2000.src (62.50MB)"]
-N2 -> N4 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 testdata/file3000.src -> line3002 testdata/file3000.src (62.50MB)" labeltooltip="line3000 testdata/file3000.src -> line3002 testdata/file3000.src (62.50MB)"]
-N4 -> N3 [label=" 62.50MB" weight=64 penwidth=4 color="#b21600" tooltip="line3002 testdata/file3000.src -> line2000 testdata/file2000.src (62.50MB)" labeltooltip="line3002 testdata/file3000.src -> line2000 testdata/file2000.src (62.50MB)"]
+N2 [label="line3000\n0 of 62.50MB (63.37%)" fontsize=8 shape=box tooltip="line3000 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N3 [label="line2000\n0 of 62.50MB (63.37%)" fontsize=8 shape=box tooltip="line2000 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N4 [label="line3002\n0 of 62.50MB (63.37%)" fontsize=8 shape=box tooltip="line3002 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N3 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line2000 -> line2001 (62.50MB)" labeltooltip="line2000 -> line2001 (62.50MB)"]
+N2 -> N4 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 -> line3002 (62.50MB)" labeltooltip="line3000 -> line3002 (62.50MB)"]
+N4 -> N3 [label=" 62.50MB" weight=64 penwidth=4 color="#b21600" tooltip="line3002 -> line2000 (62.50MB)" labeltooltip="line3002 -> line2000 (62.50MB)"]
 }

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.inuse_space.dot.focus.ignore

 digraph "unnamed" {
 node [style=filled fillcolor="#f8f8f8"]
 subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: inuse_space\lShowing nodes accounting for 36.13MB, 36.63% of 98.63MB total\lDropped 2 nodes (cum <= 4.93MB)\l"] }
-N1 [label="line3002\nfile3000.src\n31.25MB (31.68%)\nof 32.23MB (32.67%)" fontsize=24 shape=box tooltip="line3002 testdata/file3000.src (32.23MB)" color="#b23200" fillcolor="#eddcd5"]
+N1 [label="line3002\n31.25MB (31.68%)\nof 32.23MB (32.67%)" fontsize=24 shape=box tooltip="line3002 (32.23MB)" color="#b23200" fillcolor="#eddcd5"]
 NN1_0 [label = "400kB" fontsize=8 shape=box3d tooltip="31.25MB"]
 N1 -> NN1_0 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
-N2 [label="line3000\nfile3000.src\n0 of 36.13MB (36.63%)" fontsize=8 shape=box tooltip="line3000 testdata/file3000.src (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
-N3 [label="line3001\nfile3000.src\n0 of 36.13MB (36.63%)" fontsize=8 shape=box tooltip="line3001 testdata/file3000.src (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
-N4 [label="line1000\nfile1000.src\n4.88MB (4.95%)" fontsize=15 shape=box tooltip="line1000 testdata/file1000.src (4.88MB)" color="#b2a086" fillcolor="#edeae7"]
+N2 [label="line3000\n0 of 36.13MB (36.63%)" fontsize=8 shape=box tooltip="line3000 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N3 [label="line3001\n0 of 36.13MB (36.63%)" fontsize=8 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N4 [label="line1000\n4.88MB (4.95%)" fontsize=15 shape=box tooltip="line1000 (4.88MB)" color="#b2a086" fillcolor="#edeae7"]
 NN4_0 [label = "200kB" fontsize=8 shape=box3d tooltip="3.91MB"]
 N4 -> NN4_0 [label=" 3.91MB" weight=100 tooltip="3.91MB" labeltooltip="3.91MB"]
-N2 -> N3 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (36.13MB)" labeltooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (36.13MB)"]
-N3 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 testdata/file3000.src -> line3002 testdata/file3000.src (32.23MB)" labeltooltip="line3001 testdata/file3000.src -> line3002 testdata/file3000.src (32.23MB)"]
-N3 -> N4 [label=" 3.91MB" weight=4 color="#b2a58f" tooltip="line3001 testdata/file3000.src -> line1000 testdata/file1000.src (3.91MB)" labeltooltip="line3001 testdata/file3000.src -> line1000 testdata/file1000.src (3.91MB)"]
-N1 -> N4 [label=" 0.98MB" color="#b2b0a9" tooltip="line3002 testdata/file3000.src ... line1000 testdata/file1000.src (0.98MB)" labeltooltip="line3002 testdata/file3000.src ... line1000 testdata/file1000.src (0.98MB)" style="dotted" minlen=2]
+N2 -> N3 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)"]
+N3 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 -> line3002 (32.23MB)" labeltooltip="line3001 -> line3002 (32.23MB)"]
+N3 -> N4 [label=" 3.91MB" weight=4 color="#b2a58f" tooltip="line3001 -> line1000 (3.91MB)" labeltooltip="line3001 -> line1000 (3.91MB)"]
+N1 -> N4 [label=" 0.98MB" color="#b2b0a9" tooltip="line3002 ... line1000 (0.98MB)" labeltooltip="line3002 ... line1000 (0.98MB)" style="dotted" minlen=2]
 }

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.tags

-bytes: Total 150
-        80 (53.33%): 400kB
-        40 (26.67%): 1.56MB
-        20 (13.33%): 200kB
-        10 ( 6.67%): 100kB
+ bytes: Total 98.6MB
+          62.5MB (63.37%): 1.56MB
+          31.2MB (31.68%): 400kB
+           3.9MB ( 3.96%): 200kB
+        1000.0kB ( 0.99%): 100kB
 

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.tags.unit

-bytes: Total 150
-        80 (53.33%): 409600B
-        40 (26.67%): 1638400B
-        20 (13.33%): 204800B
-        10 ( 6.67%): 102400B
+ bytes: Total 103424000.0B
+        65536000.0B (63.37%): 1638400B
+        32768000.0B (31.68%): 409600B
+         4096000.0B ( 3.96%): 204800B
+         1024000.0B ( 0.99%): 102400B
 

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_objects.text

 Showing nodes accounting for 150, 100% of 150 total
       flat  flat%   sum%        cum   cum%
-        80 53.33% 53.33%        130 86.67%  line3002 testdata/file3000.src (inline)
-        40 26.67% 80.00%         50 33.33%  line2001 testdata/file2000.src (inline)
-        30 20.00%   100%         30 20.00%  line1000 testdata/file1000.src
-         0     0%   100%         50 33.33%  line2000 testdata/file2000.src
-         0     0%   100%        150   100%  line3000 testdata/file3000.src
-         0     0%   100%        110 73.33%  line3001 testdata/file3000.src (inline)
+        80 53.33% 53.33%        130 86.67%  line3002 (inline)
+        40 26.67% 80.00%         50 33.33%  line2001 (inline)
+        30 20.00%   100%         30 20.00%  line1000
+         0     0%   100%         50 33.33%  line2000
+         0     0%   100%        150   100%  line3000
+         0     0%   100%        110 73.33%  line3001 (inline)

