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libgo: update to Go 1.11.1 release 

Reviewed-on: https://go-review.googlesource.com/c/140277

From-SVN: r264932
This commit is contained in:
Ian Lance Taylor 2018-10-08 14:21:30 +00:00
parent a3368b8ea1
commit 3cbb7cbb09
28 changed files with 401 additions and 169 deletions
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2
gcc/go/gofrontend/MERGE
View File

@ -1,4 +1,4 @@
d0739c13ca3686df1f8d0fae7c6c5caaed058503
a9da4d34a2f878a5058f7e7d2beef52aa62471a1
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

2
libgo/MERGE
View File

@ -1,4 +1,4 @@
41e62b8c49d21659b48a95216e3062032285250f
26957168c4c0cdcc7ca4f0b19d0eb19474d224ac
The first line of this file holds the git revision number of the
last merge done from the master library sources.

2
libgo/VERSION
View File

@ -1 +1 @@
go1.11
go1.11.1

6
libgo/go/cmd/go/alldocs.go
View File

@ -1449,6 +1449,12 @@
// The directory where the go command will write
// temporary source files, packages, and binaries.
//
// Each entry in the GOFLAGS list must be a standalone flag.
// Because the entries are space-separated, flag values must
// not contain spaces. In some cases, you can provide multiple flag
// values instead: for example, to set '-ldflags=-s -w'
// you can use 'GOFLAGS=-ldflags=-s -ldflags=-w'.
//
// Environment variables for use with cgo:
//
// CC

6
libgo/go/cmd/go/internal/help/helpdoc.go
View File

@ -507,6 +507,12 @@ General-purpose environment variables:
The directory where the go command will write
temporary source files, packages, and binaries.
Each entry in the GOFLAGS list must be a standalone flag.
Because the entries are space-separated, flag values must
not contain spaces. In some cases, you can provide multiple flag
values instead: for example, to set '-ldflags=-s -w'
you can use 'GOFLAGS=-ldflags=-s -ldflags=-w'.
Environment variables for use with cgo:
CC

4
libgo/go/cmd/go/internal/work/exec.go
View File

@ -224,7 +224,9 @@ func (b *Builder) buildActionID(a *Action) cache.ActionID {
if len(p.SFiles) > 0 {
fmt.Fprintf(h, "asm %q %q %q\n", b.toolID("asm"), forcedAsmflags, p.Internal.Asmflags)
}
fmt.Fprintf(h, "GO$GOARCH=%s\n", os.Getenv("GO"+strings.ToUpper(cfg.BuildContext.GOARCH))) // GO386, GOARM, etc
// GO386, GOARM, GOMIPS, etc.
baseArch := strings.TrimSuffix(cfg.BuildContext.GOARCH, "le")
fmt.Fprintf(h, "GO$GOARCH=%s\n", os.Getenv("GO"+strings.ToUpper(baseArch)))
// TODO(rsc): Convince compiler team not to add more magic environment variables,
// or perhaps restrict the environment variables passed to subprocesses.

1
libgo/go/cmd/go/internal/work/security.go
View File

@ -170,6 +170,7 @@ var validLinkerFlags = []*regexp.Regexp{
re(`-Wl,-e[=,][a-zA-Z0-9]*`),
re(`-Wl,--enable-new-dtags`),
re(`-Wl,--end-group`),
re(`-Wl,--(no-)?export-dynamic`),
re(`-Wl,-framework,[^,@\-][^,]+`),
re(`-Wl,-headerpad_max_install_names`),
re(`-Wl,--no-undefined`),

3
libgo/go/cmd/go/script_test.go
View File

@ -635,6 +635,9 @@ func scriptMatch(ts *testScript, neg bool, args []string, text, name string) {
text = string(data)
}
// Matching against workdir would be misleading.
text = strings.Replace(text, ts.workdir, "$WORK", -1)
if neg {
if re.MatchString(text) {
if isGrep {

4
libgo/go/crypto/x509/verify.go
View File

@ -894,8 +894,8 @@ func validHostname(host string) bool {
if c == '-' && j != 0 {
continue
}
if c == '_' {
// _ is not a valid character in hostnames, but it's commonly
if c == '_' || c == ':' {
// Not valid characters in hostnames, but commonly
// found in deployments outside the WebPKI.
continue
}

1
libgo/go/crypto/x509/verify_test.go
View File

@ -1881,6 +1881,7 @@ func TestValidHostname(t *testing.T) {
{"foo.*.example.com", false},
{"exa_mple.com", true},
{"foo,bar", false},
{"project-dev:us-central1:main", true},
}
for _, tt := range tests {
if got := validHostname(tt.host); got != tt.want {

