Add patch 7 & 8

.github/workflows/go-build.yml

@@ -73,6 +73,7 @@ jobs:
           rm -rf src/*.rc
           rm -rf src/make.*
           rm -rf src/run.*
+          rm -rf *.md
 
           # Process binaries
           cd bin

README.md

@@ -10,6 +10,8 @@ _Gopher image by [Renee French][rf], licensed under [Creative Commons 4.0 Attrib
 1. **Windows 7 and Windows Server 2008 R2 Support**  
    While the official Go project has dropped support for Windows 7 and Windows Server 2008 R2, this fork maintains compatibility with these legacy Windows systems.
 
+   Tested on Windows 7 RTM (build 7600) — no updates required — through Windows 11 24H2
+
 2. **Classic `go get` Behaviour**  
    This fork allows for the deprecated `go get` behaviour when `GO111MODULE` is set to "off" or "auto". This means:
 
@@ -29,6 +31,7 @@ Every release includes the following modifications:
 - Added back Windows 7 console handle workaround (reverted [48042aa](https://github.com/golang/go/commit/48042aa09c2f878c4faa576948b07fe625c4707a))
 - Added back 5ms sleep on Windows 7/8 in (\*Process).Wait (reverted [f0894a0](https://github.com/golang/go/commit/f0894a00f4b756d4b9b4078af2e686b359493583))
 - Restored deprecated `go get` behavior for use outside modules (reverted [de4d503](https://github.com/golang/go/commit/de4d50316fb5c6d1529aa5377dc93b26021ee843))
+- Reverted to the previous `removeall_noat` variant for Windows (fixed [issue #2](https://github.com/thongtech/go-legacy-win7/issues/2))
 - Includes all improvements and bug fixes from the corresponding upstream Go release
 
 The Windows binary provided here also supports Windows 7 and Windows Server 2008 R2
@@ -37,7 +40,20 @@ The Windows binary provided here also supports Windows 7 and Windows Server 2008
 
 ### Binary Distributions
 
-Binary distributions are **available at the [release page](https://github.com/thongtech/go-legacy-win7/releases)**.
+| OS | Architecture | Filename | SHA‑256 Hash |
+|----|--------------|----------|--------------|
+| **macOS** | Intel (amd64) | [go-legacy-win7-1.25.1-1.darwin_amd64.tar.gz](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.darwin_amd64.tar.gz) | `4bd9d9a3079c1b4d81b22d999697903fa9ac95eb18dee9376a88e6fa82474943` |
+| macOS | Apple (ARM64) | [go-legacy-win7-1.25.1-1.darwin_arm64.tar.gz](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.darwin_arm64.tar.gz) | `d269eb12273f6a94df965a4bcd46b67aafe45467701b6e1ddf0df31d687b55bb` |
+| **Linux** | x86 (386) | [go-legacy-win7-1.25.1-1.linux_386.tar.gz](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.linux_386.tar.gz) | `de0d649fff56dd0fcdd335c5a126ad5847cf0a227724cff44f86cb78d14ddc43` |
+| Linux | x64 (amd64) | [go-legacy-win7-1.25.1-1.linux_amd64.tar.gz](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.linux_amd64.tar.gz) | `452aafba7800600da66dfeb36d3cf291f9c01381fdc6e24441aba7697c49d33a` |
+| Linux | ARM (32‑bit) | [go-legacy-win7-1.25.1-1.linux_arm.tar.gz](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.linux_arm.tar.gz) | `eb80a1f41bd3e21c0f857500b2d30afcd17311f902ea3c04c13e345664a54ff6` |
+| Linux | ARM64 | [go-legacy-win7-1.25.1-1.linux_arm64.tar.gz](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.linux_arm64.tar.gz) | `a05468e7b90fbeee70610dc4c1a439d7929a0ec06765d5cb0454cd900e4f90cb` |
+| **Windows** | x86 (386) | [go-legacy-win7-1.25.1-1.windows_386.zip](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.windows_386.zip) | `c7c90918f8506e2fd28270a38a03e5200635e2183e4365090e7b00aca5a320be` |
+| Windows | x64 (amd64) | [go-legacy-win7-1.25.1-1.windows_amd64.zip](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.windows_amd64.zip) | `aa6c2a22bb7c8e4ac632e3656ce6eb3461de7ea0645064496f161bc4edc47555` |
+| Windows | ARM64 | [go-legacy-win7-1.25.1-1.windows_arm64.zip](https://github.com/thongtech/go-legacy-win7/releases/download/v1.25.1-1/go-legacy-win7-1.25.1-1.windows_arm64.zip) | `fe498473f8f6cc7ad7f5d41a46acebc8f6ac1be7edaeb75f356eb604061b4276` |
+
+### Before you begin
+To avoid PATH/GOROOT conflicts and mixed toolchains, uninstall any existing Go installation first.
 
 #### Windows Installation
 

VERSION

@@ -1,2 +1,2 @@
-go1.25.0
-time 2025-08-08T19:33:32Z
+go1.25.1
+time 2025-08-27T15:49:40Z