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_space.dot.focus

 digraph "unnamed" {
 node [style=filled fillcolor="#f8f8f8"]
 subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: alloc_space\lShowing nodes accounting for 93.75MB, 95.05% of 98.63MB total\lDropped 1 node (cum <= 4.93MB)\l"] }
-N1 [label="line3002\nfile3000.src\n31.25MB (31.68%)\nof 94.73MB (96.04%)" fontsize=20 shape=box tooltip="line3002 testdata/file3000.src (94.73MB)" color="#b20200" fillcolor="#edd5d5"]
+N1 [label="line3002\n31.25MB (31.68%)\nof 94.73MB (96.04%)" fontsize=20 shape=box tooltip="line3002 (94.73MB)" color="#b20200" fillcolor="#edd5d5"]
 NN1_0 [label = "400kB" fontsize=8 shape=box3d tooltip="31.25MB"]
 N1 -> NN1_0 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
-N2 [label="line3000\nfile3000.src\n0 of 98.63MB (100%)" fontsize=8 shape=box tooltip="line3000 testdata/file3000.src (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
-N3 [label="line2001\nfile2000.src\n62.50MB (63.37%)\nof 63.48MB (64.36%)" fontsize=24 shape=box tooltip="line2001 testdata/file2000.src (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N2 [label="line3000\n0 of 98.63MB (100%)" fontsize=8 shape=box tooltip="line3000 (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line2001\n62.50MB (63.37%)\nof 63.48MB (64.36%)" fontsize=24 shape=box tooltip="line2001 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
 NN3_0 [label = "1.56MB" fontsize=8 shape=box3d tooltip="62.50MB"]
 N3 -> NN3_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
-N4 [label="line2000\nfile2000.src\n0 of 63.48MB (64.36%)" fontsize=8 shape=box tooltip="line2000 testdata/file2000.src (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
-N5 [label="line3001\nfile3000.src\n0 of 36.13MB (36.63%)" fontsize=8 shape=box tooltip="line3001 testdata/file3000.src (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
-N4 -> N3 [label=" 63.48MB\n (inline)" weight=65 penwidth=4 color="#b21600" tooltip="line2000 testdata/file2000.src -> line2001 testdata/file2000.src (63.48MB)" labeltooltip="line2000 testdata/file2000.src -> line2001 testdata/file2000.src (63.48MB)"]
-N1 -> N4 [label=" 63.48MB" weight=65 penwidth=4 color="#b21600" tooltip="line3002 testdata/file3000.src -> line2000 testdata/file2000.src (63.48MB)" labeltooltip="line3002 testdata/file3000.src -> line2000 testdata/file2000.src (63.48MB)" minlen=2]
-N2 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 testdata/file3000.src -> line3002 testdata/file3000.src (62.50MB)" labeltooltip="line3000 testdata/file3000.src -> line3002 testdata/file3000.src (62.50MB)"]
-N2 -> N5 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (36.13MB)" labeltooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (36.13MB)"]
-N5 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 testdata/file3000.src -> line3002 testdata/file3000.src (32.23MB)" labeltooltip="line3001 testdata/file3000.src -> line3002 testdata/file3000.src (32.23MB)"]
+N4 [label="line2000\n0 of 63.48MB (64.36%)" fontsize=8 shape=box tooltip="line2000 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N5 [label="line3001\n0 of 36.13MB (36.63%)" fontsize=8 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N4 -> N3 [label=" 63.48MB\n (inline)" weight=65 penwidth=4 color="#b21600" tooltip="line2000 -> line2001 (63.48MB)" labeltooltip="line2000 -> line2001 (63.48MB)"]
+N1 -> N4 [label=" 63.48MB" weight=65 penwidth=4 color="#b21600" tooltip="line3002 -> line2000 (63.48MB)" labeltooltip="line3002 -> line2000 (63.48MB)" minlen=2]
+N2 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 -> line3002 (62.50MB)" labeltooltip="line3000 -> line3002 (62.50MB)"]
+N2 -> N5 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)"]
+N5 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 -> line3002 (32.23MB)" labeltooltip="line3001 -> line3002 (32.23MB)"]
 }

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_space.dot.hide

 digraph "unnamed" {
 node [style=filled fillcolor="#f8f8f8"]
 subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: alloc_space\lShowing nodes accounting for 93.75MB, 95.05% of 98.63MB total\lDropped 1 node (cum <= 4.93MB)\l"] }
-N1 [label="line3000\nfile3000.src\n62.50MB (63.37%)\nof 98.63MB (100%)" fontsize=24 shape=box tooltip="line3000 testdata/file3000.src (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
+N1 [label="line3000\n62.50MB (63.37%)\nof 98.63MB (100%)" fontsize=24 shape=box tooltip="line3000 (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
 NN1_0 [label = "1.56MB" fontsize=8 shape=box3d tooltip="62.50MB"]
 N1 -> NN1_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
-N2 [label="line3001\nfile3000.src\n31.25MB (31.68%)\nof 36.13MB (36.63%)" fontsize=20 shape=box tooltip="line3001 testdata/file3000.src (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N2 [label="line3001\n31.25MB (31.68%)\nof 36.13MB (36.63%)" fontsize=20 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
 NN2_0 [label = "400kB" fontsize=8 shape=box3d tooltip="31.25MB"]
 N2 -> NN2_0 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
-N1 -> N2 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (36.13MB)" labeltooltip="line3000 testdata/file3000.src -> line3001 testdata/file3000.src (36.13MB)" minlen=2]
+N1 -> N2 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)" minlen=2]
 }

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.unknown.flat.functions.call_tree.text

+Showing nodes accounting for 1.12s, 100% of 1.12s total
+Showing top 5 nodes out of 6
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 (inline)
+     0.01s  0.89%   100%      1.02s 91.07%  line3002 (inline)
+         0     0%   100%      1.01s 90.18%  line2000
+         0     0%   100%      1.12s   100%  line3000

src/cmd/vendor/github.com/google/pprof/internal/driver/testdata/pprof.unknown.flat.functions.text