6
libgo/go/encoding/json/decode.go
View File

@ -672,6 +672,7 @@ func (d *decodeState) object(v reflect.Value) error {
}
var mapElem reflect.Value
originalErrorContext := d.errorContext
for {
// Read opening " of string key or closing }.
@ -832,8 +833,7 @@ func (d *decodeState) object(v reflect.Value) error {
return errPhase
}
d.errorContext.Struct = ""
d.errorContext.Field = ""
d.errorContext = originalErrorContext
}
return nil
}
@ -991,7 +991,7 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
if fromQuoted {
return fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())
}
return &UnmarshalTypeError{Value: "number", Type: v.Type(), Offset: int64(d.readIndex())}
d.saveError(&UnmarshalTypeError{Value: "number", Type: v.Type(), Offset: int64(d.readIndex())})
case reflect.Interface:
n, err := d.convertNumber(s)
if err != nil {

17
libgo/go/encoding/json/decode_test.go
View File

@ -371,6 +371,10 @@ func (b *intWithPtrMarshalText) UnmarshalText(data []byte) error {
return (*intWithMarshalText)(b).UnmarshalText(data)
}
type mapStringToStringData struct {
Data map[string]string `json:"data"`
}
type unmarshalTest struct {
in string
ptr interface{}
@ -401,6 +405,7 @@ var unmarshalTests = []unmarshalTest{
{in: `"invalid: \uD834x\uDD1E"`, ptr: new(string), out: "invalid: \uFFFDx\uFFFD"},
{in: "null", ptr: new(interface{}), out: nil},
{in: `{"X": [1,2,3], "Y": 4}`, ptr: new(T), out: T{Y: 4}, err: &UnmarshalTypeError{"array", reflect.TypeOf(""), 7, "T", "X"}},
{in: `{"X": 23}`, ptr: new(T), out: T{}, err: &UnmarshalTypeError{"number", reflect.TypeOf(""), 8, "T", "X"}}, {in: `{"x": 1}`, ptr: new(tx), out: tx{}},
{in: `{"x": 1}`, ptr: new(tx), out: tx{}},
{in: `{"x": 1}`, ptr: new(tx), err: fmt.Errorf("json: unknown field \"x\""), disallowUnknownFields: true},
{in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: float64(1), F2: int32(2), F3: Number("3")}},
@ -866,6 +871,18 @@ var unmarshalTests = []unmarshalTest{
err: fmt.Errorf("json: unknown field \"extra\""),
disallowUnknownFields: true,
},
// issue 26444
// UnmarshalTypeError without field & struct values
{
in: `{"data":{"test1": "bob", "test2": 123}}`,
ptr: new(mapStringToStringData),
err: &UnmarshalTypeError{Value: "number", Type: reflect.TypeOf(""), Offset: 37, Struct: "mapStringToStringData", Field: "data"},
},
{
in: `{"data":{"test1": 123, "test2": "bob"}}`,
ptr: new(mapStringToStringData),
err: &UnmarshalTypeError{Value: "number", Type: reflect.TypeOf(""), Offset: 21, Struct: "mapStringToStringData", Field: "data"},
},
}
func TestMarshal(t *testing.T) {

2
libgo/go/go/types/api_test.go
View File

@ -262,6 +262,8 @@ func TestTypesInfo(t *testing.T) {
{`package x0; func _() { var x struct {f string}; x.f := 0 }`, `x.f`, `string`},
{`package x1; func _() { var z string; type x struct {f string}; y := &x{q: z}}`, `z`, `string`},
{`package x2; func _() { var a, b string; type x struct {f string}; z := &x{f: a; f: b;}}`, `b`, `string`},
{`package x3; var x = panic("");`, `panic`, `func(interface{})`},
{`package x4; func _() { panic("") }`, `panic`, `func(interface{})`},
}
for _, test := range tests {

2
libgo/go/go/types/builtins.go
View File

@ -476,7 +476,7 @@ func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ b
// panic(x)
// record panic call if inside a function with result parameters
// (for use in Checker.isTerminating)
if check.sig.results.Len() > 0 {
if check.sig != nil && check.sig.results.Len() > 0 {
// function has result parameters
p := check.isPanic
if p == nil {

