all: update vendored dependencies for Go 1.16 release

The Go 1.16 code freeze has recently started. This is a time to update
all golang.org/x/... module versions that contribute packages to the
std and cmd modules in the standard library to latest master versions.

Those versions have already gone through code review, and now they
will undergo additional testing during the upcoming freeze period.
If new issues in these dependencies are discovered, we have the freeze
period to address them. By the end of the freeze period, we will have
confidence that the Go 1.16 release and the dependency versions it has
selected are robust.

The dependency module versions that are selected in this commit are:

	github.com/google/pprof v0.0.0-20201007051231-1066cbb265c7
	github.com/ianlancetaylor/demangle v0.0.0-20200414190113-039b1ae3a340
	golang.org/x/arch v0.0.0-20201008161808-52c3e6f60cff
	golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897
	golang.org/x/mod v0.3.1-0.20200828183125-ce943fd02449
	golang.org/x/net v0.0.0-20201029221708-28c70e62bb1d
	golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65
	golang.org/x/text v0.3.4
	golang.org/x/tools v0.0.0-20201110201400-7099162a900a
	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1

This change was created with a program from CL 256357 patch set 3
(which updates golang.org/x modules only) and the latest bundle tool,
but replacing golang.org/x/net version with a slightly older commit
golang/net@28c70e62bb due to #42498:

	$ updatestd -goroot=$HOME/gotip -branch=master
	> go version
	go version devel +ecc3f5112e Thu Nov 5 23:21:33 2020 +0000 darwin/amd64
	> go env GOROOT
	/Users/dmitshur/gotip
	> go version -m /Users/dmitshur/go/bin/bundle
	/Users/dmitshur/go/bin/bundle: go1.15.4
		path	golang.org/x/tools/cmd/bundle
		mod	golang.org/x/tools	v0.0.0-20201110201400-7099162a900a	h1:5E6TPwSBG74zT8xSrVc8W59K4ch4NFobVTnh2BYzHyU=
		dep	golang.org/x/mod	v0.3.0	h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
		dep	golang.org/x/xerrors	v0.0.0-20200804184101-5ec99f83aff1	h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=

	updating module cmd in /Users/dmitshur/gotip/src/cmd
	skipping github.com/chzyer/logex (out of scope, it's not a golang.org/x dependency)
	skipping github.com/chzyer/readline (out of scope, it's not a golang.org/x dependency)
	skipping github.com/chzyer/test (out of scope, it's not a golang.org/x dependency)
	skipping github.com/google/pprof (out of scope, it's not a golang.org/x dependency)
	skipping github.com/ianlancetaylor/demangle (out of scope, it's not a golang.org/x dependency)
	skipping github.com/yuin/goldmark (out of scope, it's not a golang.org/x dependency)
	skipping rsc.io/pdf (out of scope, it's not a golang.org/x dependency)
	> go mod edit -go=1.16
	> go get -d golang.org/x/arch@52c3e6f60cffa0133a3f9b2fc7f6862504a6cba0 golang.org/x/crypto@9e8e0b390897c84cad53ebe9ed2d1d331a5394d9 golang.org/x/mod@ce943fd02449f621243c9ea6e64098e84752b92b golang.org/x/net@28c70e62bb1d140c3f2579fb7bb5095134d9cb1e golang.org/x/sync@67f06af15bc961c363a7260195bcd53487529a21 golang.org/x/sys@35f3e6cf4a65a85bc280e5fe63faed8ac8b25721 golang.org/x/text@22f1617af38ed4cd65b3b96e02bab267e560155c golang.org/x/tools@7099162a900ae8260c5b97cfaf5f374243dfa742 golang.org/x/xerrors@5ec99f83aff198f5fbd629d6c8d8eb38a04218ca
	> go mod tidy
	> go mod vendor

	updating module std in /Users/dmitshur/gotip/src
	> go mod edit -go=1.16
	> go get -d golang.org/x/crypto@9e8e0b390897c84cad53ebe9ed2d1d331a5394d9 golang.org/x/net@28c70e62bb1d140c3f2579fb7bb5095134d9cb1e golang.org/x/sys@35f3e6cf4a65a85bc280e5fe63faed8ac8b25721 golang.org/x/text@22f1617af38ed4cd65b3b96e02bab267e560155c golang.org/x/tools@7099162a900ae8260c5b97cfaf5f374243dfa742
	> go mod tidy
	> go mod vendor

	updating bundles in /Users/dmitshur/gotip/src
	> go generate -run=bundle std cmd

golang.org/x/net will be updated further later, after #42498 is fixed.

github.com/google/pprof and github.com/ianlancetaylor/demangle
contribute packages but are out of scope for this generated CL.