-Showing nodes accounting for 1.12s, 100% of 1.12s total
-      flat  flat%   sum%        cum   cum%
-     1.10s 98.21% 98.21%      1.10s 98.21%  line1000 testdata/file1000.src
-     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 testdata/file2000.src (inline)
-     0.01s  0.89%   100%      1.02s 91.07%  line3002 testdata/file3000.src (inline)
-         0     0%   100%      1.01s 90.18%  line2000 testdata/file2000.src
-         0     0%   100%      1.12s   100%  line3000 testdata/file3000.src
-         0     0%   100%      1.11s 99.11%  line3001 testdata/file3000.src (inline)

src/cmd/vendor/github.com/google/pprof/internal/elfexec/elfexec.go

@@ -131,7 +131,7 @@ func GetBuildID(binary io.ReaderAt) ([]byte, error) {
 				if buildID == nil {
 					buildID = note.Desc
 				} else {
-					return nil, fmt.Errorf("multiple build ids found, don't know which to use!")
+					return nil, fmt.Errorf("multiple build ids found, don't know which to use")
 				}
 			}
 		}
@@ -240,17 +240,22 @@ func GetBase(fh *elf.FileHeader, loadSegment *elf.ProgHeader, stextOffset *uint6
 		}
 		return start, nil
 	case elf.ET_DYN:
-		if offset != 0 {
-			if loadSegment == nil || loadSegment.Vaddr == 0 {
-				return start - offset, nil
-			}
-			return 0, fmt.Errorf("Don't know how to handle mapping. Offset=%x, vaddr=%x",
-				offset, loadSegment.Vaddr)
-		}
+		// The process mapping information, start = start of virtual address range,
+		// and offset = offset in the executable file of the start address, tells us
+		// that a runtime virtual address x maps to a file offset
+		// fx = x - start + offset.
 		if loadSegment == nil {
-			return start, nil
+			return start - offset, nil
 		}
-		return start - loadSegment.Vaddr, nil
+		// The program header, if not nil, indicates the offset in the file where
+		// the executable segment is located (loadSegment.Off), and the base virtual
+		// address where the first byte of the segment is loaded
+		// (loadSegment.Vaddr). A file offset fx maps to a virtual (symbol) address
+		// sx = fx - loadSegment.Off + loadSegment.Vaddr.
+		//
+		// Thus, a runtime virtual address x maps to a symbol address
+		// sx = x - start + offset - loadSegment.Off + loadSegment.Vaddr.
+		return start - offset + loadSegment.Off - loadSegment.Vaddr, nil
 	}
 	return 0, fmt.Errorf("Don't know how to handle FileHeader.Type %v", fh.Type)
 }

src/cmd/vendor/github.com/google/pprof/internal/elfexec/elfexec_test.go

@@ -62,8 +62,9 @@ func TestGetBase(t *testing.T) {
 		{"exec chromeos kernel 4", fhExec, kernelHeader, uint64p(0xffffffff81200198), 0x198, 0x100000, 0, 0x7ee00000, false},
 		{"exec chromeos kernel unremapped", fhExec, kernelHeader, uint64p(0xffffffff810001c8), 0xffffffff834001c8, 0xffffffffc0000000, 0xffffffff834001c8, 0x2400000, false},
 		{"dyn", fhDyn, nil, nil, 0x200000, 0x300000, 0, 0x200000, false},
-		{"dyn offset", fhDyn, lsOffset, nil, 0x0, 0x300000, 0, 0xFFFFFFFFFFC00000, false},
+		{"dyn map", fhDyn, lsOffset, nil, 0x0, 0x300000, 0, 0xFFFFFFFFFFE00000, false},
 		{"dyn nomap", fhDyn, nil, nil, 0x0, 0x0, 0, 0, false},
+		{"dyn map+offset", fhDyn, lsOffset, nil, 0x900000, 0xa00000, 0x200000, 0x500000, false},
 		{"rel", fhRel, nil, nil, 0x2000000, 0x3000000, 0, 0x2000000, false},
 		{"rel nomap", fhRel, nil, nil, 0x0, ^uint64(0), 0, 0, false},
 		{"rel offset", fhRel, nil, nil, 0x100000, 0x200000, 0x1, 0, true},

src/cmd/vendor/github.com/google/pprof/internal/graph/dotgraph.go

@@ -50,7 +50,9 @@ type DotConfig struct {
 	Total       int64                      // The total weight of the graph, used to compute percentages
 }
 
-// Compose creates and writes a in the DOT format to the writer, using
+const maxNodelets = 4 // Number of nodelets for labels (both numeric and non)
+
+// ComposeDot creates and writes a in the DOT format to the writer, using
 // the configurations given.
 func ComposeDot(w io.Writer, g *Graph, a *DotAttributes, c *DotConfig) {
 	builder := &builder{w, a, c}
@@ -204,13 +206,11 @@ func (b *builder) addNode(node *Node, nodeID int, maxFlat float64) {
 
 // addNodelets generates the DOT boxes for the node tags if they exist.
 func (b *builder) addNodelets(node *Node, nodeID int) bool {
-	const maxNodelets = 4    // Number of nodelets for alphanumeric labels
-	const maxNumNodelets = 4 // Number of nodelets for numeric labels
 	var nodelets string
 
 	// Populate two Tag slices, one for LabelTags and one for NumericTags.
 	var ts []*Tag
-	lnts := make(map[string][]*Tag, 0)
+	lnts := make(map[string][]*Tag)
 	for _, t := range node.LabelTags {
 		ts = append(ts, t)
 	}
@@ -242,12 +242,12 @@ func (b *builder) addNodelets(node *Node, nodeID int) bool {
 		nodelets += fmt.Sprintf(`N%d_%d [label = "%s" fontsize=8 shape=box3d tooltip="%s"]`+"\n", nodeID, i, t.Name, weight)
 		nodelets += fmt.Sprintf(`N%d -> N%d_%d [label=" %s" weight=100 tooltip="%s" labeltooltip="%s"]`+"\n", nodeID, nodeID, i, weight, weight, weight)
 		if nts := lnts[t.Name]; nts != nil {
-			nodelets += b.numericNodelets(nts, maxNumNodelets, flatTags, fmt.Sprintf(`N%d_%d`, nodeID, i))
+			nodelets += b.numericNodelets(nts, maxNodelets, flatTags, fmt.Sprintf(`N%d_%d`, nodeID, i))
 		}
 	}
 
 	if nts := lnts[""]; nts != nil {
-		nodelets += b.numericNodelets(nts, maxNumNodelets, flatTags, fmt.Sprintf(`N%d`, nodeID))
+		nodelets += b.numericNodelets(nts, maxNodelets, flatTags, fmt.Sprintf(`N%d`, nodeID))
 	}
 
 	fmt.Fprint(b, nodelets)