patches/0006-Use-removeall_noat-variant-on-Windows.patch

@@ -0,0 +1,130 @@
+From c0f79a96a0262b2dd69d1a85e20b481d03cba8f2 Mon Sep 17 00:00:00 2001
+From: Vorapol Rinsatitnon <vorapol.r@pm.me>
+Date: Tue, 26 Aug 2025 15:07:25 +0700
+Subject: [PATCH] Use removeall_noat variant on Windows
+
+---
+ src/os/removeall_at.go   |  2 +-
+ src/os/removeall_noat.go |  2 +-
+ src/os/root.go           |  6 ------
+ src/os/root_noopenat.go  | 20 --------------------
+ src/os/root_openat.go    | 22 ----------------------
+ 5 files changed, 2 insertions(+), 50 deletions(-)
+
+diff --git a/src/os/removeall_at.go b/src/os/removeall_at.go
+index 5ddc1ade..61298a46 100644
+--- a/src/os/removeall_at.go
++++ b/src/os/removeall_at.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.
+ 
+-//go:build unix || wasip1 || windows
++//go:build unix || wasip1
+ 
+ package os
+ 
+diff --git a/src/os/removeall_noat.go b/src/os/removeall_noat.go
+index 395a1503..02f6fca7 100644
+--- a/src/os/removeall_noat.go
++++ b/src/os/removeall_noat.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.
+ 
+-//go:build (js && wasm) || plan9
++//go:build (js && wasm) || plan9 || windows
+ 
+ package os
+ 
+diff --git a/src/os/root.go b/src/os/root.go
+index d759727c..1ecbcc09 100644
+--- a/src/os/root.go
++++ b/src/os/root.go
+@@ -189,12 +189,6 @@ func (r *Root) Remove(name string) error {
+ 	return rootRemove(r, name)
+ }
+ 
+-// RemoveAll removes the named file or directory and any children that it contains.
+-// See [RemoveAll] for more details.
+-func (r *Root) RemoveAll(name string) error {
+-	return rootRemoveAll(r, name)
+-}
+-
+ // Stat returns a [FileInfo] describing the named file in the root.
+ // See [Stat] for more details.
+ func (r *Root) Stat(name string) (FileInfo, error) {
+diff --git a/src/os/root_noopenat.go b/src/os/root_noopenat.go
+index 59f1abe9..ecdf264f 100644
+--- a/src/os/root_noopenat.go
++++ b/src/os/root_noopenat.go
+@@ -11,7 +11,6 @@ import (
+ 	"internal/filepathlite"
+ 	"internal/stringslite"
+ 	"sync/atomic"
+-	"syscall"
+ 	"time"
+ )
+ 
+@@ -186,25 +185,6 @@ func rootRemove(r *Root, name string) error {
+ 	return nil
+ }
+ 
+-func rootRemoveAll(r *Root, name string) error {
+-	if endsWithDot(name) {
+-		// Consistency with os.RemoveAll: Return EINVAL when trying to remove .
+-		return &PathError{Op: "RemoveAll", Path: name, Err: syscall.EINVAL}
+-	}
+-	if err := checkPathEscapesLstat(r, name); err != nil {
+-		if err == syscall.ENOTDIR {
+-			// Some intermediate path component is not a directory.
+-			// RemoveAll treats this as success (since the target doesn't exist).
+-			return nil
+-		}
+-		return &PathError{Op: "RemoveAll", Path: name, Err: err}
+-	}
+-	if err := RemoveAll(joinPath(r.root.name, name)); err != nil {
+-		return &PathError{Op: "RemoveAll", Path: name, Err: underlyingError(err)}
+-	}
+-	return nil
+-}
+-
+ func rootReadlink(r *Root, name string) (string, error) {
+ 	if err := checkPathEscapesLstat(r, name); err != nil {
+ 		return "", &PathError{Op: "readlinkat", Path: name, Err: err}
+diff --git a/src/os/root_openat.go b/src/os/root_openat.go
+index e433bd50..cfc6d906 100644
+--- a/src/os/root_openat.go
++++ b/src/os/root_openat.go
+@@ -194,28 +194,6 @@ func rootRemove(r *Root, name string) error {
+ 	return nil
+ }
+ 
+-func rootRemoveAll(r *Root, name string) error {
+-	// Consistency with os.RemoveAll: Strip trailing /s from the name,
+-	// so RemoveAll("not_a_directory/") succeeds.
+-	for len(name) > 0 && IsPathSeparator(name[len(name)-1]) {
+-		name = name[:len(name)-1]
+-	}
+-	if endsWithDot(name) {
+-		// Consistency with os.RemoveAll: Return EINVAL when trying to remove .
+-		return &PathError{Op: "RemoveAll", Path: name, Err: syscall.EINVAL}
+-	}
+-	_, err := doInRoot(r, name, nil, func(parent sysfdType, name string) (struct{}, error) {
+-		return struct{}{}, removeAllFrom(parent, name)
+-	})
+-	if IsNotExist(err) {
+-		return nil
+-	}
+-	if err != nil {
+-		return &PathError{Op: "RemoveAll", Path: name, Err: underlyingError(err)}
+-	}
+-	return err
+-}
+-
+ func rootRename(r *Root, oldname, newname string) error {
+ 	_, err := doInRoot(r, oldname, nil, func(oldparent sysfdType, oldname string) (struct{}, error) {
+ 		_, err := doInRoot(r, newname, nil, func(newparent sysfdType, newname string) (struct{}, error) {
+-- 
+2.50.1.windows.1
+

patches/0008-Replace-atomic-Or-with-compare-and-swap-loop.patch

@@ -0,0 +1,40 @@
+From c63f37858041ffd2bcf751f57632c90d630eddc2 Mon Sep 17 00:00:00 2001
+From: Vorapol Rinsatitnon <vorapol.r@pm.me>
+Date: Thu, 18 Sep 2025 12:01:09 +0800
+Subject: [PATCH] Replace atomic Or with compare-and-swap loop
+
+---
+ src/sync/waitgroup.go | 17 +++++++++++++----
+ 1 file changed, 13 insertions(+), 4 deletions(-)
+
+diff --git a/src/sync/waitgroup.go b/src/sync/waitgroup.go
+index 5b035aa3..8aeae7bf 100644
+--- a/src/sync/waitgroup.go
++++ b/src/sync/waitgroup.go
+@@ -94,10 +94,19 @@ func (wg *WaitGroup) Add(delta int) {
+ 			fatal("sync: WaitGroup.Add called from multiple synctest bubbles")
+ 		case synctest.CurrentBubble:
+ 			bubbled = true
+-			state := wg.state.Or(waitGroupBubbleFlag)
+-			if state != 0 && state&waitGroupBubbleFlag == 0 {
+-				// Add has been called from outside this bubble.
+-				fatal("sync: WaitGroup.Add called from inside and outside synctest bubble")
++			// Use compare-and-swap loop to implement atomic Or operation
++			// since race detector doesn't have __tsan_go_atomic64_fetch_or
++			for {
++				old := wg.state.Load()
++				new := old | waitGroupBubbleFlag
++				if wg.state.CompareAndSwap(old, new) {
++					state := old
++					if state != 0 && state&waitGroupBubbleFlag == 0 {
++						// Add has been called from outside this bubble.
++						fatal("sync: WaitGroup.Add called from inside and outside synctest bubble")
++					}
++					break
++				}
+ 			}
+ 		}
+ 	}
+-- 
+2.47.2
+

src/cmd/go/internal/gover/mod.go

@@ -109,6 +109,9 @@ func ModIsPrefix(path, vers string) bool {
 // The caller is assumed to have checked that ModIsValid(path, vers) is true.
 func ModIsPrerelease(path, vers string) bool {
 	if IsToolchain(path) {
+		if path == "toolchain" {
+			return IsPrerelease(FromToolchain(vers))
+		}
 		return IsPrerelease(vers)
 	}
 	return semver.Prerelease(vers) != ""

src/cmd/go/testdata/script/mod_get_toolchain.txt

@@ -94,12 +94,14 @@ stderr '^go: added toolchain go1.24rc1$'
 grep 'go 1.22.9' go.mod  # no longer implied
 grep 'toolchain go1.24rc1' go.mod
 
-# go get toolchain@latest finds go1.999testmod.
+# go get toolchain@latest finds go1.23.9.
 cp go.mod.orig go.mod
 go get toolchain@latest
-stderr '^go: added toolchain go1.999testmod$'
+stderr '^go: added toolchain go1.23.9$'
 grep 'go 1.21' go.mod
-grep 'toolchain go1.999testmod' go.mod
+grep 'toolchain go1.23.9' go.mod
+
+
 
 # Bug fixes.
 
@@ -115,7 +117,7 @@ stderr '^go: upgraded go 1.19 => 1.21.0'
 
 # go get toolchain@1.24rc1 is OK too.
 go get toolchain@1.24rc1
-stderr '^go: downgraded toolchain go1.999testmod => go1.24rc1$'
+stderr '^go: upgraded toolchain go1.23.9 => go1.24rc1$'
 
 # go get go@1.21 should work if we are the Go 1.21 language version,
 # even though there's no toolchain for it.

src/internal/poll/fd_windows.go

@@ -1106,6 +1106,12 @@ func (fd *FD) Seek(offset int64, whence int) (int64, error) {
 	fd.l.Lock()
 	defer fd.l.Unlock()
 
