Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 115 insertions, 0 deletions

diff --git a/src/internal/godebugs/godebugs_test.go b/src/internal/godebugs/godebugs_test.go
new file mode 100644
index 0000000..a1cb8d4
--- /dev/null
+++ b/src/internal/godebugs/godebugs_test.go
@@ -0,0 +1,46 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package godebugs_test
+
+import (
+	"internal/godebugs"
+	"internal/testenv"
+	"os"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+func TestAll(t *testing.T) {
+	data, err := os.ReadFile("../../../doc/godebug.md")
+	if err != nil {
+		if os.IsNotExist(err) && (testenv.Builder() == "" || runtime.GOOS != "linux") {
+			t.Skip(err)
+		}
+		t.Fatal(err)
+	}
+	doc := string(data)
+
+	last := ""
+	for _, info := range godebugs.All {
+		if info.Name <= last {
+			t.Errorf("All not sorted: %s then %s", last, info.Name)
+		}
+		last = info.Name
+
+		if info.Package == "" {
+			t.Errorf("Name=%s missing Package", info.Name)
+		}
+		if info.Changed != 0 && info.Old == "" {
+			t.Errorf("Name=%s has Changed, missing Old", info.Name)
+		}
+		if info.Old != "" && info.Changed == 0 {
+			t.Errorf("Name=%s has Old, missing Changed", info.Name)
+		}
+		if !strings.Contains(doc, "`"+info.Name+"`") {
+			t.Errorf("Name=%s not documented in doc/godebug.md", info.Name)
+		}
+	}
+}
diff --git a/src/internal/godebugs/table.go b/src/internal/godebugs/table.go
new file mode 100644
index 0000000..b1711d9
--- /dev/null
+++ b/src/internal/godebugs/table.go
@@ -0,0 +1,69 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package godebugs provides a table of known GODEBUG settings,
+// for use by a variety of other packages, including internal/godebug,
+// runtime, runtime/metrics, and cmd/go/internal/load.
+package godebugs
+
+// An Info describes a single known GODEBUG setting.
+type Info struct {
+	Name    string // name of the setting ("panicnil")
+	Package string // package that uses the setting ("runtime")
+	Changed int    // minor version when default changed, if any; 21 means Go 1.21
+	Old     string // value that restores behavior prior to Changed
+	Opaque  bool   // setting does not export information to runtime/metrics using [internal/godebug.Setting.IncNonDefault]
+}
+
+// All is the table of known settings, sorted by Name.
+//
+// Note: After adding entries to this table, run 'go generate runtime/metrics'
+// to update the runtime/metrics doc comment.
+// (Otherwise the runtime/metrics test will fail.)
+//
+// Note: After adding entries to this table, update the list in doc/godebug.md as well.
+// (Otherwise the test in this package will fail.)
+var All = []Info{
+	{Name: "execerrdot", Package: "os/exec"},
+	{Name: "gocachehash", Package: "cmd/go"},
+	{Name: "gocachetest", Package: "cmd/go"},
+	{Name: "gocacheverify", Package: "cmd/go"},
+	{Name: "http2client", Package: "net/http"},
+	{Name: "http2debug", Package: "net/http", Opaque: true},
+	{Name: "http2server", Package: "net/http"},
+	{Name: "installgoroot", Package: "go/build"},
+	{Name: "jstmpllitinterp", Package: "html/template"},
+	//{Name: "multipartfiles", Package: "mime/multipart"},
+	{Name: "multipartmaxheaders", Package: "mime/multipart"},
+	{Name: "multipartmaxparts", Package: "mime/multipart"},
+	{Name: "multipathtcp", Package: "net"},
+	{Name: "netdns", Package: "net", Opaque: true},
+	{Name: "panicnil", Package: "runtime", Changed: 21, Old: "1"},
+	{Name: "randautoseed", Package: "math/rand"},
+	{Name: "tarinsecurepath", Package: "archive/tar"},
+	{Name: "tlsmaxrsasize", Package: "crypto/tls"},
+	{Name: "x509sha1", Package: "crypto/x509"},
+	{Name: "x509usefallbackroots", Package: "crypto/x509"},
+	{Name: "zipinsecurepath", Package: "archive/zip"},
+}
+
+// Lookup returns the Info with the given name.
+func Lookup(name string) *Info {
+	// binary search, avoiding import of sort.
+	lo := 0
+	hi := len(All)
+	for lo < hi {
+		m := lo + (hi-lo)>>1
+		mid := All[m].Name
+		if name == mid {
+			return &All[m]
+		}
+		if name < mid {
+			hi = m
+		} else {
+			lo = m + 1
+		}
+	}
+	return nil
+}