src/cmd/vendor/github.com/google/pprof/internal/graph/dotgraph_test.go

@@ -209,6 +209,59 @@ func compareGraphs(t *testing.T, got, want []byte) {
 	}
 }
 
+func TestNodeletCountCapping(t *testing.T) {
+	labelTags := make(TagMap)
+	for i := 0; i < 10; i++ {
+		name := fmt.Sprintf("tag-%d", i)
+		labelTags[name] = &Tag{
+			Name: name,
+			Flat: 10,
+			Cum:  10,
+		}
+	}
+	numTags := make(TagMap)
+	for i := 0; i < 10; i++ {
+		name := fmt.Sprintf("num-tag-%d", i)
+		numTags[name] = &Tag{
+			Name:  name,
+			Unit:  "mb",
+			Value: 16,
+			Flat:  10,
+			Cum:   10,
+		}
+	}
+	node1 := &Node{
+		Info:        NodeInfo{Name: "node1-with-tags"},
+		Flat:        10,
+		Cum:         10,
+		NumericTags: map[string]TagMap{"": numTags},
+		LabelTags:   labelTags,
+	}
+	node2 := &Node{
+		Info: NodeInfo{Name: "node2"},
+		Flat: 15,
+		Cum:  15,
+	}
+	node3 := &Node{
+		Info: NodeInfo{Name: "node3"},
+		Flat: 15,
+		Cum:  15,
+	}
+	g := &Graph{
+		Nodes: Nodes{
+			node1,
+			node2,
+			node3,
+		},
+	}
+	for n := 1; n <= 3; n++ {
+		input := maxNodelets + n
+		if got, want := len(g.SelectTopNodes(input, true)), n; got != want {
+			t.Errorf("SelectTopNodes(%d): got %d nodes, want %d", input, got, want)
+		}
+	}
+}
+
 func TestMultilinePrintableName(t *testing.T) {
 	ni := &NodeInfo{
 		Name:    "test1.test2::test3",
@@ -240,19 +293,19 @@ func TestTagCollapse(t *testing.T) {
 	}
 
 	tagWant := [][]*Tag{
-		[]*Tag{
+		{
 			makeTag("1B..2GB", "", 0, 2401, 2401),
 		},
-		[]*Tag{
+		{
 			makeTag("2GB", "", 0, 1000, 1000),
 			makeTag("1B..12MB", "", 0, 1401, 1401),
 		},
-		[]*Tag{
+		{
 			makeTag("2GB", "", 0, 1000, 1000),
 			makeTag("12MB", "", 0, 100, 100),
 			makeTag("1B..1MB", "", 0, 1301, 1301),
 		},
-		[]*Tag{
+		{
 			makeTag("2GB", "", 0, 1000, 1000),
 			makeTag("1MB", "", 0, 1000, 1000),
 			makeTag("2B..1kB", "", 0, 201, 201),

src/cmd/vendor/github.com/google/pprof/internal/graph/graph.go

@@ -240,6 +240,8 @@ type Edge struct {
 	Inline bool
 }
 
+// WeightValue returns the weight value for this edge, normalizing if a
+// divisor is available.
 func (e *Edge) WeightValue() int64 {
 	if e.WeightDiv == 0 {
 		return e.Weight
@@ -800,7 +802,11 @@ func (g *Graph) selectTopNodes(maxNodes int, visualMode bool) Nodes {
 			// If generating a visual graph, count tags as nodes. Update
 			// maxNodes to account for them.
 			for i, n := range g.Nodes {
-				if count += countTags(n) + 1; count >= maxNodes {
+				tags := countTags(n)
+				if tags > maxNodelets {
+					tags = maxNodelets
+				}
+				if count += tags + 1; count >= maxNodes {
 					maxNodes = i + 1
 					break
 				}
@@ -832,17 +838,6 @@ func countTags(n *Node) int {
 	return count
 }
 
-// countEdges counts the number of edges below the specified cutoff.
-func countEdges(el EdgeMap, cutoff int64) int {
-	count := 0
-	for _, e := range el {
-		if e.Weight > cutoff {
-			count++
-		}
-	}
-	return count
-}
-
 // RemoveRedundantEdges removes residual edges if the destination can
 // be reached through another path. This is done to simplify the graph
 // while preserving connectivity.

src/cmd/vendor/github.com/google/pprof/internal/measurement/measurement.go

@@ -170,12 +170,16 @@ func memoryLabel(value int64, fromUnit, toUnit string) (v float64, u string, ok
 
 	switch fromUnit {
 	case "byte", "b":
-	case "kilobyte", "kb":
+	case "kb", "kbyte", "kilobyte":
 		value *= 1024
-	case "megabyte", "mb":
+	case "mb", "mbyte", "megabyte":
 		value *= 1024 * 1024
-	case "gigabyte", "gb":
+	case "gb", "gbyte", "gigabyte":
 		value *= 1024 * 1024 * 1024
+	case "tb", "tbyte", "terabyte":
+		value *= 1024 * 1024 * 1024 * 1024
+	case "pb", "pbyte", "petabyte":
+		value *= 1024 * 1024 * 1024 * 1024 * 1024
 	default:
 		return 0, "", false
 	}
@@ -188,8 +192,12 @@ func memoryLabel(value int64, fromUnit, toUnit string) (v float64, u string, ok
 			toUnit = "kb"
 		case value < 1024*1024*1024:
 			toUnit = "mb"
-		default:
+		case value < 1024*1024*1024*1024:
 			toUnit = "gb"
+		case value < 1024*1024*1024*1024*1024:
+			toUnit = "tb"
+		default:
+			toUnit = "pb"
 		}
 	}
 
@@ -203,6 +211,10 @@ func memoryLabel(value int64, fromUnit, toUnit string) (v float64, u string, ok
 		output, toUnit = float64(value)/(1024*1024), "MB"
 	case "gb", "gbyte", "gigabyte":
 		output, toUnit = float64(value)/(1024*1024*1024), "GB"
+	case "tb", "tbyte", "terabyte":
+		output, toUnit = float64(value)/(1024*1024*1024*1024), "TB"
+	case "pb", "pbyte", "petabyte":
+		output, toUnit = float64(value)/(1024*1024*1024*1024*1024), "PB"
 	}
 	return output, toUnit, true
 }

src/cmd/vendor/github.com/google/pprof/internal/measurement/measurement_test.go

+// Copyright 2017 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package measurement
+
+import (
+	"testing"
+)
+
+func TestScale(t *testing.T) {
+	for _, tc := range []struct {
+		value            int64
+		fromUnit, toUnit string
+		wantValue        float64
+		wantUnit         string
+	}{
+		{1, "s", "ms", 1000, "ms"},
+		{1, "kb", "b", 1024, "B"},
+		{1, "kbyte", "b", 1024, "B"},
+		{1, "kilobyte", "b", 1024, "B"},
+		{1, "mb", "kb", 1024, "kB"},
+		{1, "gb", "mb", 1024, "MB"},
+		{1024, "gb", "tb", 1, "TB"},
+		{1024, "tb", "pb", 1, "PB"},
+		{2048, "mb", "auto", 2, "GB"},
+	} {
+		if gotValue, gotUnit := Scale(tc.value, tc.fromUnit, tc.toUnit); gotValue != tc.wantValue || gotUnit != tc.wantUnit {
+			t.Errorf("Scale(%d, %q, %q) = (%f, %q), want (%f, %q)",
+				tc.value, tc.fromUnit, tc.toUnit, gotValue, gotUnit, tc.wantValue, tc.wantUnit)
+		}
+	}
+}

src/cmd/vendor/github.com/google/pprof/internal/proftest/proftest.go

@@ -22,6 +22,7 @@ import (
 	"io/ioutil"
 	"os"
 	"os/exec"
+	"regexp"
 	"testing"
 )
 