Also rename http2configureTransport in net/http to follow the internal
rename that happened in CL 264017 to fix the build.

For #36905.
Updates #41721.
Updates #42498.

Change-Id: Ifcd2e76f0406e389b6db88041ca51cd0a2115152
Reviewed-on: https://go-review.googlesource.com/c/go/+/266898
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>

src/cmd/go.mod

@@ -6,8 +6,8 @@ require (
 	github.com/google/pprof v0.0.0-20201007051231-1066cbb265c7
 	github.com/ianlancetaylor/demangle v0.0.0-20200414190113-039b1ae3a340 // indirect
 	golang.org/x/arch v0.0.0-20201008161808-52c3e6f60cff
-	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
+	golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897
 	golang.org/x/mod v0.3.1-0.20200828183125-ce943fd02449
-	golang.org/x/sys v0.0.0-20201101102859-da207088b7d1 // indirect
+	golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65 // indirect
-	golang.org/x/tools v0.0.0-20201014170642-d1624618ad65
+	golang.org/x/tools v0.0.0-20201110201400-7099162a900a
 )

src/cmd/go.sum

@@ -12,26 +12,28 @@ golang.org/x/arch v0.0.0-20201008161808-52c3e6f60cff/go.mod h1:flIaEI6LNU6xOCD5P
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
+golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897 h1:pLI5jrR7OSLijeIDcmRxNmw2api+jEfxLoykJVice/E=
-golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.1-0.20200828183125-ce943fd02449 h1:xUIPaMhvROX9dhPvRCenIJtU78+lbEenGbgqB5hfHCQ=
 golang.org/x/mod v0.3.1-0.20200828183125-ce943fd02449/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201101102859-da207088b7d1 h1:a/mKvvZr9Jcc8oKfcmgzyp7OwF73JPWsQLvH1z2Kxck=
+golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65 h1:Qo9oJ566/Sq7N4hrGftVXs8GI2CXBCuOd4S2wHE/e0M=
-golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20201014170642-d1624618ad65 h1:q80OtYaeeySe8Kqg0vjXehHwj5fUTqe3xOvnbi5w3Gg=
+golang.org/x/tools v0.0.0-20201110201400-7099162a900a h1:5E6TPwSBG74zT8xSrVc8W59K4ch4NFobVTnh2BYzHyU=
-golang.org/x/tools v0.0.0-20201014170642-d1624618ad65/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
+golang.org/x/tools v0.0.0-20201110201400-7099162a900a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=

src/cmd/vendor/golang.org/x/sys/windows/memory_windows.go

@@ -16,13 +16,19 @@ const (
 	MEM_RESET_UNDO  = 0x01000000
 	MEM_LARGE_PAGES = 0x20000000
 
-	PAGE_NOACCESS          = 0x01
+	PAGE_NOACCESS          = 0x00000001
-	PAGE_READONLY          = 0x02
+	PAGE_READONLY          = 0x00000002
-	PAGE_READWRITE         = 0x04
+	PAGE_READWRITE         = 0x00000004
-	PAGE_WRITECOPY         = 0x08
+	PAGE_WRITECOPY         = 0x00000008
-	PAGE_EXECUTE_READ      = 0x20
+	PAGE_EXECUTE           = 0x00000010
-	PAGE_EXECUTE_READWRITE = 0x40
+	PAGE_EXECUTE_READ      = 0x00000020
-	PAGE_EXECUTE_WRITECOPY = 0x80
+	PAGE_EXECUTE_READWRITE = 0x00000040
+	PAGE_EXECUTE_WRITECOPY = 0x00000080
+	PAGE_GUARD             = 0x00000100
+	PAGE_NOCACHE           = 0x00000200
+	PAGE_WRITECOMBINE      = 0x00000400
+	PAGE_TARGETS_INVALID   = 0x40000000
+	PAGE_TARGETS_NO_UPDATE = 0x40000000
 
