// See the WaitGroup example.
func (wg *WaitGroup) Add(delta int) {
	if race.Enabled {
		if delta < 0 {
			// Synchronize decrements with Wait.
			race.ReleaseMerge(unsafe.Pointer(wg))
		}
		race.Disable()
		defer race.Enable()
	}
	state := wg.state.Add(uint64(delta) << 32)
	v := int32(state >> 32)
	w := uint32(state)
	if race.Enabled && delta > 0 && v == int32(delta) {

}

func (f *zeroPanicker) String() string {
	if !f.dontPanic {
		panic("panic!")
	}
	return f.v
}

const defaultOutput = `  -A	for bootstrapping, allow 'any' type
  -Alongflagname
    	disable bounds checking
  -C	a boolean defaulting to true (default true)
  -D path
    	set relative path for local imports
  -E string
    	issue 23543 (default "0")
  -F number
    	a non-zero number (default 2.7)

// panic.
//
// The fallback behavior can be forced on all platforms, even when there is a
// system certificate pool, by setting GODEBUG=x509usefallbackroots=1 (note that
// on Windows and macOS this will disable usage of the platform verification
// APIs and cause the pure Go verifier to be used). Setting
// x509usefallbackroots=1 without calling SetFallbackRoots has no effect.
func SetFallbackRoots(roots *CertPool) {
	if roots == nil {

func toolenv() []string {
	var env []string
	if !mustLinkExternal(goos, goarch, false) {
		// Unless the platform requires external linking,
		// we disable cgo to get static binaries for cmd/go and cmd/pprof,
		// so that they work on systems without the same dynamic libraries
		// as the original build system.
		env = append(env, "CGO_ENABLED=0")
	}

//
//go:build !race

package sync_test

import (
	"runtime"
	"runtime/debug"
	"slices"
	. "sync"
	"sync/atomic"
	"testing"
	"time"
)

func TestPool(t *testing.T) {
	// disable GC so we can control when it happens.
	defer debug.SetGCPercent(debug.SetGCPercent(-1))
	var p Pool
	if p.Get() != nil {
		t.Fatal("expected empty")
	}

	// Make sure that the goroutine doesn't migrate to another P

	os.Setenv("GOARCH", "")
	os.Setenv("GOHOSTARCH", "")

	// Run Go bootstrap to build binaries.
	// Use the math_big_pure_go build tag to disable the assembly in math/big
	// which may contain unsupported instructions.
	// Use the purego build tag to disable other assembly code,
	// such as in cmd/internal/notsha256.
	cmd := []string{
		pathf("%s/bin/go", goroot_bootstrap),
		"install",

	// Replace x.go:19[/tmp/.../x.cgo1.go:18] with x.go:19.
	// Replace *[100]_Ctype_foo with *[100]C.foo.
	// If we're using -x, assume we're debugging and want the full dump, so disable the rewrite.
	if !cfg.BuildX && cgoLine.MatchString(out) {
		out = cgoLine.ReplaceAllString(out, "")
		out = cgoTypeSigRe.ReplaceAllString(out, "C.")
	}

		}
	}
}

// setProcessCPUProfilerTimer is called when the profiling timer changes.
// It is called with prof.signalLock held. hz is the new timer, and is 0 if
// profiling is being disabled. Enable or disable the signal as
// required for -buildmode=c-archive.
func setProcessCPUProfilerTimer(hz int32) {
	if hz != 0 {
		// Enable the Go signal handler if not enabled.
		if atomic.Cas(&handlingSig[_SIGPROF], 0, 1) {

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

	RunDespiteErrors: true,
	Run:              run,
}

func run(pass *analysis.Pass) (any, error) {
	// Prior to go1.22, versions.FileVersion returns only the
	// toolchain version, which is of no use to us, so
	// disable this analyzer on earlier versions.
	if !slicesContains(build.Default.ReleaseTags, "go1.22") {
		return nil, nil
	}

	// Don't report diagnostics for modules marked before go1.21,