@@ -71,10 +72,11 @@ func EncodeJSON(x interface{}) []byte {
 }
 
 // TestUI implements the plugin.UI interface, triggering test failures
-// if more than Ignore errors are printed.
+// if more than Ignore errors not matching IgnoreRx are printed.
 type TestUI struct {
 	T        *testing.T
 	Ignore   int
+	IgnoreRx string
 }
 
 // ReadLine returns no input, as no input is expected during testing.
@@ -89,6 +91,14 @@ func (ui *TestUI) Print(args ...interface{}) {
 // PrintErr messages may trigger an error failure. A fixed number of
 // error messages are permitted when appropriate.
 func (ui *TestUI) PrintErr(args ...interface{}) {
+	if ui.IgnoreRx != "" {
+		if matched, err := regexp.MatchString(ui.IgnoreRx, fmt.Sprint(args)); matched || err != nil {
+			if err != nil {
+				ui.T.Errorf("failed to match against regex %q: %v", ui.IgnoreRx, err)
+			}
+			return
+		}
+	}
 	if ui.Ignore > 0 {
 		ui.Ignore--
 		return

src/cmd/vendor/github.com/google/pprof/internal/report/report.go

@@ -25,6 +25,7 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"text/tabwriter"
 	"time"
 
 	"github.com/google/pprof/internal/graph"
@@ -125,6 +126,9 @@ func (rpt *Report) newTrimmedGraph() (g *graph.Graph, origCount, droppedNodes, d
 	visualMode := o.OutputFormat == Dot
 	cumSort := o.CumSort
 
+	// The call_tree option is only honored when generating visual representations of the callgraph.
+	callTree := o.CallTree && (o.OutputFormat == Dot || o.OutputFormat == Callgrind)
+
 	// First step: Build complete graph to identify low frequency nodes, based on their cum weight.
 	g = rpt.newGraph(nil)
 	totalValue, _ := g.Nodes.Sum()
@@ -133,7 +137,7 @@ func (rpt *Report) newTrimmedGraph() (g *graph.Graph, origCount, droppedNodes, d
 
 	// Filter out nodes with cum value below nodeCutoff.
 	if nodeCutoff > 0 {
-		if o.CallTree {
+		if callTree {
 			if nodesKept := g.DiscardLowFrequencyNodePtrs(nodeCutoff); len(g.Nodes) != len(nodesKept) {
 				droppedNodes = len(g.Nodes) - len(nodesKept)
 				g.TrimTree(nodesKept)
@@ -154,7 +158,7 @@ func (rpt *Report) newTrimmedGraph() (g *graph.Graph, origCount, droppedNodes, d
 		// Remove low frequency tags and edges as they affect selection.
 		g.TrimLowFrequencyTags(nodeCutoff)
 		g.TrimLowFrequencyEdges(edgeCutoff)
-		if o.CallTree {
+		if callTree {
 			if nodesKept := g.SelectTopNodePtrs(nodeCount, visualMode); len(g.Nodes) != len(nodesKept) {
 				g.TrimTree(nodesKept)
 				g.SortNodes(cumSort, visualMode)
@@ -528,6 +532,7 @@ type assemblyInstruction struct {
 	line            int
 	flat, cum       int64
 	flatDiv, cumDiv int64
+	startsBlock     bool
 }
 
 func (a *assemblyInstruction) flatValue() int64 {
@@ -617,26 +622,24 @@ func printTags(w io.Writer, rpt *Report) error {
 	for _, s := range p.Sample {
 		for key, vals := range s.Label {
 			for _, val := range vals {
-				if valueMap, ok := tagMap[key]; ok {
-					valueMap[val] = valueMap[val] + s.Value[0]
-					continue
-				}
-				valueMap := make(map[string]int64)
-				valueMap[val] = s.Value[0]
+				valueMap, ok := tagMap[key]
+				if !ok {
+					valueMap = make(map[string]int64)
 					tagMap[key] = valueMap
 				}
+				valueMap[val] += o.SampleValue(s.Value)
+			}
 		}
 		for key, vals := range s.NumLabel {
 			for _, nval := range vals {
 				val := formatTag(nval, key)
-				if valueMap, ok := tagMap[key]; ok {
-					valueMap[val] = valueMap[val] + s.Value[0]
-					continue
-				}
-				valueMap := make(map[string]int64)
-				valueMap[val] = s.Value[0]
+				valueMap, ok := tagMap[key]
+				if !ok {
+					valueMap = make(map[string]int64)
 					tagMap[key] = valueMap
 				}
+				valueMap[val] += o.SampleValue(s.Value)
+			}
 		}
 	}
 
@@ -644,6 +647,7 @@ func printTags(w io.Writer, rpt *Report) error {
 	for key := range tagMap {
 		tagKeys = append(tagKeys, &graph.Tag{Name: key})
 	}
+	tabw := tabwriter.NewWriter(w, 0, 0, 1, ' ', tabwriter.AlignRight)
 	for _, tagKey := range graph.SortTags(tagKeys, true) {
 		var total int64
 		key := tagKey.Name
@@ -653,18 +657,19 @@ func printTags(w io.Writer, rpt *Report) error {
 			tags = append(tags, &graph.Tag{Name: t, Flat: c})
 		}
 
-		fmt.Fprintf(w, "%s: Total %d\n", key, total)
+		f, u := measurement.Scale(total, o.SampleUnit, o.OutputUnit)
+		fmt.Fprintf(tabw, "%s:\t Total %.1f%s\n", key, f, u)
 		for _, t := range graph.SortTags(tags, true) {
+			f, u := measurement.Scale(t.FlatValue(), o.SampleUnit, o.OutputUnit)
 			if total > 0 {
-				fmt.Fprintf(w, "  %8d (%s): %s\n", t.FlatValue(),
-					percentage(t.FlatValue(), total), t.Name)
+				fmt.Fprintf(tabw, " \t%.1f%s (%s):\t %s\n", f, u, percentage(t.FlatValue(), total), t.Name)
 			} else {
-				fmt.Fprintf(w, "  %8d: %s\n", t.FlatValue(), t.Name)
+				fmt.Fprintf(tabw, " \t%.1f%s:\t %s\n", f, u, t.Name)
 			}
 		}
-		fmt.Fprintln(w)
+		fmt.Fprintln(tabw)
 	}
-	return nil
+	return tabw.Flush()
 }
 