 	QUOTA_LIMITS_HARDWS_MIN_DISABLE = 0x00000002
 	QUOTA_LIMITS_HARDWS_MIN_ENABLE  = 0x00000001

src/cmd/vendor/golang.org/x/sys/windows/syscall_windows.go

@@ -259,6 +259,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
 //sys	CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore
 //sys   CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore
 //sys	CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore
+//sys	CertDeleteCertificateFromStore(certContext *CertContext) (err error) = crypt32.CertDeleteCertificateFromStore
 //sys   CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain
 //sys   CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain
 //sys   CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext
@@ -274,7 +275,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
 //sys	GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode
 //sys	SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode
 //sys	GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo
-//sys	SetConsoleCursorPosition(console Handle, position Coord) (err error) = kernel32.SetConsoleCursorPosition
+//sys	setConsoleCursorPosition(console Handle, position uint32) (err error) = kernel32.SetConsoleCursorPosition
 //sys	WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW
 //sys	ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW
 //sys	CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot
@@ -1479,3 +1480,7 @@ func getUILanguages(flags uint32, f func(flags uint32, numLanguages *uint32, buf
 		return languages, nil
 	}
 }
+
+func SetConsoleCursorPosition(console Handle, position Coord) error {
+	return setConsoleCursorPosition(console, *((*uint32)(unsafe.Pointer(&position))))
+}

src/cmd/vendor/golang.org/x/sys/windows/zsyscall_windows.go

@@ -138,6 +138,7 @@ var (
 	procCertAddCertificateContextToStore                     = modcrypt32.NewProc("CertAddCertificateContextToStore")
 	procCertCloseStore                                       = modcrypt32.NewProc("CertCloseStore")
 	procCertCreateCertificateContext                         = modcrypt32.NewProc("CertCreateCertificateContext")
+	procCertDeleteCertificateFromStore                       = modcrypt32.NewProc("CertDeleteCertificateFromStore")
 	procCertEnumCertificatesInStore                          = modcrypt32.NewProc("CertEnumCertificatesInStore")
 	procCertFreeCertificateChain                             = modcrypt32.NewProc("CertFreeCertificateChain")
 	procCertFreeCertificateContext                           = modcrypt32.NewProc("CertFreeCertificateContext")
@@ -1125,6 +1126,14 @@ func CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, en
 	return
 }
 
+func CertDeleteCertificateFromStore(certContext *CertContext) (err error) {
+	r1, _, e1 := syscall.Syscall(procCertDeleteCertificateFromStore.Addr(), 1, uintptr(unsafe.Pointer(certContext)), 0, 0)
+	if r1 == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
 func CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) {
 	r0, _, e1 := syscall.Syscall(procCertEnumCertificatesInStore.Addr(), 2, uintptr(store), uintptr(unsafe.Pointer(prevContext)), 0)
 	context = (*CertContext)(unsafe.Pointer(r0))
@@ -2307,8 +2316,8 @@ func ResumeThread(thread Handle) (ret uint32, err error) {
 	return
 }
 
-func SetConsoleCursorPosition(console Handle, position Coord) (err error) {
+func setConsoleCursorPosition(console Handle, position uint32) (err error) {
-	r1, _, e1 := syscall.Syscall(procSetConsoleCursorPosition.Addr(), 2, uintptr(console), uintptr(*((*uint32)(unsafe.Pointer(&position)))), 0)
+	r1, _, e1 := syscall.Syscall(procSetConsoleCursorPosition.Addr(), 2, uintptr(console), uintptr(position), 0)
 	if r1 == 0 {
 		err = errnoErr(e1)
 	}

src/cmd/vendor/golang.org/x/tools/go/analysis/passes/asmdecl/asmdecl.go

@@ -308,7 +308,8 @@ Files:
 				continue
 			}
 
-			if strings.Contains(line, "RET") {
+			if strings.Contains(line, "RET") && !strings.Contains(line, "(SB)") {
+				// RET f(SB) is a tail call. It is okay to not write the results.
 				retLine = append(retLine, lineno)
 			}
 

src/cmd/vendor/golang.org/x/tools/go/analysis/passes/unsafeptr/unsafeptr.go

@@ -13,6 +13,7 @@ import (
 
 	"golang.org/x/tools/go/analysis"
 	"golang.org/x/tools/go/analysis/passes/inspect"
+	"golang.org/x/tools/go/analysis/passes/internal/analysisutil"
 	"golang.org/x/tools/go/ast/inspector"
 )
 