+	if !fd.isBlocking && whence == io.SeekCurrent {
+		// Windows doesn't keep the file pointer for overlapped file handles.
+		// We do it ourselves in case to account for any read or write
+		// operations that may have occurred.
+		offset += fd.offset
+	}
 	n, err := syscall.Seek(fd.Sysfd, offset, whence)
 	fd.setOffset(n)
 	return n, err

src/internal/synctest/synctest_test.go

@@ -383,57 +383,59 @@ func TestChannelMovedOutOfBubble(t *testing.T) {
 	for _, test := range []struct {
 		desc      string
 		f         func(chan struct{})
-		wantPanic string
+		wantFatal string
 	}{{
 		desc: "receive",
 		f: func(ch chan struct{}) {
 			<-ch
 		},
-		wantPanic: "receive on synctest channel from outside bubble",
+		wantFatal: "receive on synctest channel from outside bubble",
 	}, {
 		desc: "send",
 		f: func(ch chan struct{}) {
 			ch <- struct{}{}
 		},
-		wantPanic: "send on synctest channel from outside bubble",
+		wantFatal: "send on synctest channel from outside bubble",
 	}, {
 		desc: "close",
 		f: func(ch chan struct{}) {
 			close(ch)
 		},
-		wantPanic: "close of synctest channel from outside bubble",
+		wantFatal: "close of synctest channel from outside bubble",
 	}} {
 		t.Run(test.desc, func(t *testing.T) {
 			// Bubbled channel accessed from outside any bubble.
 			t.Run("outside_bubble", func(t *testing.T) {
-				donec := make(chan struct{})
-				ch := make(chan chan struct{})
-				go func() {
-					defer close(donec)
-					defer wantPanic(t, test.wantPanic)
-					test.f(<-ch)
-				}()
-				synctest.Run(func() {
-					ch <- make(chan struct{})
+				wantFatal(t, test.wantFatal, func() {
+					donec := make(chan struct{})
+					ch := make(chan chan struct{})
+					go func() {
+						defer close(donec)
+						test.f(<-ch)
+					}()
+					synctest.Run(func() {
+						ch <- make(chan struct{})
+					})
+					<-donec
 				})
-				<-donec
 			})
 			// Bubbled channel accessed from a different bubble.
 			t.Run("different_bubble", func(t *testing.T) {
-				donec := make(chan struct{})
-				ch := make(chan chan struct{})
-				go func() {
-					defer close(donec)
-					c := <-ch
+				wantFatal(t, test.wantFatal, func() {
+					donec := make(chan struct{})
+					ch := make(chan chan struct{})
+					go func() {
+						defer close(donec)
+						c := <-ch
+						synctest.Run(func() {
+							test.f(c)
+						})
+					}()
 					synctest.Run(func() {
-						defer wantPanic(t, test.wantPanic)
-						test.f(c)
+						ch <- make(chan struct{})
 					})
-				}()
-				synctest.Run(func() {
-					ch <- make(chan struct{})
+					<-donec
 				})
-				<-donec
 			})
 		})
 	}
@@ -443,39 +445,40 @@ func TestTimerFromInsideBubble(t *testing.T) {
 	for _, test := range []struct {
 		desc      string
 		f         func(tm *time.Timer)
-		wantPanic string
+		wantFatal string
 	}{{
 		desc: "read channel",
 		f: func(tm *time.Timer) {
 			<-tm.C
 		},
-		wantPanic: "receive on synctest channel from outside bubble",
+		wantFatal: "receive on synctest channel from outside bubble",
 	}, {
 		desc: "Reset",
 		f: func(tm *time.Timer) {
 			tm.Reset(1 * time.Second)
 		},
-		wantPanic: "reset of synctest timer from outside bubble",
+		wantFatal: "reset of synctest timer from outside bubble",
 	}, {
 		desc: "Stop",
 		f: func(tm *time.Timer) {
 			tm.Stop()
 		},
-		wantPanic: "stop of synctest timer from outside bubble",
+		wantFatal: "stop of synctest timer from outside bubble",
 	}} {
 		t.Run(test.desc, func(t *testing.T) {
-			donec := make(chan struct{})
-			ch := make(chan *time.Timer)
-			go func() {
-				defer close(donec)
-				defer wantPanic(t, test.wantPanic)
-				test.f(<-ch)
-			}()
-			synctest.Run(func() {
-				tm := time.NewTimer(1 * time.Second)
-				ch <- tm
+			wantFatal(t, test.wantFatal, func() {
+				donec := make(chan struct{})
+				ch := make(chan *time.Timer)
+				go func() {
+					defer close(donec)
+					test.f(<-ch)
+				}()
+				synctest.Run(func() {
+					tm := time.NewTimer(1 * time.Second)
+					ch <- tm
+				})
+				<-donec
 			})
-			<-donec
 		})
 	}
 }

src/net/http/csrf.go

@@ -77,13 +77,21 @@ func (c *CrossOriginProtection) AddTrustedOrigin(origin string) error {
 	return nil
 }
 
-var noopHandler = HandlerFunc(func(w ResponseWriter, r *Request) {})
+type noopHandler struct{}
+
+func (noopHandler) ServeHTTP(ResponseWriter, *Request) {}
+
+var sentinelHandler Handler = &noopHandler{}
 
 // AddInsecureBypassPattern permits all requests that match the given pattern.
-// The pattern syntax and precedence rules are the same as [ServeMux].
 //
-// AddInsecureBypassPattern can be called concurrently with other methods
-// or request handling, and applies to future requests.
+// The pattern syntax and precedence rules are the same as [ServeMux]. Only
+// requests that match the pattern directly are permitted. Those that ServeMux
+// would redirect to a pattern (e.g. after cleaning the path or adding a
+// trailing slash) are not.
+//
+// AddInsecureBypassPattern can be called concurrently with other methods or
+// request handling, and applies to future requests.
 func (c *CrossOriginProtection) AddInsecureBypassPattern(pattern string) {
 	var bypass *ServeMux
 
@@ -99,7 +107,7 @@ func (c *CrossOriginProtection) AddInsecureBypassPattern(pattern string) {
 		}
 	}
 
-	bypass.Handle(pattern, noopHandler)
+	bypass.Handle(pattern, sentinelHandler)
 }
 
 // SetDenyHandler sets a handler to invoke when a request is rejected.
@@ -172,7 +180,7 @@ var (
 // be deferred until the last moment.
 func (c *CrossOriginProtection) isRequestExempt(req *Request) bool {
 	if bypass := c.bypass.Load(); bypass != nil {
-		if _, pattern := bypass.Handler(req); pattern != "" {
+		if h, _ := bypass.Handler(req); h == sentinelHandler {
 			// The request matches a bypass pattern.
 			return true
 		}

src/net/http/csrf_test.go

@@ -113,6 +113,11 @@ func TestCrossOriginProtectionPatternBypass(t *testing.T) {
 	protection := http.NewCrossOriginProtection()
 	protection.AddInsecureBypassPattern("/bypass/")
 	protection.AddInsecureBypassPattern("/only/{foo}")
+	protection.AddInsecureBypassPattern("/no-trailing")
+	protection.AddInsecureBypassPattern("/yes-trailing/")
+	protection.AddInsecureBypassPattern("PUT /put-only/")
+	protection.AddInsecureBypassPattern("GET /get-only/")
+	protection.AddInsecureBypassPattern("POST /post-only/")
 	handler := protection.Handler(okHandler)
 
 	tests := []struct {
@@ -126,13 +131,23 @@ func TestCrossOriginProtectionPatternBypass(t *testing.T) {
 		{"non-bypass path without sec-fetch-site", "/api/", "", http.StatusForbidden},
 		{"non-bypass path with cross-site", "/api/", "cross-site", http.StatusForbidden},
 
-		{"redirect to bypass path without ..", "/foo/../bypass/bar", "", http.StatusOK},
-		{"redirect to bypass path with trailing slash", "/bypass", "", http.StatusOK},
+		{"redirect to bypass path without ..", "/foo/../bypass/bar", "", http.StatusForbidden},
+		{"redirect to bypass path with trailing slash", "/bypass", "", http.StatusForbidden},
 		{"redirect to non-bypass path with ..", "/foo/../api/bar", "", http.StatusForbidden},
 		{"redirect to non-bypass path with trailing slash", "/api", "", http.StatusForbidden},
 