 // printComments prints all freeform comments in the profile.
@@ -1055,9 +1060,7 @@ func reportLabels(rpt *Report, g *graph.Graph, origCount, droppedNodes, droppedE
 
 	var label []string
 	if len(rpt.options.ProfileLabels) > 0 {
-		for _, l := range rpt.options.ProfileLabels {
-			label = append(label, l)
-		}
+		label = append(label, rpt.options.ProfileLabels...)
 	} else if fullHeaders || !rpt.options.CompactLabels {
 		label = ProfileLabels(rpt)
 	}

src/cmd/vendor/github.com/google/pprof/internal/report/source.go

@@ -167,7 +167,7 @@ func printWebSource(w io.Writer, rpt *Report, obj plugin.ObjTool) error {
 	}
 
 	if len(fileNodes) == 0 {
-		return fmt.Errorf("No source information for %s\n", o.Symbol.String())
+		return fmt.Errorf("No source information for %s", o.Symbol.String())
 	}
 
 	sourceFiles := make(graph.Nodes, 0, len(fileNodes))
@@ -236,11 +236,18 @@ func assemblyPerSourceLine(objSyms []*objSymbol, rs graph.Nodes, src string, obj
 	srcBase := filepath.Base(src)
 	anodes := annotateAssembly(insts, rs, o.base)
 	var lineno = 0
+	var prevline = 0
 	for _, an := range anodes {
 		if filepath.Base(an.file) == srcBase {
 			lineno = an.line
 		}
 		if lineno != 0 {
+			if lineno != prevline {
+				// This instruction starts a new block
+				// of contiguous instructions on this line.
+				an.startsBlock = true
+			}
+			prevline = lineno
 			assembly[lineno] = append(assembly[lineno], an)
 		}
 	}
@@ -306,7 +313,12 @@ func printFunctionSourceLine(w io.Writer, fn *graph.Node, assembly []assemblyIns
 		valueOrDot(fn.Flat, rpt), valueOrDot(fn.Cum, rpt),
 		template.HTMLEscapeString(fn.Info.Name))
 	fmt.Fprint(w, "<span class=asm>")
-	for _, an := range assembly {
+	for i, an := range assembly {
+		if an.startsBlock && i != 0 {
+			// Insert a separator between discontiguous blocks.
+			fmt.Fprintf(w, " %8s %30s\n", "", "⋮")
+		}
+
 		var fileline string
 		class := "disasmloc"
 		if an.file != "" {
@@ -322,10 +334,10 @@ func printFunctionSourceLine(w io.Writer, fn *graph.Node, assembly []assemblyIns
 		if an.cumDiv != 0 {
 			cum = cum / an.cumDiv
 		}
-		fmt.Fprintf(w, " %8s %10s %10s %8x: %-48s <span class=%s>%s</span>\n", "",
+		fmt.Fprintf(w, " %8s %10s %10s %8x: %s <span class=%s>%s</span>\n", "",
 			valueOrDot(flat, rpt), valueOrDot(cum, rpt),
 			an.address,
-			template.HTMLEscapeString(an.instruction),
+			template.HTMLEscapeString(fmt.Sprintf("%-48s", strings.Replace(an.instruction, "\t", " ", -1))),
 			class,
 			template.HTMLEscapeString(fileline))
 	}

src/cmd/vendor/github.com/google/pprof/internal/report/source_html.go

@@ -18,6 +18,7 @@ const weblistPageHeader = `
 <!DOCTYPE html>
 <html>
 <head>
+<meta charset="UTF-8">
 <title>Pprof listing</title>
 <style type="text/css">
 body {

src/cmd/vendor/github.com/google/pprof/internal/symbolizer/symbolizer.go

@@ -18,6 +18,7 @@
 package symbolizer
 
 import (
+	"crypto/tls"
 	"fmt"
 	"io/ioutil"
 	"net/http"
@@ -90,7 +91,26 @@ func (s *Symbolizer) Symbolize(mode string, sources plugin.MappingSources, p *pr
 
 // postURL issues a POST to a URL over HTTP.
 func postURL(source, post string) ([]byte, error) {
-	resp, err := http.Post(source, "application/octet-stream", strings.NewReader(post))
+	url, err := url.Parse(source)
+	if err != nil {
+		return nil, err
+	}
+
+	var tlsConfig *tls.Config
+	if url.Scheme == "https+insecure" {
+		tlsConfig = &tls.Config{
+			InsecureSkipVerify: true,
+		}
+		url.Scheme = "https"
+		source = url.String()
+	}
+
+	client := &http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: tlsConfig,
+		},
+	}
+	resp, err := client.Post(source, "application/octet-stream", strings.NewReader(post))
 	if err != nil {
 		return nil, fmt.Errorf("http post %s: %v", source, err)
 	}

src/cmd/vendor/github.com/google/pprof/internal/symbolizer/symbolizer_test.go

@@ -207,11 +207,11 @@ func checkSymbolizedLocation(a uint64, got []profile.Line) error {
 }
 
 var mockAddresses = map[uint64][]plugin.Frame{
-	1000: []plugin.Frame{frame("fun11", "file11.src", 10)},
-	2000: []plugin.Frame{frame("fun21", "file21.src", 20), frame("fun22", "file22.src", 20)},
-	3000: []plugin.Frame{frame("fun31", "file31.src", 30), frame("fun32", "file32.src", 30), frame("fun33", "file33.src", 30)},
-	4000: []plugin.Frame{frame("fun41", "file41.src", 40), frame("fun42", "file42.src", 40), frame("fun43", "file43.src", 40), frame("fun44", "file44.src", 40)},
-	5000: []plugin.Frame{frame("fun51", "file51.src", 50), frame("fun52", "file52.src", 50), frame("fun53", "file53.src", 50), frame("fun54", "file54.src", 50), frame("fun55", "file55.src", 50)},
+	1000: {frame("fun11", "file11.src", 10)},
+	2000: {frame("fun21", "file21.src", 20), frame("fun22", "file22.src", 20)},
+	3000: {frame("fun31", "file31.src", 30), frame("fun32", "file32.src", 30), frame("fun33", "file33.src", 30)},
+	4000: {frame("fun41", "file41.src", 40), frame("fun42", "file42.src", 40), frame("fun43", "file43.src", 40), frame("fun44", "file44.src", 40)},
+	5000: {frame("fun51", "file51.src", 50), frame("fun52", "file52.src", 50), frame("fun53", "file53.src", 50), frame("fun54", "file54.src", 50), frame("fun55", "file55.src", 50)},
 }
 
 func frame(fname, file string, line int) plugin.Frame {

src/cmd/vendor/github.com/google/pprof/profile/legacy_java_profile.go

@@ -212,7 +212,7 @@ func parseJavaSamples(pType string, b []byte, p *Profile) ([]byte, map[uint64]*L
 			switch pType {
 			case "heap":
 				const javaHeapzSamplingRate = 524288 // 512K
-				s.NumLabel = map[string][]int64{"bytes": []int64{s.Value[1] / s.Value[0]}}
+				s.NumLabel = map[string][]int64{"bytes": {s.Value[1] / s.Value[0]}}
 				s.Value[0], s.Value[1] = scaleHeapSample(s.Value[0], s.Value[1], javaHeapzSamplingRate)
 			case "contention":
 				if period := p.Period; period != 0 {