115
libgo/go/net/dnsclient_unix.go
View File

@ -27,6 +27,20 @@ import (
"golang_org/x/net/dns/dnsmessage"
)
var (
errLameReferral = errors.New("lame referral")
errCannotUnmarshalDNSMessage = errors.New("cannot unmarshal DNS message")
errCannotMarshalDNSMessage = errors.New("cannot marshal DNS message")
errServerMisbehaving = errors.New("server misbehaving")
errInvalidDNSResponse = errors.New("invalid DNS response")
errNoAnswerFromDNSServer = errors.New("no answer from DNS server")
// errServerTemporarlyMisbehaving is like errServerMisbehaving, except
// that when it gets translated to a DNSError, the IsTemporary field
// gets set to true.
errServerTemporarlyMisbehaving = errors.New("server misbehaving")
)
func newRequest(q dnsmessage.Question) (id uint16, udpReq, tcpReq []byte, err error) {
id = uint16(rand.Int()) ^ uint16(time.Now().UnixNano())
b := dnsmessage.NewBuilder(make([]byte, 2, 514), dnsmessage.Header{ID: id, RecursionDesired: true})
@ -105,14 +119,14 @@ func dnsStreamRoundTrip(c Conn, id uint16, query dnsmessage.Question, b []byte)
var p dnsmessage.Parser
h, err := p.Start(b[:n])
if err != nil {
return dnsmessage.Parser{}, dnsmessage.Header{}, errors.New("cannot unmarshal DNS message")
return dnsmessage.Parser{}, dnsmessage.Header{}, errCannotUnmarshalDNSMessage
}
q, err := p.Question()
if err != nil {
return dnsmessage.Parser{}, dnsmessage.Header{}, errors.New("cannot unmarshal DNS message")
return dnsmessage.Parser{}, dnsmessage.Header{}, errCannotUnmarshalDNSMessage
}
if !checkResponse(id, query, h, q) {
return dnsmessage.Parser{}, dnsmessage.Header{}, errors.New("invalid DNS response")
return dnsmessage.Parser{}, dnsmessage.Header{}, errInvalidDNSResponse
}
return p, h, nil
}
@ -122,7 +136,7 @@ func (r *Resolver) exchange(ctx context.Context, server string, q dnsmessage.Que
q.Class = dnsmessage.ClassINET
id, udpReq, tcpReq, err := newRequest(q)
if err != nil {
return dnsmessage.Parser{}, dnsmessage.Header{}, errors.New("cannot marshal DNS message")
return dnsmessage.Parser{}, dnsmessage.Header{}, errCannotMarshalDNSMessage
}
for _, network := range []string{"udp", "tcp"} {
ctx, cancel := context.WithDeadline(ctx, time.Now().Add(timeout))
@ -147,31 +161,31 @@ func (r *Resolver) exchange(ctx context.Context, server string, q dnsmessage.Que
return dnsmessage.Parser{}, dnsmessage.Header{}, mapErr(err)
}
if err := p.SkipQuestion(); err != dnsmessage.ErrSectionDone {
return dnsmessage.Parser{}, dnsmessage.Header{}, errors.New("invalid DNS response")
return dnsmessage.Parser{}, dnsmessage.Header{}, errInvalidDNSResponse
}
if h.Truncated { // see RFC 5966
continue
}
return p, h, nil
}
return dnsmessage.Parser{}, dnsmessage.Header{}, errors.New("no answer from DNS server")
return dnsmessage.Parser{}, dnsmessage.Header{}, errNoAnswerFromDNSServer
}
// checkHeader performs basic sanity checks on the header.
func checkHeader(p *dnsmessage.Parser, h dnsmessage.Header, name, server string) error {
if h.RCode == dnsmessage.RCodeNameError {
return errNoSuchHost
}
_, err := p.AnswerHeader()
if err != nil && err != dnsmessage.ErrSectionDone {
return &DNSError{
Err: "cannot unmarshal DNS message",
Name: name,
Server: server,
}
return errCannotUnmarshalDNSMessage
}
// libresolv continues to the next server when it receives
// an invalid referral response. See golang.org/issue/15434.
if h.RCode == dnsmessage.RCodeSuccess && !h.Authoritative && !h.RecursionAvailable && err == dnsmessage.ErrSectionDone {