@@ -36,32 +37,44 @@ func run(pass *analysis.Pass) (interface{}, error) {
 
 	nodeFilter := []ast.Node{
 		(*ast.CallExpr)(nil),
+		(*ast.StarExpr)(nil),
+		(*ast.UnaryExpr)(nil),
 	}
 	inspect.Preorder(nodeFilter, func(n ast.Node) {
-		x := n.(*ast.CallExpr)
+		switch x := n.(type) {
-		if len(x.Args) != 1 {
+		case *ast.CallExpr:
-			return
+			if len(x.Args) == 1 &&
-		}
+				hasBasicType(pass.TypesInfo, x.Fun, types.UnsafePointer) &&
-		if hasBasicType(pass.TypesInfo, x.Fun, types.UnsafePointer) &&
+				hasBasicType(pass.TypesInfo, x.Args[0], types.Uintptr) &&
-			hasBasicType(pass.TypesInfo, x.Args[0], types.Uintptr) &&
+				!isSafeUintptr(pass.TypesInfo, x.Args[0]) {
-			!isSafeUintptr(pass.TypesInfo, x.Args[0]) {
+				pass.ReportRangef(x, "possible misuse of unsafe.Pointer")
-			pass.ReportRangef(x, "possible misuse of unsafe.Pointer")
+			}
+		case *ast.StarExpr:
+			if t := pass.TypesInfo.Types[x].Type; isReflectHeader(t) {
+				pass.ReportRangef(x, "possible misuse of %s", t)
+			}
+		case *ast.UnaryExpr:
+			if x.Op != token.AND {
+				return
+			}
+			if t := pass.TypesInfo.Types[x.X].Type; isReflectHeader(t) {
+				pass.ReportRangef(x, "possible misuse of %s", t)
+			}
 		}
 	})
 	return nil, nil
 }
 
 // isSafeUintptr reports whether x - already known to be a uintptr -
-// is safe to convert to unsafe.Pointer. It is safe if x is itself derived
+// is safe to convert to unsafe.Pointer.
-// directly from an unsafe.Pointer via conversion and pointer arithmetic
-// or if x is the result of reflect.Value.Pointer or reflect.Value.UnsafeAddr
-// or obtained from the Data field of a *reflect.SliceHeader or *reflect.StringHeader.
 func isSafeUintptr(info *types.Info, x ast.Expr) bool {
-	switch x := x.(type) {
+	// Check unsafe.Pointer safety rules according to
-	case *ast.ParenExpr:
+	// https://golang.org/pkg/unsafe/#Pointer.
-		return isSafeUintptr(info, x.X)
 
+	switch x := analysisutil.Unparen(x).(type) {
 	case *ast.SelectorExpr:
+		// "(6) Conversion of a reflect.SliceHeader or
+		// reflect.StringHeader Data field to or from Pointer."
 		if x.Sel.Name != "Data" {
 			break
 		}
@@ -78,44 +91,56 @@ func isSafeUintptr(info *types.Info, x ast.Expr) bool {
 		// For now approximate by saying that *Header is okay
 		// but Header is not.
 		pt, ok := info.Types[x.X].Type.(*types.Pointer)
-		if ok {
+		if ok && isReflectHeader(pt.Elem()) {
-			t, ok := pt.Elem().(*types.Named)
+			return true
-			if ok && t.Obj().Pkg().Path() == "reflect" {
-				switch t.Obj().Name() {
-				case "StringHeader", "SliceHeader":
-					return true
-				}
-			}
 		}
 