src/cmd/vendor/github.com/google/pprof/profile/profile.go

@@ -596,10 +596,11 @@ func (p *Profile) HasFileLines() bool {
 }
 
 // Unsymbolizable returns true if a mapping points to a binary for which
-// locations can't be symbolized in principle, at least now.
+// locations can't be symbolized in principle, at least now. Examples are
+// "[vdso]", [vsyscall]" and some others, see the code.
 func (m *Mapping) Unsymbolizable() bool {
 	name := filepath.Base(m.File)
-	return name == "[vdso]" || strings.HasPrefix(name, "linux-vdso") || name == "[heap]" || strings.HasPrefix(m.File, "/dev/dri/")
+	return strings.HasPrefix(name, "[") || strings.HasPrefix(name, "linux-vdso") || strings.HasPrefix(m.File, "/dev/dri/")
 }
 
 // Copy makes a fully independent copy of a profile.

src/cmd/vendor/github.com/google/pprof/profile/profile_test.go

@@ -230,40 +230,40 @@ var testProfile = &Profile{
 			Location: []*Location{cpuL[0]},
 			Value:    []int64{1000, 1000},
 			Label: map[string][]string{
-				"key1": []string{"tag1"},
-				"key2": []string{"tag1"},
+				"key1": {"tag1"},
+				"key2": {"tag1"},
 			},
 		},
 		{
 			Location: []*Location{cpuL[1], cpuL[0]},
 			Value:    []int64{100, 100},
 			Label: map[string][]string{
-				"key1": []string{"tag2"},
-				"key3": []string{"tag2"},
+				"key1": {"tag2"},
+				"key3": {"tag2"},
 			},
 		},
 		{
 			Location: []*Location{cpuL[2], cpuL[0]},
 			Value:    []int64{10, 10},
 			Label: map[string][]string{
-				"key1": []string{"tag3"},
-				"key2": []string{"tag2"},
+				"key1": {"tag3"},
+				"key2": {"tag2"},
 			},
 		},
 		{
 			Location: []*Location{cpuL[3], cpuL[0]},
 			Value:    []int64{10000, 10000},
 			Label: map[string][]string{
-				"key1": []string{"tag4"},
-				"key2": []string{"tag1"},
+				"key1": {"tag4"},
+				"key2": {"tag1"},
 			},
 		},
 		{
 			Location: []*Location{cpuL[4], cpuL[0]},
 			Value:    []int64{1, 1},
 			Label: map[string][]string{
-				"key1": []string{"tag4"},
-				"key2": []string{"tag1"},
+				"key1": {"tag4"},
+				"key2": {"tag1"},
 			},
 		},
 	},
@@ -273,10 +273,10 @@ var testProfile = &Profile{
 }
 
 var aggTests = map[string]aggTest{
-	"precise":         aggTest{true, true, true, true, 5},
-	"fileline":        aggTest{false, true, true, true, 4},
-	"inline_function": aggTest{false, true, false, true, 3},
-	"function":        aggTest{false, true, false, false, 2},
+	"precise":         {true, true, true, true, 5},
+	"fileline":        {false, true, true, true, 4},
+	"inline_function": {false, true, false, true, 3},
+	"function":        {false, true, false, false, 2},
 }
 
 type aggTest struct {

src/cmd/vendor/github.com/google/pprof/profile/proto.go

@@ -71,7 +71,7 @@ func encodeLength(b *buffer, tag int, len int) {
 
 func encodeUint64(b *buffer, tag int, x uint64) {
 	// append varint to b.data
-	encodeVarint(b, uint64(tag)<<3|0)
+	encodeVarint(b, uint64(tag)<<3)
 	encodeVarint(b, x)
 }
 
@@ -145,13 +145,6 @@ func encodeStrings(b *buffer, tag int, x []string) {
 	}
 }
 
-func encodeStringOpt(b *buffer, tag int, x string) {
-	if x == "" {
-		return
-	}
-	encodeString(b, tag, x)
-}
-
 func encodeBool(b *buffer, tag int, x bool) {
 	if x {
 		encodeUint64(b, tag, 1)
@@ -161,10 +154,9 @@ func encodeBool(b *buffer, tag int, x bool) {
 }
 
 func encodeBoolOpt(b *buffer, tag int, x bool) {
-	if x == false {
-		return
-	}
+	if x {
 		encodeBool(b, tag, x)
+	}
 }
 
 func encodeMessage(b *buffer, tag int, m message) {

src/cmd/vendor/github.com/google/pprof/profile/proto_test.go

@@ -100,8 +100,8 @@ var all = &Profile{
 		{
 			Location: []*Location{testL[0], testL[1], testL[2], testL[1], testL[1]},
 			Label: map[string][]string{
-				"key1": []string{"value1"},
-				"key2": []string{"value2"},
+				"key1": {"value1"},
+				"key2": {"value2"},
 			},
 			Value: []int64{10, 20},
 		},
@@ -109,12 +109,12 @@ var all = &Profile{
 			Location: []*Location{testL[1], testL[2], testL[0], testL[1]},
 			Value:    []int64{30, 40},
 			Label: map[string][]string{
-				"key1": []string{"value1"},
-				"key2": []string{"value2"},
+				"key1": {"value1"},
+				"key2": {"value2"},
 			},
 			NumLabel: map[string][]int64{
-				"key1": []int64{1, 2},
-				"key2": []int64{3, 4},
+				"key1": {1, 2},
+				"key2": {3, 4},
 			},
 		},
 	},

src/cmd/vendor/github.com/google/pprof/profile/prune.go

@@ -22,6 +22,39 @@ import (
 	"strings"
 )
 