 		{"wildcard bypass", "/only/123", "", http.StatusOK},
 		{"non-wildcard", "/only/123/foo", "", http.StatusForbidden},
+
+		// https://go.dev/issue/75054
+		{"no trailing slash exact match", "/no-trailing", "", http.StatusOK},
+		{"no trailing slash with slash", "/no-trailing/", "", http.StatusForbidden},
+		{"yes trailing slash exact match", "/yes-trailing/", "", http.StatusOK},
+		{"yes trailing slash without slash", "/yes-trailing", "", http.StatusForbidden},
+
+		{"method-specific hit", "/post-only/", "", http.StatusOK},
+		{"method-specific miss (PUT)", "/put-only/", "", http.StatusForbidden},
+		{"method-specific miss (GET)", "/get-only/", "", http.StatusForbidden},
 	}
 
 	for _, tc := range tests {

src/net/ipsock_posix.go

@@ -237,8 +237,12 @@ func ipToSockaddr(family int, ip IP, port int, zone string) (syscall.Sockaddr, e
 func addrPortToSockaddrInet4(ap netip.AddrPort) (syscall.SockaddrInet4, error) {
 	// ipToSockaddrInet4 has special handling here for zero length slices.
 	// We do not, because netip has no concept of a generic zero IP address.
+	//
+	// addr is allowed to be an IPv4-mapped IPv6 address.
+	// As4 will unmap it to an IPv4 address.
+	// The error message is kept consistent with ipToSockaddrInet4.
 	addr := ap.Addr()
-	if !addr.Is4() {
+	if !addr.Is4() && !addr.Is4In6() {
 		return syscall.SockaddrInet4{}, &AddrError{Err: "non-IPv4 address", Addr: addr.String()}
 	}
 	sa := syscall.SockaddrInet4{

src/net/udpsock_test.go

@@ -705,3 +705,35 @@ func TestIPv6WriteMsgUDPAddrPortTargetAddrIPVersion(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+// TestIPv4WriteMsgUDPAddrPortTargetAddrIPVersion verifies that
+// WriteMsgUDPAddrPort accepts IPv4 and IPv4-mapped IPv6 destination addresses,
+// and rejects IPv6 destination addresses on a "udp4" connection.
+func TestIPv4WriteMsgUDPAddrPortTargetAddrIPVersion(t *testing.T) {
+	if !testableNetwork("udp4") {
+		t.Skipf("skipping: udp4 not available")
+	}
+
+	conn, err := ListenUDP("udp4", &UDPAddr{IP: IPv4(127, 0, 0, 1)})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer conn.Close()
+
+	daddr4 := netip.AddrPortFrom(netip.MustParseAddr("127.0.0.1"), 12345)
+	daddr4in6 := netip.AddrPortFrom(netip.MustParseAddr("::ffff:127.0.0.1"), 12345)
+	daddr6 := netip.AddrPortFrom(netip.MustParseAddr("::1"), 12345)
+	buf := make([]byte, 8)
+
+	if _, _, err = conn.WriteMsgUDPAddrPort(buf, nil, daddr4); err != nil {
+		t.Errorf("conn.WriteMsgUDPAddrPort(buf, nil, daddr4) failed: %v", err)
+	}
+
+	if _, _, err = conn.WriteMsgUDPAddrPort(buf, nil, daddr4in6); err != nil {
+		t.Errorf("conn.WriteMsgUDPAddrPort(buf, nil, daddr4in6) failed: %v", err)
+	}
+
+	if _, _, err = conn.WriteMsgUDPAddrPort(buf, nil, daddr6); err == nil {
+		t.Errorf("conn.WriteMsgUDPAddrPort(buf, nil, daddr6) should have failed, but got no error")
+	}
+}

src/os/exec/lp_plan9.go

@@ -36,7 +36,7 @@ func findExecutable(file string) error {
 // As of Go 1.19, LookPath will instead return that path along with an error satisfying
 // [errors.Is](err, [ErrDot]). See the package documentation for more details.
 func LookPath(file string) (string, error) {
-	if err := validateLookPath(file); err != nil {
+	if err := validateLookPath(filepath.Clean(file)); err != nil {
 		return "", &Error{file, err}
 	}
 

src/os/os_windows_test.go

@@ -1845,6 +1845,44 @@ func TestFile(t *testing.T) {
 	}
 }
 
+func TestFileOverlappedSeek(t *testing.T) {
+	t.Parallel()
+	name := filepath.Join(t.TempDir(), "foo")
+	f := newFileOverlapped(t, name, true)
+	content := []byte("foo")
+	if _, err := f.Write(content); err != nil {
+		t.Fatal(err)
+	}
+	// Check that the file pointer is at the expected offset.
+	n, err := f.Seek(0, io.SeekCurrent)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if n != int64(len(content)) {
+		t.Errorf("expected file pointer to be at offset %d, got %d", len(content), n)
+	}
+	// Set the file pointer to the start of the file.
+	if _, err := f.Seek(0, io.SeekStart); err != nil {
+		t.Fatal(err)
+	}
+	// Read the first byte.
+	var buf [1]byte
+	if _, err := f.Read(buf[:]); err != nil {
+		t.Fatal(err)
+	}
+	if !bytes.Equal(buf[:], content[:len(buf)]) {
+		t.Errorf("expected %q, got %q", content[:len(buf)], buf[:])
+	}
+	// Check that the file pointer is at the expected offset.
+	n, err = f.Seek(0, io.SeekCurrent)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if n != int64(len(buf)) {
+		t.Errorf("expected file pointer to be at offset %d, got %d", len(buf), n)
+	}
+}
+
 func TestPipe(t *testing.T) {
 	t.Parallel()
 	r, w, err := os.Pipe()

src/os/removeall_at.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.
 
-//go:build unix || wasip1 || windows
+//go:build unix || wasip1
 
 package os
 

src/os/removeall_noat.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.
 
-//go:build (js && wasm) || plan9
+//go:build (js && wasm) || plan9 || windows
 
 package os
 

src/os/root.go

@@ -189,12 +189,6 @@ func (r *Root) Remove(name string) error {
 	return rootRemove(r, name)
 }
 
-// RemoveAll removes the named file or directory and any children that it contains.
-// See [RemoveAll] for more details.
-func (r *Root) RemoveAll(name string) error {
-	return rootRemoveAll(r, name)
-}
-
 // Stat returns a [FileInfo] describing the named file in the root.
 // See [Stat] for more details.
 func (r *Root) Stat(name string) (FileInfo, error) {

src/os/root_noopenat.go

@@ -11,7 +11,6 @@ import (
 	"internal/filepathlite"
 	"internal/stringslite"
 	"sync/atomic"
-	"syscall"
 	"time"
 )
 
@@ -186,25 +185,6 @@ func rootRemove(r *Root, name string) error {
 	return nil
 }
 
-func rootRemoveAll(r *Root, name string) error {
-	if endsWithDot(name) {
-		// Consistency with os.RemoveAll: Return EINVAL when trying to remove .
-		return &PathError{Op: "RemoveAll", Path: name, Err: syscall.EINVAL}
-	}
-	if err := checkPathEscapesLstat(r, name); err != nil {
-		if err == syscall.ENOTDIR {
-			// Some intermediate path component is not a directory.
-			// RemoveAll treats this as success (since the target doesn't exist).
-			return nil
-		}
-		return &PathError{Op: "RemoveAll", Path: name, Err: err}
-	}
-	if err := RemoveAll(joinPath(r.root.name, name)); err != nil {
-		return &PathError{Op: "RemoveAll", Path: name, Err: underlyingError(err)}
-	}
-	return nil
-}
-
 func rootReadlink(r *Root, name string) (string, error) {
 	if err := checkPathEscapesLstat(r, name); err != nil {
 		return "", &PathError{Op: "readlinkat", Path: name, Err: err}

src/os/root_openat.go

@@ -194,28 +194,6 @@ func rootRemove(r *Root, name string) error {
 	return nil
 }
 