return &DNSError{Err: "lame referral", Name: name, Server: server}
return errLameReferral
}
if h.RCode != dnsmessage.RCodeSuccess && h.RCode != dnsmessage.RCodeNameError {
@ -180,11 +194,10 @@ func checkHeader(p *dnsmessage.Parser, h dnsmessage.Header, name, server string)
// a name error and we didn't get success,
// the server is behaving incorrectly or
// having temporary trouble.
err := &DNSError{Err: "server misbehaving", Name: name, Server: server}
if h.RCode == dnsmessage.RCodeServerFailure {
err.IsTemporary = true
return errServerTemporarlyMisbehaving
}
return err
return errServerMisbehaving
}
return nil
@ -194,28 +207,16 @@ func skipToAnswer(p *dnsmessage.Parser, qtype dnsmessage.Type, name, server stri
for {
h, err := p.AnswerHeader()
if err == dnsmessage.ErrSectionDone {
return &DNSError{
Err: errNoSuchHost.Error(),
Name: name,
Server: server,
}
return errNoSuchHost
}
if err != nil {
return &DNSError{
Err: "cannot unmarshal DNS message",
Name: name,
Server: server,
}
return errCannotUnmarshalDNSMessage
}
if h.Type == qtype {
return nil
}
if err := p.SkipAnswer(); err != nil {
return &DNSError{
Err: "cannot unmarshal DNS message",
Name: name,
Server: server,
}
return errCannotUnmarshalDNSMessage
}
}
}
@ -229,7 +230,7 @@ func (r *Resolver) tryOneName(ctx context.Context, cfg *dnsConfig, name string,
n, err := dnsmessage.NewName(name)
if err != nil {
return dnsmessage.Parser{}, "", errors.New("cannot marshal DNS message")
return dnsmessage.Parser{}, "", errCannotMarshalDNSMessage
}
q := dnsmessage.Question{
Name: n,
@ -243,38 +244,62 @@ func (r *Resolver) tryOneName(ctx context.Context, cfg *dnsConfig, name string,
p, h, err := r.exchange(ctx, server, q, cfg.timeout)
if err != nil {
lastErr = &DNSError{
dnsErr := &DNSError{
Err: err.Error(),
Name: name,
Server: server,
}
if nerr, ok := err.(Error); ok && nerr.Timeout() {
lastErr.(*DNSError).IsTimeout = true
dnsErr.IsTimeout = true
}
// Set IsTemporary for socket-level errors. Note that this flag
// may also be used to indicate a SERVFAIL response.
if _, ok := err.(*OpError); ok {
lastErr.(*DNSError).IsTemporary = true
dnsErr.IsTemporary = true
}
lastErr = dnsErr
continue
}
// The name does not exist, so trying another server won't help.
//
// TODO: indicate this in a more obvious way, such as a field on DNSError?
if h.RCode == dnsmessage.RCodeNameError {
return dnsmessage.Parser{}, "", &DNSError{Err: errNoSuchHost.Error(), Name: name, Server: server}
}
lastErr = checkHeader(&p, h, name, server)
if lastErr != nil {
if err := checkHeader(&p, h, name, server); err != nil {
dnsErr := &DNSError{
Err: err.Error(),
Name: name,
Server: server,
}
if err == errServerTemporarlyMisbehaving {
dnsErr.IsTemporary = true
}
if err == errNoSuchHost {
// The name does not exist, so trying
// another server won't help.
//
// TODO: indicate this in a more
// obvious way, such as a field on
// DNSError?
return p, server, dnsErr
}
lastErr = dnsErr
continue
}
lastErr = skipToAnswer(&p, qtype, name, server)
if lastErr == nil {
err = skipToAnswer(&p, qtype, name, server)
if err == nil {
return p, server, nil
}
lastErr = &DNSError{
Err: err.Error(),
Name: name,
Server: server,
}
if err == errNoSuchHost {
// The name does not exist, so trying another
// server won't help.
//
// TODO: indicate this in a more obvious way,
// such as a field on DNSError?
return p, server, lastErr
}
}
}
return dnsmessage.Parser{}, "", lastErr