+var (
+	reservedNames = []string{"(anonymous namespace)", "operator()"}
+	bracketRx     = func() *regexp.Regexp {
+		var quotedNames []string
+		for _, name := range append(reservedNames, "(") {
+			quotedNames = append(quotedNames, regexp.QuoteMeta(name))
+		}
+		return regexp.MustCompile(strings.Join(quotedNames, "|"))
+	}()
+)
+
+// simplifyFunc does some primitive simplification of function names.
+func simplifyFunc(f string) string {
+	// Account for leading '.' on the PPC ELF v1 ABI.
+	funcName := strings.TrimPrefix(f, ".")
+	// Account for unsimplified names -- try  to remove the argument list by trimming
+	// starting from the first '(', but skipping reserved names that have '('.
+	for _, ind := range bracketRx.FindAllStringSubmatchIndex(funcName, -1) {
+		foundReserved := false
+		for _, res := range reservedNames {
+			if funcName[ind[0]:ind[1]] == res {
+				foundReserved = true
+				break
+			}
+		}
+		if !foundReserved {
+			funcName = funcName[:ind[0]]
+			break
+		}
+	}
+	return funcName
+}
+
 // Prune removes all nodes beneath a node matching dropRx, and not
 // matching keepRx. If the root node of a Sample matches, the sample
 // will have an empty stack.
@@ -33,12 +66,7 @@ func (p *Profile) Prune(dropRx, keepRx *regexp.Regexp) {
 		var i int
 		for i = len(loc.Line) - 1; i >= 0; i-- {
 			if fn := loc.Line[i].Function; fn != nil && fn.Name != "" {
-				// Account for leading '.' on the PPC ELF v1 ABI.
-				funcName := strings.TrimPrefix(fn.Name, ".")
-				// Account for unsimplified names -- trim starting from the first '('.
-				if index := strings.Index(funcName, "("); index > 0 {
-					funcName = funcName[:index]
-				}
+				funcName := simplifyFunc(fn.Name)
 				if dropRx.MatchString(funcName) {
 					if keepRx == nil || !keepRx.MatchString(funcName) {
 						break
@@ -126,12 +154,7 @@ func (p *Profile) PruneFrom(dropRx *regexp.Regexp) {
 	for _, loc := range p.Location {
 		for i := 0; i < len(loc.Line); i++ {
 			if fn := loc.Line[i].Function; fn != nil && fn.Name != "" {
-				// Account for leading '.' on the PPC ELF v1 ABI.
-				funcName := strings.TrimPrefix(fn.Name, ".")
-				// Account for unsimplified names -- trim starting from the first '('.
-				if index := strings.Index(funcName, "("); index > 0 {
-					funcName = funcName[:index]
-				}
+				funcName := simplifyFunc(fn.Name)
 				if dropRx.MatchString(funcName) {
 					// Found matching entry to prune.
 					pruneBeneath[loc.ID] = true

src/cmd/vendor/github.com/google/pprof/profile/prune_test.go

@@ -25,6 +25,7 @@ func TestPrune(t *testing.T) {
 		want string
 	}{
 		{in1, out1},
+		{in2, out2},
 	} {
 		in := test.in.Copy()
 		in.RemoveUninteresting()
@@ -50,6 +51,10 @@ var funs = []*Function{
 	{ID: 4, Name: "fun3", SystemName: "fun3", Filename: "fun.c"},
 	{ID: 5, Name: "fun4", SystemName: "fun4", Filename: "fun.c"},
 	{ID: 6, Name: "fun5", SystemName: "fun5", Filename: "fun.c"},
+	{ID: 7, Name: "unsimplified_fun(int)", SystemName: "unsimplified_fun(int)", Filename: "fun.c"},
+	{ID: 8, Name: "Foo::(anonymous namespace)::Test::Bar", SystemName: "Foo::(anonymous namespace)::Test::Bar", Filename: "fun.c"},
+	{ID: 9, Name: "Hello::(anonymous namespace)::World(const Foo::(anonymous namespace)::Test::Bar)", SystemName: "Hello::(anonymous namespace)::World(const Foo::(anonymous namespace)::Test::Bar)", Filename: "fun.c"},
+	{ID: 10, Name: "Foo::operator()(::Bar)", SystemName: "Foo::operator()(::Bar)", Filename: "fun.c"},
 }
 
 var locs1 = []*Location{
@@ -137,3 +142,89 @@ Locations
      4: 0x0 fun5 fun.c:2 s=0
 Mappings
 `
+
+var locs2 = []*Location{
+	{
+		ID: 1,
+		Line: []Line{
+			{Function: funs[0], Line: 1},
+		},
+	},
+	{
+		ID: 2,
+		Line: []Line{
+			{Function: funs[6], Line: 1},
+		},
+	},
+	{
+		ID: 3,
+		Line: []Line{
+			{Function: funs[7], Line: 1},
+		},
+	},
+	{
+		ID: 4,
+		Line: []Line{
+			{Function: funs[8], Line: 1},
+		},
+	},
+	{
+		ID: 5,
+		Line: []Line{
+			{Function: funs[9], Line: 1},
+		},
+	},
+}
+
+var in2 = &Profile{
+	PeriodType:    &ValueType{Type: "cpu", Unit: "milliseconds"},
+	Period:        1,
+	DurationNanos: 10e9,
+	SampleType: []*ValueType{
+		{Type: "samples", Unit: "count"},
+		{Type: "cpu", Unit: "milliseconds"},
+	},
+	Sample: []*Sample{
+		// Unsimplified name with parameters shouldn't match.
+		{
+			Location: []*Location{locs2[1], locs2[0]},
+			Value:    []int64{1, 1},
+		},
+		// .*Foo::.*::Bar.* should (and will be dropped) regardless of the anonymous namespace.
+		{
+			Location: []*Location{locs2[2], locs2[0]},
+			Value:    []int64{1, 1},
+		},
+		// .*Foo::.*::Bar.* shouldn't match inside the parameter list.
+		{
+			Location: []*Location{locs2[3], locs2[0]},
+			Value:    []int64{1, 1},
+		},
+		// .*operator\(\) should match, regardless of parameters.
+		{
+			Location: []*Location{locs2[4], locs2[0]},
+			Value:    []int64{1, 1},
+		},
+	},
+	Location:   locs2,
+	Function:   funs,
+	DropFrames: `unsimplified_fun\(int\)|.*Foo::.*::Bar.*|.*operator\(\)`,
+}
+
+const out2 = `PeriodType: cpu milliseconds
+Period: 1
+Duration: 10s
+Samples:
+samples/count cpu/milliseconds
+          1          1: 2 1
+          1          1: 1
+          1          1: 4 1
+          1          1: 1
+Locations
+     1: 0x0 main main.c:1 s=0
+     2: 0x0 unsimplified_fun(int) fun.c:1 s=0
+     3: 0x0 Foo::(anonymous namespace)::Test::Bar fun.c:1 s=0
+     4: 0x0 Hello::(anonymous namespace)::World(const Foo::(anonymous namespace)::Test::Bar) fun.c:1 s=0
+     5: 0x0 Foo::operator()(::Bar) fun.c:1 s=0
+Mappings
+`

src/cmd/vendor/vendor.json

@@ -9,8 +9,8 @@
 		{
 			"canonical": "github.com/google/pprof",
 			"local": "github.com/google/pprof",
-			"revision": "dec22b42d9eee442222c36c8da24ddc9905e7ee6",
-			"revisionTime": "2017-03-01T19:58:13Z",
+			"revision": "fffc5831a499a958516664a34cb7ba2b9e228793",
+			"revisionTime": "2017-05-27T06:02:07Z",
 		},
 		{
 			"canonical": "golang.org/x/arch/x86/x86asm",