-func rootRemoveAll(r *Root, name string) error {
-	// Consistency with os.RemoveAll: Strip trailing /s from the name,
-	// so RemoveAll("not_a_directory/") succeeds.
-	for len(name) > 0 && IsPathSeparator(name[len(name)-1]) {
-		name = name[:len(name)-1]
-	}
-	if endsWithDot(name) {
-		// Consistency with os.RemoveAll: Return EINVAL when trying to remove .
-		return &PathError{Op: "RemoveAll", Path: name, Err: syscall.EINVAL}
-	}
-	_, err := doInRoot(r, name, nil, func(parent sysfdType, name string) (struct{}, error) {
-		return struct{}{}, removeAllFrom(parent, name)
-	})
-	if IsNotExist(err) {
-		return nil
-	}
-	if err != nil {
-		return &PathError{Op: "RemoveAll", Path: name, Err: underlyingError(err)}
-	}
-	return err
-}
-
 func rootRename(r *Root, oldname, newname string) error {
 	_, err := doInRoot(r, oldname, nil, func(oldparent sysfdType, oldname string) (struct{}, error) {
 		_, err := doInRoot(r, newname, nil, func(newparent sysfdType, newname string) (struct{}, error) {

src/runtime/chan.go

@@ -191,7 +191,7 @@ func chansend(c *hchan, ep unsafe.Pointer, block bool, callerpc uintptr) bool {
 	}
 
 	if c.bubble != nil && getg().bubble != c.bubble {
-		panic(plainError("send on synctest channel from outside bubble"))
+		fatal("send on synctest channel from outside bubble")
 	}
 
 	// Fast path: check for failed non-blocking operation without acquiring the lock.
@@ -318,7 +318,7 @@ func chansend(c *hchan, ep unsafe.Pointer, block bool, callerpc uintptr) bool {
 func send(c *hchan, sg *sudog, ep unsafe.Pointer, unlockf func(), skip int) {
 	if c.bubble != nil && getg().bubble != c.bubble {
 		unlockf()
-		panic(plainError("send on synctest channel from outside bubble"))
+		fatal("send on synctest channel from outside bubble")
 	}
 	if raceenabled {
 		if c.dataqsiz == 0 {
@@ -416,7 +416,7 @@ func closechan(c *hchan) {
 		panic(plainError("close of nil channel"))
 	}
 	if c.bubble != nil && getg().bubble != c.bubble {
-		panic(plainError("close of synctest channel from outside bubble"))
+		fatal("close of synctest channel from outside bubble")
 	}
 
 	lock(&c.lock)
@@ -538,7 +538,7 @@ func chanrecv(c *hchan, ep unsafe.Pointer, block bool) (selected, received bool)
 	}
 
 	if c.bubble != nil && getg().bubble != c.bubble {
-		panic(plainError("receive on synctest channel from outside bubble"))
+		fatal("receive on synctest channel from outside bubble")
 	}
 
 	if c.timer != nil {
@@ -702,7 +702,7 @@ func chanrecv(c *hchan, ep unsafe.Pointer, block bool) (selected, received bool)
 func recv(c *hchan, sg *sudog, ep unsafe.Pointer, unlockf func(), skip int) {
 	if c.bubble != nil && getg().bubble != c.bubble {
 		unlockf()
-		panic(plainError("receive on synctest channel from outside bubble"))
+		fatal("receive on synctest channel from outside bubble")
 	}
 	if c.dataqsiz == 0 {
 		if raceenabled {

src/runtime/race.go

@@ -406,10 +406,6 @@ var __tsan_report_count byte
 //go:cgo_import_static __tsan_go_atomic64_exchange
 //go:cgo_import_static __tsan_go_atomic32_fetch_add
 //go:cgo_import_static __tsan_go_atomic64_fetch_add
-//go:cgo_import_static __tsan_go_atomic32_fetch_and
-//go:cgo_import_static __tsan_go_atomic64_fetch_and
-//go:cgo_import_static __tsan_go_atomic32_fetch_or
-//go:cgo_import_static __tsan_go_atomic64_fetch_or
 //go:cgo_import_static __tsan_go_atomic32_compare_exchange
 //go:cgo_import_static __tsan_go_atomic64_compare_exchange
 
@@ -738,36 +734,6 @@ func abigen_sync_atomic_AddUint64(addr *uint64, delta uint64) (new uint64)
 //go:linkname abigen_sync_atomic_AddUintptr sync/atomic.AddUintptr
 func abigen_sync_atomic_AddUintptr(addr *uintptr, delta uintptr) (new uintptr)
 
-//go:linkname abigen_sync_atomic_AndInt32 sync/atomic.AndInt32
-func abigen_sync_atomic_AndInt32(addr *int32, mask int32) (old int32)
-
-//go:linkname abigen_sync_atomic_AndUint32 sync/atomic.AndUint32
-func abigen_sync_atomic_AndUint32(addr *uint32, mask uint32) (old uint32)
-
-//go:linkname abigen_sync_atomic_AndInt64 sync/atomic.AndInt64
-func abigen_sync_atomic_AndInt64(addr *int64, mask int64) (old int64)
-
-//go:linkname abigen_sync_atomic_AndUint64 sync/atomic.AndUint64
-func abigen_sync_atomic_AndUint64(addr *uint64, mask uint64) (old uint64)
-
-//go:linkname abigen_sync_atomic_AndUintptr sync/atomic.AndUintptr
-func abigen_sync_atomic_AndUintptr(addr *uintptr, mask uintptr) (old uintptr)
-
-//go:linkname abigen_sync_atomic_OrInt32 sync/atomic.OrInt32
-func abigen_sync_atomic_OrInt32(addr *int32, mask int32) (old int32)
-
-//go:linkname abigen_sync_atomic_OrUint32 sync/atomic.OrUint32
-func abigen_sync_atomic_OrUint32(addr *uint32, mask uint32) (old uint32)
-
-//go:linkname abigen_sync_atomic_OrInt64 sync/atomic.OrInt64
-func abigen_sync_atomic_OrInt64(addr *int64, mask int64) (old int64)
-
-//go:linkname abigen_sync_atomic_OrUint64 sync/atomic.OrUint64
-func abigen_sync_atomic_OrUint64(addr *uint64, mask uint64) (old uint64)
-
-//go:linkname abigen_sync_atomic_OrUintptr sync/atomic.OrUintptr
-func abigen_sync_atomic_OrUintptr(addr *uintptr, mask uintptr) (old uintptr)
-
 //go:linkname abigen_sync_atomic_CompareAndSwapInt32 sync/atomic.CompareAndSwapInt32
 func abigen_sync_atomic_CompareAndSwapInt32(addr *int32, old, new int32) (swapped bool)
 

src/runtime/race_amd64.s

@@ -303,57 +303,6 @@ TEXT	sync∕atomic·AddUintptr(SB), NOSPLIT, $0-24
 	GO_ARGS
 	JMP	sync∕atomic·AddInt64(SB)
 