 	case *ast.CallExpr:
-		switch len(x.Args) {
+		// "(5) Conversion of the result of reflect.Value.Pointer or
-		case 0:
+		// reflect.Value.UnsafeAddr from uintptr to Pointer."
-			// maybe call to reflect.Value.Pointer or reflect.Value.UnsafeAddr.
+		if len(x.Args) != 0 {
-			sel, ok := x.Fun.(*ast.SelectorExpr)
+			break
-			if !ok {
-				break
-			}
-			switch sel.Sel.Name {
-			case "Pointer", "UnsafeAddr":
-				t, ok := info.Types[sel.X].Type.(*types.Named)
-				if ok && t.Obj().Pkg().Path() == "reflect" && t.Obj().Name() == "Value" {
-					return true
-				}
-			}
-
-		case 1:
-			// maybe conversion of uintptr to unsafe.Pointer
-			return hasBasicType(info, x.Fun, types.Uintptr) &&
-				hasBasicType(info, x.Args[0], types.UnsafePointer)
 		}
-
+		sel, ok := x.Fun.(*ast.SelectorExpr)
-	case *ast.BinaryExpr:
+		if !ok {
-		switch x.Op {
+			break
-		case token.ADD, token.SUB, token.AND_NOT:
+		}
-			return isSafeUintptr(info, x.X) && !isSafeUintptr(info, x.Y)
+		switch sel.Sel.Name {
+		case "Pointer", "UnsafeAddr":
+			t, ok := info.Types[sel.X].Type.(*types.Named)
+			if ok && t.Obj().Pkg().Path() == "reflect" && t.Obj().Name() == "Value" {
+				return true
+			}
 		}
 	}
+
+	// "(3) Conversion of a Pointer to a uintptr and back, with arithmetic."
+	return isSafeArith(info, x)
+}
+
+// isSafeArith reports whether x is a pointer arithmetic expression that is safe
+// to convert to unsafe.Pointer.
+func isSafeArith(info *types.Info, x ast.Expr) bool {
+	switch x := analysisutil.Unparen(x).(type) {
+	case *ast.CallExpr:
+		// Base case: initial conversion from unsafe.Pointer to uintptr.
+		return len(x.Args) == 1 &&
+			hasBasicType(info, x.Fun, types.Uintptr) &&
+			hasBasicType(info, x.Args[0], types.UnsafePointer)
+
+	case *ast.BinaryExpr:
+		// "It is valid both to add and to subtract offsets from a
+		// pointer in this way. It is also valid to use &^ to round
+		// pointers, usually for alignment."
+		switch x.Op {
+		case token.ADD, token.SUB, token.AND_NOT:
+			// TODO(mdempsky): Match compiler
+			// semantics. ADD allows a pointer on either
+			// side; SUB and AND_NOT don't care about RHS.
+			return isSafeArith(info, x.X) && !isSafeArith(info, x.Y)
+		}
+	}
+
 	return false
 }
 
@@ -128,3 +153,16 @@ func hasBasicType(info *types.Info, x ast.Expr, kind types.BasicKind) bool {
 	b, ok := t.(*types.Basic)
 	return ok && b.Kind() == kind
 }
+
+// isReflectHeader reports whether t is reflect.SliceHeader or reflect.StringHeader.
+func isReflectHeader(t types.Type) bool {
+	if named, ok := t.(*types.Named); ok {
+		if obj := named.Obj(); obj.Pkg() != nil && obj.Pkg().Path() == "reflect" {
+			switch obj.Name() {
+			case "SliceHeader", "StringHeader":
+				return true
+			}
+		}
+	}
+	return false
+}

src/cmd/vendor/modules.txt

@@ -24,7 +24,7 @@ golang.org/x/arch/arm/armasm
 golang.org/x/arch/arm64/arm64asm
 golang.org/x/arch/ppc64/ppc64asm
 golang.org/x/arch/x86/x86asm
-# golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
+# golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897
 ## explicit
 golang.org/x/crypto/ed25519
 golang.org/x/crypto/ed25519/internal/edwards25519
@@ -40,12 +40,12 @@ golang.org/x/mod/sumdb/dirhash
 golang.org/x/mod/sumdb/note
 golang.org/x/mod/sumdb/tlog
 golang.org/x/mod/zip
-# golang.org/x/sys v0.0.0-20201101102859-da207088b7d1
+# golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65
 ## explicit
 golang.org/x/sys/internal/unsafeheader
 golang.org/x/sys/unix
 golang.org/x/sys/windows
-# golang.org/x/tools v0.0.0-20201014170642-d1624618ad65
+# golang.org/x/tools v0.0.0-20201110201400-7099162a900a
 ## explicit
 golang.org/x/tools/go/analysis
 golang.org/x/tools/go/analysis/internal/analysisflags

src/go.mod

@@ -3,8 +3,8 @@ module std
 go 1.16
 
 require (
-	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
+	golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897
-	golang.org/x/net v0.0.0-20200927032502-5d4f70055728
+	golang.org/x/net v0.0.0-20201029221708-28c70e62bb1d
-	golang.org/x/sys v0.0.0-20201101102859-da207088b7d1 // indirect
+	golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65 // indirect
-	golang.org/x/text v0.3.4-0.20200826142016-a8b467125457 // indirect
+	golang.org/x/text v0.3.4 // indirect
 )