196
libgo/go/net/dnsclient_unix_test.go
View File

@ -1427,28 +1427,35 @@ func TestDNSGoroutineRace(t *testing.T) {
}
}
func lookupWithFake(fake fakeDNSServer, name string, typ dnsmessage.Type) error {
r := Resolver{PreferGo: true, Dial: fake.DialContext}
resolvConf.mu.RLock()
conf := resolvConf.dnsConfig
resolvConf.mu.RUnlock()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
_, _, err := r.tryOneName(ctx, conf, name, typ)
return err
}
// Issue 8434: verify that Temporary returns true on an error when rcode
// is SERVFAIL
func TestIssue8434(t *testing.T) {
msg := dnsmessage.Message{
Header: dnsmessage.Header{
RCode: dnsmessage.RCodeServerFailure,
err := lookupWithFake(fakeDNSServer{
rh: func(n, _ string, q dnsmessage.Message, _ time.Time) (dnsmessage.Message, error) {
return dnsmessage.Message{
Header: dnsmessage.Header{
ID: q.ID,
Response: true,
RCode: dnsmessage.RCodeServerFailure,
},
Questions: q.Questions,
}, nil
},
}
b, err := msg.Pack()
if err != nil {
t.Fatal("Pack failed:", err)
}
var p dnsmessage.Parser
h, err := p.Start(b)
if err != nil {
t.Fatal("Start failed:", err)
}
if err := p.SkipAllQuestions(); err != nil {
t.Fatal("SkipAllQuestions failed:", err)
}
err = checkHeader(&p, h, "golang.org", "foo:53")
}, "golang.org.", dnsmessage.TypeALL)
if err == nil {
t.Fatal("expected an error")
}
@ -1464,50 +1471,76 @@ func TestIssue8434(t *testing.T) {
}
}
// Issue 12778: verify that NXDOMAIN without RA bit errors as
// "no such host" and not "server misbehaving"
// TestNoSuchHost verifies that tryOneName works correctly when the domain does
// not exist.
//
// Issue 12778: verify that NXDOMAIN without RA bit errors as "no such host"
// and not "server misbehaving"
//
// Issue 25336: verify that NXDOMAIN errors fail fast.
func TestIssue12778(t *testing.T) {
lookups := 0
fake := fakeDNSServer{
rh: func(n, _ string, q dnsmessage.Message, _ time.Time) (dnsmessage.Message, error) {
lookups++
return dnsmessage.Message{
Header: dnsmessage.Header{
ID: q.ID,
Response: true,
RCode: dnsmessage.RCodeNameError,
RecursionAvailable: false,
},
Questions: q.Questions,
}, nil
//
// Issue 27525: verify that empty answers fail fast.
func TestNoSuchHost(t *testing.T) {
tests := []struct {
name string
f func(string, string, dnsmessage.Message, time.Time) (dnsmessage.Message, error)
}{
{
"NXDOMAIN",
func(n, _ string, q dnsmessage.Message, _ time.Time) (dnsmessage.Message, error) {
return dnsmessage.Message{
Header: dnsmessage.Header{
ID: q.ID,
Response: true,
RCode: dnsmessage.RCodeNameError,
RecursionAvailable: false,
},
Questions: q.Questions,
}, nil
},
},
{
"no answers",
func(n, _ string, q dnsmessage.Message, _ time.Time) (dnsmessage.Message, error) {
return dnsmessage.Message{
Header: dnsmessage.Header{
ID: q.ID,
Response: true,
RCode: dnsmessage.RCodeSuccess,
RecursionAvailable: false,
Authoritative: true,
},
Questions: q.Questions,
}, nil
},
},
}
r := Resolver{PreferGo: true, Dial: fake.DialContext}
resolvConf.mu.RLock()
conf := resolvConf.dnsConfig
resolvConf.mu.RUnlock()
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
lookups := 0
err := lookupWithFake(fakeDNSServer{
rh: func(n, s string, q dnsmessage.Message, d time.Time) (dnsmessage.Message, error) {
lookups++
return test.f(n, s, q, d)
},
}, ".", dnsmessage.TypeALL)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
if lookups != 1 {
t.Errorf("got %d lookups, wanted 1", lookups)
}
_, _, err := r.tryOneName(ctx, conf, ".", dnsmessage.TypeALL)
if lookups != 1 {
t.Errorf("got %d lookups, wanted 1", lookups)
}
if err == nil {
t.Fatal("expected an error")
}
de, ok := err.(*DNSError)
if !ok {
t.Fatalf("err = %#v; wanted a *net.DNSError", err)
}
if de.Err != errNoSuchHost.Error() {
t.Fatalf("Err = %#v; wanted %q", de.Err, errNoSuchHost.Error())
if err == nil {
t.Fatal("expected an error")
}
de, ok := err.(*DNSError)
if !ok {
t.Fatalf("err = %#v; wanted a *net.DNSError", err)
}
if de.Err != errNoSuchHost.Error() {
t.Fatalf("Err = %#v; wanted %q", de.Err, errNoSuchHost.Error())
}
})
}
}
@ -1535,3 +1568,56 @@ func TestDNSDialTCP(t *testing.T) {
t.Fatal("exhange failed:", err)
}
}
// Issue 27763: verify that two strings in one TXT record are concatenated.
func TestTXTRecordTwoStrings(t *testing.T) {
fake := fakeDNSServer{
rh: func(n, _ string, q dnsmessage.Message, _ time.Time) (dnsmessage.Message, error) {
r := dnsmessage.Message{
Header: dnsmessage.Header{
ID: q.Header.ID,
Response: true,
RCode: dnsmessage.RCodeSuccess,
},
Questions: q.Questions,
Answers: []dnsmessage.Resource{
{
Header: dnsmessage.ResourceHeader{
Name: q.Questions[0].Name,
Type: dnsmessage.TypeA,
Class: dnsmessage.ClassINET,
},
Body: &dnsmessage.TXTResource{
TXT: []string{"string1 ", "string2"},
},
},
{
Header: dnsmessage.ResourceHeader{
Name: q.Questions[0].Name,
Type: dnsmessage.TypeA,
Class: dnsmessage.ClassINET,
},
Body: &dnsmessage.TXTResource{
TXT: []string{"onestring"},
},
},
},
}
return r, nil
},
}
r := Resolver{PreferGo: true, Dial: fake.DialContext}
txt, err := r.lookupTXT(context.Background(), "golang.org")
if err != nil {
t.Fatal("LookupTXT failed:", err)
}
if want := 2; len(txt) != want {
t.Fatalf("len(txt), got %d, want %d", len(txt), want)
}
if want := "string1 string2"; txt[0] != want {
t.Errorf("txt[0], got %q, want %q", txt[0], want)
}
if want := "onestring"; txt[1] != want {
t.Errorf("txt[1], got %q, want %q", txt[1], want)
}
}

4
libgo/go/net/http/roundtrip_js.go
View File

@ -116,7 +116,9 @@ func (t *Transport) RoundTrip(req *Request) (*Response, error) {
b := result.Get("body")
var body io.ReadCloser
if b != js.Undefined() {
// The body is undefined when the browser does not support streaming response bodies (Firefox),
// and null in certain error cases, i.e. when the request is blocked because of CORS settings.
if b != js.Undefined() && b != js.Null() {
body = &streamReader{stream: b.Call("getReader")}
} else {
// Fall back to using ArrayBuffer

18
libgo/go/net/lookup_unix.go
View File

@ -299,11 +299,21 @@ func (r *Resolver) lookupTXT(ctx context.Context, name string) ([]string, error)
Server: server,
}
}
if len(txts) == 0 {
txts = txt.TXT
} else {
txts = append(txts, txt.TXT...)
// Multiple strings in one TXT record need to be
// concatenated without separator to be consistent
// with previous Go resolver.
n := 0
for _, s := range txt.TXT {
n += len(s)
}
txtJoin := make([]byte, 0, n)
for _, s := range txt.TXT {
txtJoin = append(txtJoin, s...)
}
if len(txts) == 0 {
txts = make([]string, 0, 1)
}
txts = append(txts, string(txtJoin))
}
return txts, nil
}