-// And
-TEXT	sync∕atomic·AndInt32(SB), NOSPLIT|NOFRAME, $0-20
-	GO_ARGS
-	MOVQ	$__tsan_go_atomic32_fetch_and(SB), AX
-	CALL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·AndInt64(SB), NOSPLIT|NOFRAME, $0-24
-	GO_ARGS
-	MOVQ	$__tsan_go_atomic64_fetch_and(SB), AX
-	CALL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·AndUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	JMP	sync∕atomic·AndInt32(SB)
-
-TEXT	sync∕atomic·AndUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·AndInt64(SB)
-
-TEXT	sync∕atomic·AndUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·AndInt64(SB)
-
-// Or
-TEXT	sync∕atomic·OrInt32(SB), NOSPLIT|NOFRAME, $0-20
-	GO_ARGS
-	MOVQ	$__tsan_go_atomic32_fetch_or(SB), AX
-	CALL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·OrInt64(SB), NOSPLIT|NOFRAME, $0-24
-	GO_ARGS
-	MOVQ	$__tsan_go_atomic64_fetch_or(SB), AX
-	CALL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·OrUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	JMP	sync∕atomic·OrInt32(SB)
-
-TEXT	sync∕atomic·OrUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·OrInt64(SB)
-
-TEXT	sync∕atomic·OrUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·OrInt64(SB)
-
-
 // CompareAndSwap
 TEXT	sync∕atomic·CompareAndSwapInt32(SB), NOSPLIT|NOFRAME, $0-17
 	GO_ARGS

src/runtime/race_arm64.s

@@ -312,56 +312,6 @@ TEXT	sync∕atomic·AddUintptr(SB), NOSPLIT, $0-24
 	GO_ARGS
 	JMP	sync∕atomic·AddInt64(SB)
 
-// And
-TEXT	sync∕atomic·AndInt32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	MOVD	$__tsan_go_atomic32_fetch_and(SB), R9
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·AndInt64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	MOVD	$__tsan_go_atomic64_fetch_and(SB), R9
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·AndUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	JMP	sync∕atomic·AndInt32(SB)
-
-TEXT	sync∕atomic·AndUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·AndInt64(SB)
-
-TEXT	sync∕atomic·AndUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·AndInt64(SB)
-
-// Or
-TEXT	sync∕atomic·OrInt32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	MOVD	$__tsan_go_atomic32_fetch_or(SB), R9
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·OrInt64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	MOVD	$__tsan_go_atomic64_fetch_or(SB), R9
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·OrUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	JMP	sync∕atomic·OrInt32(SB)
-
-TEXT	sync∕atomic·OrUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·OrInt64(SB)
-
-TEXT	sync∕atomic·OrUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·OrInt64(SB)
-
 // CompareAndSwap
 TEXT	sync∕atomic·CompareAndSwapInt32(SB), NOSPLIT, $0-17
 	GO_ARGS

src/runtime/race_ppc64le.s

@@ -325,52 +325,6 @@ TEXT	sync∕atomic·AddUintptr(SB), NOSPLIT, $0-24
 	GO_ARGS
 	BR	sync∕atomic·AddInt64(SB)
 
-// And
-TEXT	sync∕atomic·AndInt32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	MOVD	$__tsan_go_atomic32_fetch_and(SB), R8
-	BR	racecallatomic<>(SB)
-
-TEXT	sync∕atomic·AndInt64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	MOVD	$__tsan_go_atomic64_fetch_and(SB), R8
-	BR	racecallatomic<>(SB)
-
-TEXT	sync∕atomic·AndUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	BR	sync∕atomic·AndInt32(SB)
-
-TEXT	sync∕atomic·AndUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	BR	sync∕atomic·AndInt64(SB)
-
-TEXT	sync∕atomic·AndUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	BR	sync∕atomic·AndInt64(SB)
-
-// Or
-TEXT	sync∕atomic·OrInt32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	MOVD	$__tsan_go_atomic32_fetch_or(SB), R8
-	BR	racecallatomic<>(SB)
-
-TEXT	sync∕atomic·OrInt64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	MOVD	$__tsan_go_atomic64_fetch_or(SB), R8
-	BR	racecallatomic<>(SB)
-
-TEXT	sync∕atomic·OrUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	BR	sync∕atomic·OrInt32(SB)
-
-TEXT	sync∕atomic·OrUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	BR	sync∕atomic·OrInt64(SB)
-
-TEXT	sync∕atomic·OrUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	BR	sync∕atomic·OrInt64(SB)
-
 // CompareAndSwap in tsan
 TEXT	sync∕atomic·CompareAndSwapInt32(SB), NOSPLIT, $0-17
 	GO_ARGS

src/runtime/race_s390x.s

@@ -274,56 +274,6 @@ TEXT	sync∕atomic·AddUintptr(SB), NOSPLIT, $0-24
 	GO_ARGS
 	JMP	sync∕atomic·AddInt64(SB)
 
-// And
-TEXT	sync∕atomic·AndInt32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	MOVD	$__tsan_go_atomic32_fetch_and(SB), R1
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·AndInt64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	MOVD	$__tsan_go_atomic64_fetch_and(SB), R1
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·AndUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	JMP	sync∕atomic·AndInt32(SB)
-
-TEXT	sync∕atomic·AndUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·AndInt64(SB)
-
-TEXT	sync∕atomic·AndUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·AndInt64(SB)
-
-// Or
-TEXT	sync∕atomic·OrInt32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	MOVD	$__tsan_go_atomic32_fetch_or(SB), R1
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·OrInt64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	MOVD	$__tsan_go_atomic64_fetch_or(SB), R1
-	BL	racecallatomic<>(SB)
-	RET
-
-TEXT	sync∕atomic·OrUint32(SB), NOSPLIT, $0-20
-	GO_ARGS
-	JMP	sync∕atomic·OrInt32(SB)
-
-TEXT	sync∕atomic·OrUint64(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·OrInt64(SB)
-
-TEXT	sync∕atomic·OrUintptr(SB), NOSPLIT, $0-24
-	GO_ARGS
-	JMP	sync∕atomic·OrInt64(SB)
-
 // CompareAndSwap
 
 TEXT	sync∕atomic·CompareAndSwapInt32(SB), NOSPLIT, $0-17

src/runtime/select.go

@@ -178,7 +178,7 @@ func selectgo(cas0 *scase, order0 *uint16, pc0 *uintptr, nsends, nrecvs int, blo
 
 		if cas.c.bubble != nil {
 			if getg().bubble != cas.c.bubble {
-				panic(plainError("select on synctest channel from outside bubble"))
+				fatal("select on synctest channel from outside bubble")
 			}
 		} else {
 			allSynctest = false

src/runtime/time.go

@@ -415,7 +415,7 @@ func newTimer(when, period int64, f func(arg any, seq uintptr, delay int64), arg
 //go:linkname stopTimer time.stopTimer
 func stopTimer(t *timeTimer) bool {
 	if t.isFake && getg().bubble == nil {
-		panic("stop of synctest timer from outside bubble")
+		fatal("stop of synctest timer from outside bubble")
 	}
 	return t.stop()
 }
@@ -430,7 +430,7 @@ func resetTimer(t *timeTimer, when, period int64) bool {
 		racerelease(unsafe.Pointer(&t.timer))
 	}
 	if t.isFake && getg().bubble == nil {
-		panic("reset of synctest timer from outside bubble")
+		fatal("reset of synctest timer from outside bubble")
 	}
 	return t.reset(when, period)
 }