src/go.sum

@@ -1,16 +1,17 @@
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
+golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897 h1:pLI5jrR7OSLijeIDcmRxNmw2api+jEfxLoykJVice/E=
-golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20200927032502-5d4f70055728 h1:5wtQIAulKU5AbLQOkjxl32UufnIOqgBX72pS0AV14H0=
+golang.org/x/net v0.0.0-20201029221708-28c70e62bb1d h1:dOiJ2n2cMwGLce/74I/QHMbnpk5GfY7InR8rczoMqRM=
-golang.org/x/net v0.0.0-20200927032502-5d4f70055728/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20201029221708-28c70e62bb1d/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201101102859-da207088b7d1 h1:a/mKvvZr9Jcc8oKfcmgzyp7OwF73JPWsQLvH1z2Kxck=
+golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65 h1:Qo9oJ566/Sq7N4hrGftVXs8GI2CXBCuOd4S2wHE/e0M=
-golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.4-0.20200826142016-a8b467125457 h1:K2Vq+FTHFbV5auJiAahir8LO9HUqufuVbQYSNzZopos=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.4-0.20200826142016-a8b467125457/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.4 h1:0YWbFKbhXG/wIiuHDSKpS0Iy7FSA+u45VtBMfQcFTTc=
+golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

src/net/http/export_test.go

@@ -254,7 +254,7 @@ func hookSetter(dst *func()) func(func()) {
 }
 
 func ExportHttp2ConfigureTransport(t *Transport) error {
-	t2, err := http2configureTransport(t)
+	t2, err := http2configureTransports(t)
 	if err != nil {
 		return err
 	}

src/net/http/h2_bundle.go

@@ -6656,12 +6656,21 @@ func (t *http2Transport) pingTimeout() time.Duration {
 
 // ConfigureTransport configures a net/http HTTP/1 Transport to use HTTP/2.
 // It returns an error if t1 has already been HTTP/2-enabled.
+//
+// Use ConfigureTransports instead to configure the HTTP/2 Transport.
 func http2ConfigureTransport(t1 *Transport) error {
-	_, err := http2configureTransport(t1)
+	_, err := http2ConfigureTransports(t1)
 	return err
 }
 
-func http2configureTransport(t1 *Transport) (*http2Transport, error) {
+// ConfigureTransports configures a net/http HTTP/1 Transport to use HTTP/2.
+// It returns a new HTTP/2 Transport for further configuration.
+// It returns an error if t1 has already been HTTP/2-enabled.
+func http2ConfigureTransports(t1 *Transport) (*http2Transport, error) {
+	return http2configureTransports(t1)
+}
+
+func http2configureTransports(t1 *Transport) (*http2Transport, error) {
 	connPool := new(http2clientConnPool)
 	t2 := &http2Transport{
 		ConnPool: http2noDialClientConnPool{connPool},
@@ -7192,6 +7201,7 @@ func (t *http2Transport) newClientConn(c net.Conn, singleUse bool) (*http2Client
 	cc.inflow.add(http2transportDefaultConnFlow + http2initialWindowSize)
 	cc.bw.Flush()
 	if cc.werr != nil {
+		cc.Close()
 		return nil, cc.werr
 	}
 
@@ -7583,6 +7593,15 @@ func (cc *http2ClientConn) roundTrip(req *Request) (res *Response, gotErrAfterRe
 	bodyWriter := cc.t.getBodyWriterState(cs, body)
 	cs.on100 = bodyWriter.on100
 
+	defer func() {
+		cc.wmu.Lock()
+		werr := cc.werr
+		cc.wmu.Unlock()
+		if werr != nil {
+			cc.Close()
+		}
+	}()
+
 	cc.wmu.Lock()
 	endStream := !hasBody && !hasTrailers
 	werr := cc.writeHeaders(cs.ID, endStream, int(cc.maxFrameSize), hdrs)

src/net/http/omithttp2.go

@@ -45,7 +45,7 @@ type http2clientConnPool struct {
 	conns map[string][]struct{}
 }
 