65
libgo/go/net/splice_test.go
View File

@ -124,6 +124,7 @@ func testSpliceBig(t *testing.T) {
func testSpliceHonorsLimitedReader(t *testing.T) {
t.Run("stopsAfterN", testSpliceStopsAfterN)
t.Run("updatesN", testSpliceUpdatesN)
t.Run("readerAtLimit", testSpliceReaderAtLimit)
}
func testSpliceStopsAfterN(t *testing.T) {
@ -210,7 +211,7 @@ func testSpliceUpdatesN(t *testing.T) {
}
}
func testSpliceReaderAtEOF(t *testing.T) {
func testSpliceReaderAtLimit(t *testing.T) {
clientUp, serverUp, err := spliceTestSocketPair("tcp")
if err != nil {
t.Fatal(err)
@ -224,25 +225,67 @@ func testSpliceReaderAtEOF(t *testing.T) {
defer clientDown.Close()
defer serverDown.Close()
serverUp.Close()
_, err, handled := splice(serverDown.(*TCPConn).fd, serverUp)
lr := &io.LimitedReader{
N: 0,
R: serverUp,
}
_, err, handled := splice(serverDown.(*TCPConn).fd, lr)
if !handled {
if serr, ok := err.(*os.SyscallError); ok && serr.Syscall == "pipe2" && serr.Err == syscall.ENOSYS {
t.Skip("pipe2 not supported")
}
t.Errorf("closed connection: got err = %v, handled = %t, want handled = true", err, handled)
}
lr := &io.LimitedReader{
N: 0,
R: serverUp,
}
_, err, handled = splice(serverDown.(*TCPConn).fd, lr)
if !handled {
t.Errorf("exhausted LimitedReader: got err = %v, handled = %t, want handled = true", err, handled)
}
}
func testSpliceReaderAtEOF(t *testing.T) {
clientUp, serverUp, err := spliceTestSocketPair("tcp")
if err != nil {
t.Fatal(err)
}
defer clientUp.Close()
clientDown, serverDown, err := spliceTestSocketPair("tcp")
if err != nil {
t.Fatal(err)
}
defer clientDown.Close()
serverUp.Close()
// We'd like to call net.splice here and check the handled return
// value, but we disable splice on old Linux kernels.
//
// In that case, poll.Splice and net.splice return a non-nil error
// and handled == false. We'd ideally like to see handled == true
// because the source reader is at EOF, but if we're running on an old
// kernel, and splice is disabled, we won't see EOF from net.splice,
// because we won't touch the reader at all.
//
// Trying to untangle the errors from net.splice and match them
// against the errors created by the poll package would be brittle,
// so this is a higher level test.
//
// The following ReadFrom should return immediately, regardless of
// whether splice is disabled or not. The other side should then
// get a goodbye signal. Test for the goodbye signal.
msg := "bye"
go func() {
serverDown.(*TCPConn).ReadFrom(serverUp)
io.WriteString(serverDown, msg)
serverDown.Close()
}()
buf := make([]byte, 3)
_, err = io.ReadFull(clientDown, buf)
if err != nil {
t.Errorf("clientDown: %v", err)
}
if string(buf) != msg {
t.Errorf("clientDown got %q, want %q", buf, msg)
}
}
func testSpliceIssue25985(t *testing.T) {
front, err := newLocalListener("tcp")
if err != nil {

4
libgo/go/reflect/all_test.go
View File

@ -5864,7 +5864,7 @@ func clobber() {
type funcLayoutTest struct {
rcvr, t Type
size, argsize, retOffset uintptr
stack []byte // pointer bitmap: 1 is pointer, 0 is scalar (or uninitialized)
stack []byte // pointer bitmap: 1 is pointer, 0 is scalar
gc []byte
}
@ -5886,7 +5886,7 @@ func init() {
6 * PtrSize,
4 * PtrSize,
4 * PtrSize,
[]byte{1, 0, 1},
[]byte{1, 0, 1, 0, 1},
[]byte{1, 0, 1, 0, 1},
})

4
libgo/go/reflect/makefunc_ffi.go
View File

@ -33,7 +33,7 @@ func FFICallbackGo(results unsafe.Pointer, params unsafe.Pointer, impl *makeFunc
ap := params
for _, rt := range ftyp.in {
p := unsafe_New(rt)
memmove(p, *(*unsafe.Pointer)(ap), rt.size)
typedmemmove(rt, p, *(*unsafe.Pointer)(ap))
v := Value{rt, p, flag(rt.Kind()) | flagIndir}
in = append(in, v)
ap = (unsafe.Pointer)(uintptr(ap) + ptrSize)
@ -59,7 +59,7 @@ func FFICallbackGo(results unsafe.Pointer, params unsafe.Pointer, impl *makeFunc
if v.flag&flagIndir == 0 && (v.kind() == Ptr || v.kind() == UnsafePointer) {
*(*unsafe.Pointer)(addr) = v.ptr
} else {
memmove(addr, v.ptr, typ.size)
typedmemmove(typ, addr, v.ptr)
}
off += typ.size
}