src/sync/atomic/asm.s

@@ -83,33 +83,3 @@ TEXT ·StoreUint64(SB),NOSPLIT,$0
 
 TEXT ·StoreUintptr(SB),NOSPLIT,$0
 	JMP	internal∕runtime∕atomic·Storeuintptr(SB)
-
-TEXT ·AndInt32(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·And32(SB)
-
-TEXT ·AndUint32(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·And32(SB)
-
-TEXT ·AndUintptr(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·Anduintptr(SB)
-
-TEXT ·AndInt64(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·And64(SB)
-
-TEXT ·AndUint64(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·And64(SB)
-
-TEXT ·OrInt32(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·Or32(SB)
-
-TEXT ·OrUint32(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·Or32(SB)
-
-TEXT ·OrUintptr(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·Oruintptr(SB)
-
-TEXT ·OrInt64(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·Or64(SB)
-
-TEXT ·OrUint64(SB),NOSPLIT,$0
-	JMP	internal∕runtime∕atomic·Or64(SB)

src/sync/atomic/atomic_test.go

@@ -531,472 +531,6 @@ func TestAddUintptrMethod(t *testing.T) {
 	}
 }
 
-func TestAndInt32(t *testing.T) {
-	var x struct {
-		before int32
-		i      int32
-		after  int32
-	}
-	x.before = magic32
-	x.after = magic32
-	x.i = -1
-	j := x.i
-	for mask := int32(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := AndInt32(&x.i, ^mask)
-		j &= ^mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestAndInt32Method(t *testing.T) {
-	var x struct {
-		before int32
-		i      Int32
-		after  int32
-	}
-	x.before = magic32
-	x.after = magic32
-	x.i.Store(-1)
-	j := x.i.Load()
-	for mask := int32(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.And(^mask)
-		j &= ^mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestAndUint32(t *testing.T) {
-	var x struct {
-		before uint32
-		i      uint32
-		after  uint32
-	}
-	x.before = magic32
-	x.after = magic32
-	x.i = 0xffffffff
-	j := x.i
-	for mask := uint32(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := AndUint32(&x.i, ^mask)
-		j &= ^mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestAndUint32Method(t *testing.T) {
-	var x struct {
-		before uint32
-		i      Uint32
-		after  uint32
-	}
-	x.before = magic32
-	x.after = magic32
-	x.i.Store(0xffffffff)
-	j := x.i.Load()
-	for mask := uint32(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.And(^mask)
-		j &= ^mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestAndInt64(t *testing.T) {
-	var x struct {
-		before int64
-		i      int64
-		after  int64
-	}
-	magic64 := int64(magic64)
-	x.before = magic64
-	x.after = magic64
-	x.i = -1
-	j := x.i
-	for mask := int64(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := AndInt64(&x.i, ^mask)
-		j &= ^mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestAndInt64Method(t *testing.T) {
-	var x struct {
-		before int64
-		i      Int64
-		after  int64
-	}
-	magic64 := int64(magic64)
-	x.before = magic64
-	x.after = magic64
-	x.i.Store(-1)
-	j := x.i.Load()
-	for mask := int64(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.And(^mask)
-		j &= ^mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestAndUint64(t *testing.T) {
-	var x struct {
-		before uint64
-		i      uint64
-		after  uint64
-	}
-	magic64 := uint64(magic64)
-	x.before = magic64
-	x.after = magic64
-	x.i = 0xfffffffffffffff
-	j := x.i
-	for mask := uint64(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := AndUint64(&x.i, ^mask)
-		j &= ^mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestAndUint64Method(t *testing.T) {
-	var x struct {
-		before uint64
-		i      Uint64
-		after  uint64
-	}
-	magic64 := uint64(magic64)
-	x.before = magic64
-	x.after = magic64
-	x.i.Store(0xfffffffffffffff)
-	j := x.i.Load()
-	for mask := uint64(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.And(^mask)
-		j &= ^mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestAndUintptr(t *testing.T) {
-	var x struct {
-		before uintptr
-		i      uintptr
-		after  uintptr
-	}
-	var m uint64 = magic64
-	magicptr := uintptr(m)
-	x.before = magicptr
-	x.after = magicptr
-	x.i = ^uintptr(0)
-	j := x.i
-	for mask := uintptr(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := AndUintptr(&x.i, ^mask)
-		j &= ^mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magicptr || x.after != magicptr {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magicptr, magicptr)
-	}
-}
-
-func TestAndUintptrMethod(t *testing.T) {
-	var x struct {
-		before uintptr
-		i      Uintptr
-		after  uintptr
-	}
-	var m uint64 = magic64
-	magicptr := uintptr(m)
-	x.before = magicptr
-	x.after = magicptr
-	x.i.Store(^uintptr(0))
-	j := x.i.Load()
-	for mask := uintptr(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.And(^mask)
-		j &= ^mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magicptr || x.after != magicptr {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magicptr, magicptr)
-	}
-}
-
-func TestOrInt32(t *testing.T) {
-	var x struct {
-		before int32
-		i      int32
-		after  int32
-	}
-	x.before = magic32
-	x.after = magic32
-	var j int32
-	for mask := int32(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := OrInt32(&x.i, mask)
-		j |= mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestOrInt32Method(t *testing.T) {
-	var x struct {
-		before int32
-		i      Int32
-		after  int32
-	}
-	x.before = magic32
-	x.after = magic32
-	var j int32
-	for mask := int32(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.Or(mask)
-		j |= mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestOrUint32(t *testing.T) {
-	var x struct {
-		before uint32
-		i      uint32
-		after  uint32
-	}
-	x.before = magic32
-	x.after = magic32
-	var j uint32
-	for mask := uint32(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := OrUint32(&x.i, mask)
-		j |= mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestOrUint32Method(t *testing.T) {
-	var x struct {
-		before uint32
-		i      Uint32
-		after  uint32
-	}
-	x.before = magic32
-	x.after = magic32
-	var j uint32
-	for mask := uint32(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.Or(mask)
-		j |= mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic32 || x.after != magic32 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic32, magic32)
-	}
-}
-
-func TestOrInt64(t *testing.T) {
-	var x struct {
-		before int64
-		i      int64
-		after  int64
-	}
-	magic64 := int64(magic64)
-	x.before = magic64
-	x.after = magic64
-	var j int64
-	for mask := int64(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := OrInt64(&x.i, mask)
-		j |= mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestOrInt64Method(t *testing.T) {
-	var x struct {
-		before int64
-		i      Int64
-		after  int64
-	}
-	magic64 := int64(magic64)
-	x.before = magic64
-	x.after = magic64
-	var j int64
-	for mask := int64(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.Or(mask)
-		j |= mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestOrUint64(t *testing.T) {
-	var x struct {
-		before uint64
-		i      uint64
-		after  uint64
-	}
-	magic64 := uint64(magic64)
-	x.before = magic64
-	x.after = magic64
-	var j uint64
-	for mask := uint64(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := OrUint64(&x.i, mask)
-		j |= mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestOrUint64Method(t *testing.T) {
-	var x struct {
-		before uint64
-		i      Uint64
-		after  uint64
-	}
-	magic64 := uint64(magic64)
-	x.before = magic64
-	x.after = magic64
-	var j uint64
-	for mask := uint64(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.Or(mask)
-		j |= mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magic64 || x.after != magic64 {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magic64, magic64)
-	}
-}
-
-func TestOrUintptr(t *testing.T) {
-	var x struct {
-		before uintptr
-		i      uintptr
-		after  uintptr
-	}
-	var m uint64 = magic64
-	magicptr := uintptr(m)
-	x.before = magicptr
-	x.after = magicptr
-	var j uintptr
-	for mask := uintptr(1); mask != 0; mask <<= 1 {
-		old := x.i
-		k := OrUintptr(&x.i, mask)
-		j |= mask
-		if x.i != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i, j, k, old)
-		}
-	}
-	if x.before != magicptr || x.after != magicptr {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magicptr, magicptr)
-	}
-}
-
-func TestOrUintptrMethod(t *testing.T) {
-	var x struct {
-		before uintptr
-		i      Uintptr
-		after  uintptr
-	}
-	var m uint64 = magic64
-	magicptr := uintptr(m)
-	x.before = magicptr
-	x.after = magicptr
-	var j uintptr
-	for mask := uintptr(1); mask != 0; mask <<= 1 {
-		old := x.i.Load()
-		k := x.i.Or(mask)
-		j |= mask
-		if x.i.Load() != j || k != old {
-			t.Fatalf("mask=%d i=%d j=%d k=%d old=%d", mask, x.i.Load(), j, k, old)
-		}
-	}
-	if x.before != magicptr || x.after != magicptr {
-		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magicptr, magicptr)
-	}
-}
-
 func TestCompareAndSwapInt32(t *testing.T) {
 	var x struct {
 		before int32

src/sync/atomic/doc.go

@@ -128,48 +128,6 @@ func AddUint32(addr *uint32, delta uint32) (new uint32)
 //go:noescape
 func AddUintptr(addr *uintptr, delta uintptr) (new uintptr)
 