-func http2configureTransport(*Transport) (*http2Transport, error) { panic(noHTTP2) }
+func http2configureTransports(*Transport) (*http2Transport, error) { panic(noHTTP2) }
 
 func http2isNoCachedConnError(err error) bool {
 	_, ok := err.(interface{ IsHTTP2NoCachedConnError() })

src/net/http/transport.go

@@ -395,7 +395,7 @@ func (t *Transport) onceSetNextProtoDefaults() {
 	if omitBundledHTTP2 {
 		return
 	}
-	t2, err := http2configureTransport(t)
+	t2, err := http2configureTransports(t)
 	if err != nil {
 		log.Printf("Error enabling Transport HTTP/2 support: %v", err)
 		return
@@ -1727,7 +1727,7 @@ func (t *Transport) dialConn(ctx context.Context, cm connectMethod) (pconn *pers
 		if next, ok := t.TLSNextProto[s.NegotiatedProtocol]; ok {
 			alt := next(cm.targetAddr, pconn.conn.(*tls.Conn))
 			if e, ok := alt.(erringRoundTripper); ok {
-				// pconn.conn was closed by next (http2configureTransport.upgradeFn).
+				// pconn.conn was closed by next (http2configureTransports.upgradeFn).
 				return nil, e.RoundTripErr()
 			}
 			return &persistConn{t: t, cacheKey: pconn.cacheKey, alt: alt}, nil

src/vendor/golang.org/x/net/http/httpproxy/proxy.go

@@ -27,8 +27,7 @@ import (
 type Config struct {
 	// HTTPProxy represents the value of the HTTP_PROXY or
 	// http_proxy environment variable. It will be used as the proxy
-	// URL for HTTP requests and HTTPS requests unless overridden by
+	// URL for HTTP requests unless overridden by NoProxy.
-	// HTTPSProxy or NoProxy.
 	HTTPProxy string
 
 	// HTTPSProxy represents the HTTPS_PROXY or https_proxy
@@ -129,8 +128,7 @@ func (cfg *config) proxyForURL(reqURL *url.URL) (*url.URL, error) {
 	var proxy *url.URL
 	if reqURL.Scheme == "https" {
 		proxy = cfg.httpsProxy
-	}
+	} else if reqURL.Scheme == "http" {
-	if proxy == nil {
 		proxy = cfg.httpProxy
 		if proxy != nil && cfg.CGI {
 			return nil, errors.New("refusing to use HTTP_PROXY value in CGI environment; see golang.org/s/cgihttpproxy")

src/vendor/golang.org/x/net/idna/tables12.0.0.go

@@ -1,6 +1,6 @@
 // Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
 
-// +build go1.14
+// +build go1.14,!go1.16
 
 package idna
 

src/vendor/golang.org/x/net/nettest/nettest.go

@@ -126,7 +126,7 @@ func TestableNetwork(network string) bool {
 		}
 	case "unixpacket":
 		switch runtime.GOOS {
-		case "aix", "android", "fuchsia", "hurd", "darwin", "ios", "js", "nacl", "plan9", "windows":
+		case "aix", "android", "fuchsia", "hurd", "darwin", "ios", "js", "nacl", "plan9", "windows", "zos":
 			return false
 		case "netbsd":
 			// It passes on amd64 at least. 386 fails

src/vendor/golang.org/x/net/nettest/nettest_stub.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows,!zos
 
 package nettest
 

src/vendor/golang.org/x/net/nettest/nettest_unix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
 
 package nettest
 

src/vendor/modules.txt

@@ -1,4 +1,4 @@
-# golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
+# golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897
 ## explicit
 golang.org/x/crypto/chacha20
 golang.org/x/crypto/chacha20poly1305
@@ -8,7 +8,7 @@ golang.org/x/crypto/curve25519
 golang.org/x/crypto/hkdf
 golang.org/x/crypto/internal/subtle
 golang.org/x/crypto/poly1305
-# golang.org/x/net v0.0.0-20200927032502-5d4f70055728
+# golang.org/x/net v0.0.0-20201029221708-28c70e62bb1d
 ## explicit
 golang.org/x/net/dns/dnsmessage
 golang.org/x/net/http/httpguts
@@ -18,10 +18,10 @@ golang.org/x/net/idna
 golang.org/x/net/lif
 golang.org/x/net/nettest
 golang.org/x/net/route
-# golang.org/x/sys v0.0.0-20201101102859-da207088b7d1
+# golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65
 ## explicit
 golang.org/x/sys/cpu
-# golang.org/x/text v0.3.4-0.20200826142016-a8b467125457
+# golang.org/x/text v0.3.4
 ## explicit
 golang.org/x/text/secure/bidirule
 golang.org/x/text/transform