18
libgo/go/reflect/value.go
View File

@ -323,7 +323,7 @@ var callGC bool // for testing; see TestCallMethodJump
func (v Value) call(op string, in []Value) []Value {
// Get function pointer, type.
t := v.typ
t := (*funcType)(unsafe.Pointer(v.typ))
var (
fn unsafe.Pointer
rcvr Value
@ -472,7 +472,7 @@ func (v Value) call(op string, in []Value) []Value {
// The return value rcvrtype gives the method's actual receiver type.
// The return value t gives the method type signature (without the receiver).
// The return value fn is a pointer to the method code.
func methodReceiver(op string, v Value, methodIndex int) (rcvrtype, t *rtype, fn unsafe.Pointer) {
func methodReceiver(op string, v Value, methodIndex int) (rcvrtype *rtype, t *funcType, fn unsafe.Pointer) {
i := methodIndex
if v.typ.Kind() == Interface {
tt := (*interfaceType)(unsafe.Pointer(v.typ))
@ -489,7 +489,7 @@ func methodReceiver(op string, v Value, methodIndex int) (rcvrtype, t *rtype, fn
}
rcvrtype = iface.itab.typ
fn = unsafe.Pointer(&iface.itab.fun[i])
t = m.typ
t = (*funcType)(unsafe.Pointer(m.typ))
} else {
rcvrtype = v.typ
ms := v.typ.exportedMethods()
@ -501,7 +501,7 @@ func methodReceiver(op string, v Value, methodIndex int) (rcvrtype, t *rtype, fn
panic("reflect: " + op + " of unexported method")
}
fn = unsafe.Pointer(&m.tfn)
t = m.mtyp
t = (*funcType)(unsafe.Pointer(m.mtyp))
}
return
}
@ -2399,10 +2399,14 @@ func mapiternext(it unsafe.Pointer)
//go:noescape
func maplen(m unsafe.Pointer) int
func call(typ *rtype, fnaddr unsafe.Pointer, isInterface bool, isMethod bool, params *unsafe.Pointer, results *unsafe.Pointer)
func call(typ *funcType, fnaddr unsafe.Pointer, isInterface bool, isMethod bool, params *unsafe.Pointer, results *unsafe.Pointer)
func ifaceE2I(t *rtype, src interface{}, dst unsafe.Pointer)
// memmove copies size bytes to dst from src. No write barriers are used.
//go:noescape
func memmove(dst, src unsafe.Pointer, size uintptr)
// typedmemmove copies a value of type t to dst from src.
//go:noescape
func typedmemmove(t *rtype, dst, src unsafe.Pointer)
@ -2412,10 +2416,6 @@ func typedmemmove(t *rtype, dst, src unsafe.Pointer)
//go:noescape
func typedslicecopy(elemType *rtype, dst, src sliceHeader) int
//go:noescape
//extern memmove
func memmove(adst, asrc unsafe.Pointer, n uintptr)
// Dummy annotation marking that the value x escapes,
// for use in cases where the reflect code is so clever that
// the compiler cannot follow.

23
libgo/go/runtime/chan.go
View File

@ -102,7 +102,7 @@ func makechan(t *chantype, size int) *hchan {
// Queue or element size is zero.
c = (*hchan)(mallocgc(hchanSize, nil, true))
// Race detector uses this location for synchronization.
c.buf = unsafe.Pointer(c)
c.buf = c.raceaddr()
case elem.kind&kindNoPointers != 0:
// Elements do not contain pointers.
// Allocate hchan and buf in one call.
@ -166,7 +166,7 @@ func chansend(c *hchan, ep unsafe.Pointer, block bool, callerpc uintptr) bool {
}
if raceenabled {
racereadpc(unsafe.Pointer(c), callerpc, funcPC(chansend))
racereadpc(c.raceaddr(), callerpc, funcPC(chansend))
}
// Fast path: check for failed non-blocking operation without acquiring the lock.
@ -352,8 +352,8 @@ func closechan(c *hchan) {
if raceenabled {
callerpc := getcallerpc()
racewritepc(unsafe.Pointer(c), callerpc, funcPC(closechan))
racerelease(unsafe.Pointer(c))
racewritepc(c.raceaddr(), callerpc, funcPC(closechan))
racerelease(c.raceaddr())
}
c.closed = 1
@ -376,7 +376,7 @@ func closechan(c *hchan) {
gp := sg.g
gp.param = nil
if raceenabled {
raceacquireg(gp, unsafe.Pointer(c))
raceacquireg(gp, c.raceaddr())
}
gp.schedlink.set(glist)
glist = gp
@ -395,7 +395,7 @@ func closechan(c *hchan) {
gp := sg.g
gp.param = nil
if raceenabled {
raceacquireg(gp, unsafe.Pointer(c))
raceacquireg(gp, c.raceaddr())
}
gp.schedlink.set(glist)
glist = gp
@ -477,7 +477,7 @@ func chanrecv(c *hchan, ep unsafe.Pointer, block bool) (selected, received bool)
if c.closed != 0 && c.qcount == 0 {
if raceenabled {
raceacquire(unsafe.Pointer(c))
raceacquire(c.raceaddr())
}
unlock(&c.lock)
if ep != nil {
@ -755,6 +755,15 @@ func (q *waitq) dequeue() *sudog {
}
}
func (c *hchan) raceaddr() unsafe.Pointer {
// Treat read-like and write-like operations on the channel to
// happen at this address. Avoid using the address of qcount
// or dataqsiz, because the len() and cap() builtins read
// those addresses, and we don't want them racing with
// operations like close().
return unsafe.Pointer(&c.buf)
}
func racesync(c *hchan, sg *sudog) {
racerelease(chanbuf(c, 0))
raceacquireg(sg.g, chanbuf(c, 0))