-// AndInt32 atomically performs a bitwise AND operation on *addr using the bitmask provided as mask
-// and returns the old value.
-// Consider using the more ergonomic and less error-prone [Int32.And] instead.
-//
-//go:noescape
-func AndInt32(addr *int32, mask int32) (old int32)
-
-// AndUint32 atomically performs a bitwise AND operation on *addr using the bitmask provided as mask
-// and returns the old value.
-// Consider using the more ergonomic and less error-prone [Uint32.And] instead.
-//
-//go:noescape
-func AndUint32(addr *uint32, mask uint32) (old uint32)
-
-// AndUintptr atomically performs a bitwise AND operation on *addr using the bitmask provided as mask
-// and returns the old value.
-// Consider using the more ergonomic and less error-prone [Uintptr.And] instead.
-//
-//go:noescape
-func AndUintptr(addr *uintptr, mask uintptr) (old uintptr)
-
-// OrInt32 atomically performs a bitwise OR operation on *addr using the bitmask provided as mask
-// and returns the old value.
-// Consider using the more ergonomic and less error-prone [Int32.Or] instead.
-//
-//go:noescape
-func OrInt32(addr *int32, mask int32) (old int32)
-
-// OrUint32 atomically performs a bitwise OR operation on *addr using the bitmask provided as mask
-// and returns the old value.
-// Consider using the more ergonomic and less error-prone [Uint32.Or] instead.
-//
-//go:noescape
-func OrUint32(addr *uint32, mask uint32) (old uint32)
-
-// OrUintptr atomically performs a bitwise OR operation on *addr using the bitmask provided as mask
-// and returns the old value.
-// Consider using the more ergonomic and less error-prone [Uintptr.Or] instead.
-//
-//go:noescape
-func OrUintptr(addr *uintptr, mask uintptr) (old uintptr)
-
 // LoadInt32 atomically loads *addr.
 // Consider using the more ergonomic and less error-prone [Int32.Load] instead.
 //

src/sync/atomic/type.go

@@ -93,14 +93,6 @@ func (x *Int32) CompareAndSwap(old, new int32) (swapped bool) {
 // Add atomically adds delta to x and returns the new value.
 func (x *Int32) Add(delta int32) (new int32) { return AddInt32(&x.v, delta) }
 
-// And atomically performs a bitwise AND operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Int32) And(mask int32) (old int32) { return AndInt32(&x.v, mask) }
-
-// Or atomically performs a bitwise OR operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Int32) Or(mask int32) (old int32) { return OrInt32(&x.v, mask) }
-
 // An Int64 is an atomic int64. The zero value is zero.
 //
 // Int64 must not be copied after first use.
@@ -127,14 +119,6 @@ func (x *Int64) CompareAndSwap(old, new int64) (swapped bool) {
 // Add atomically adds delta to x and returns the new value.
 func (x *Int64) Add(delta int64) (new int64) { return AddInt64(&x.v, delta) }
 
-// And atomically performs a bitwise AND operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Int64) And(mask int64) (old int64) { return AndInt64(&x.v, mask) }
-
-// Or atomically performs a bitwise OR operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Int64) Or(mask int64) (old int64) { return OrInt64(&x.v, mask) }
-
 // A Uint32 is an atomic uint32. The zero value is zero.
 //
 // Uint32 must not be copied after first use.
@@ -160,14 +144,6 @@ func (x *Uint32) CompareAndSwap(old, new uint32) (swapped bool) {
 // Add atomically adds delta to x and returns the new value.
 func (x *Uint32) Add(delta uint32) (new uint32) { return AddUint32(&x.v, delta) }
 
-// And atomically performs a bitwise AND operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Uint32) And(mask uint32) (old uint32) { return AndUint32(&x.v, mask) }
-
-// Or atomically performs a bitwise OR operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Uint32) Or(mask uint32) (old uint32) { return OrUint32(&x.v, mask) }
-
 // A Uint64 is an atomic uint64. The zero value is zero.
 //
 // Uint64 must not be copied after first use.
@@ -194,14 +170,6 @@ func (x *Uint64) CompareAndSwap(old, new uint64) (swapped bool) {
 // Add atomically adds delta to x and returns the new value.
 func (x *Uint64) Add(delta uint64) (new uint64) { return AddUint64(&x.v, delta) }
 
-// And atomically performs a bitwise AND operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Uint64) And(mask uint64) (old uint64) { return AndUint64(&x.v, mask) }
-
-// Or atomically performs a bitwise OR operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Uint64) Or(mask uint64) (old uint64) { return OrUint64(&x.v, mask) }
-
 // A Uintptr is an atomic uintptr. The zero value is zero.
 //
 // Uintptr must not be copied after first use.
@@ -227,14 +195,6 @@ func (x *Uintptr) CompareAndSwap(old, new uintptr) (swapped bool) {
 // Add atomically adds delta to x and returns the new value.
 func (x *Uintptr) Add(delta uintptr) (new uintptr) { return AddUintptr(&x.v, delta) }
 
-// And atomically performs a bitwise AND operation on x using the bitmask
-// provided as mask and returns the old value.
-func (x *Uintptr) And(mask uintptr) (old uintptr) { return AndUintptr(&x.v, mask) }
-
-// Or atomically performs a bitwise OR operation on x using the bitmask
-// provided as mask and returns the updated value after the OR operation.
-func (x *Uintptr) Or(mask uintptr) (old uintptr) { return OrUintptr(&x.v, mask) }
-
 // noCopy may be added to structs which must not be copied
 // after the first use.
 //

src/sync/waitgroup.go

@@ -94,10 +94,19 @@ func (wg *WaitGroup) Add(delta int) {
 			fatal("sync: WaitGroup.Add called from multiple synctest bubbles")
 		case synctest.CurrentBubble:
 			bubbled = true
-			state := wg.state.Or(waitGroupBubbleFlag)
-			if state != 0 && state&waitGroupBubbleFlag == 0 {
-				// Add has been called from outside this bubble.
-				fatal("sync: WaitGroup.Add called from inside and outside synctest bubble")
+			// Use compare-and-swap loop to implement atomic Or operation
+			// since race detector doesn't have __tsan_go_atomic64_fetch_or
+			for {
+				old := wg.state.Load()
+				new := old | waitGroupBubbleFlag
+				if wg.state.CompareAndSwap(old, new) {
+					state := old
+					if state != 0 && state&waitGroupBubbleFlag == 0 {
+						// Add has been called from outside this bubble.
+						fatal("sync: WaitGroup.Add called from inside and outside synctest bubble")
+					}
+					break
+				}
 			}
 		}
 	}