13
libgo/go/runtime/mbarrier.go
View File

@ -309,6 +309,19 @@ func typedmemclr(typ *_type, ptr unsafe.Pointer) {
memclrNoHeapPointers(ptr, typ.size)
}
//go:linkname reflect_typedmemclr reflect.typedmemclr
func reflect_typedmemclr(typ *_type, ptr unsafe.Pointer) {
typedmemclr(typ, ptr)
}
//go:linkname reflect_typedmemclrpartial reflect.typedmemclrpartial
func reflect_typedmemclrpartial(typ *_type, ptr unsafe.Pointer, off, size uintptr) {
if typ.kind&kindNoPointers == 0 {
bulkBarrierPreWrite(uintptr(ptr), 0, size)
}
memclrNoHeapPointers(ptr, size)
}
// memclrHasPointers clears n bytes of typed memory starting at ptr.
// The caller must ensure that the type of the object at ptr has
// pointers, usually by checking typ.kind&kindNoPointers. However, ptr

11
libgo/go/runtime/os_darwin.go
View File

@ -34,6 +34,10 @@ func semacreate(mp *m) {
//go:nosplit
func semasleep(ns int64) int32 {
var start int64
if ns >= 0 {
start = nanotime()
}
mp := getg().m
pthread_mutex_lock(&mp.mutex)
for {
@ -43,8 +47,13 @@ func semasleep(ns int64) int32 {
return 0
}
if ns >= 0 {
spent := nanotime() - start
if spent >= ns {
pthread_mutex_unlock(&mp.mutex)
return -1
}
var t timespec
t.set_nsec(ns)
t.set_nsec(ns - spent)
err := pthread_cond_timedwait_relative_np(&mp.cond, &mp.mutex, &t)
if err == _ETIMEDOUT {
pthread_mutex_unlock(&mp.mutex)

31
libgo/go/runtime/os_netbsd.go
View File

@ -29,15 +29,9 @@ func semacreate(mp *m) {
//go:nosplit
func semasleep(ns int64) int32 {
_g_ := getg()
// Compute sleep deadline.
var tsp *timespec
var ts timespec
var deadline int64
if ns >= 0 {
var nsec int32
ts.set_sec(int64(timediv(ns, 1000000000, &nsec)))
ts.set_nsec(nsec)
tsp = &ts
deadline = nanotime() + ns
}
for {
@ -50,18 +44,21 @@ func semasleep(ns int64) int32 {
}
// Sleep until unparked by semawakeup or timeout.
var tsp *timespec
var ts timespec
if ns >= 0 {
wait := deadline - nanotime()
if wait <= 0 {
return -1
}
var nsec int32
ts.set_sec(timediv(wait, 1000000000, &nsec))
ts.set_nsec(nsec)
tsp = &ts
}
ret := lwp_park(_CLOCK_MONOTONIC, _TIMER_RELTIME, tsp, 0, unsafe.Pointer(&_g_.m.waitsemacount), nil)
if ret == _ETIMEDOUT {
return -1
} else if ret == _EINTR && ns >= 0 {
// Avoid sleeping forever if we keep getting
// interrupted (for example by the profiling
// timer). It would be if tsp upon return had the
// remaining time to sleep, but this is good enough.
var nsec int32
ns /= 2
ts.set_sec(timediv(ns, 1000000000, &nsec))
ts.set_nsec(nsec)
}
}
}

2
libgo/go/runtime/select.go
View File

@ -426,7 +426,7 @@ rclose:
typedmemclr(c.elemtype, cas.elem)
}
if raceenabled {
raceacquire(unsafe.Pointer(c))
raceacquire(c.raceaddr())
}
goto retc

8
libgo/go/runtime/trace/annotation.go
View File

@ -24,13 +24,13 @@ type traceContextKey struct{}
// If the end function is called multiple times, only the first
// call is used in the latency measurement.
//
// ctx, task := trace.NewTask(ctx, "awesome task")
// trace.WithRegion(ctx, prepWork)
// ctx, task := trace.NewTask(ctx, "awesomeTask")
// trace.WithRegion(ctx, "preparation", prepWork)
// // preparation of the task
// go func() { // continue processing the task in a separate goroutine.
// defer task.End()
// trace.WithRegion(ctx, remainingWork)
// }
// trace.WithRegion(ctx, "remainingWork", remainingWork)
// }()
func NewTask(pctx context.Context, taskType string) (ctx context.Context, task *Task) {
pid := fromContext(pctx).id
id := newID()