dup("[]int"),
	dup("*int"),
	dup("struct{x int}"),
	dup("func()"),
	dup("func(int, float32) string"),
	dup("interface{m()}"),
	dup("interface{m() string; n(x int)}"),
	dup("interface{~int}"),

	dup("map[string]int"),
	dup("chan E"),
	dup("<-chan E"),
	dup("chan<- E"),

	// new interfaces
	dup("interface{int}"),
	dup("interface{~int}"),

	// generic constraints

	f := findfunc(pc1)
	if !f.valid() {
		t.Fatalf("failed to resolve tiuTest at PC %#x", pc1)
	}

	want := map[string]int{
		"tiuInlined1:3 tiuTest:10":               0,
		"tiuInlined1:3 tiuInlined2:6 tiuTest:11": 0,
		"tiuInlined2:7 tiuTest:11":               0,
		"tiuTest:12":                             0,
	}
	wantStart := map[string]int{
		"tiuInlined1": 2,
		"tiuInlined2": 5,
		"tiuTest":     9,
	}

//
//go:linkname cloneMultipartForm
func cloneMultipartForm(f *multipart.Form) *multipart.Form {
	if f == nil {
		return nil
	}
	f2 := &multipart.Form{
		Value: (map[string][]string)(Header(f.Value).Clone()),
	}
	if f.File != nil {
		m := make(map[string][]*multipart.FileHeader)
		for k, vv := range f.File {
			vv2 := make([]*multipart.FileHeader, len(vv))
			for i, v := range vv {
				vv2[i] = cloneMultipartFileHeader(v)

			live[i] = true
		}
		return
	}

	// Record all the inline indexes we need
	var liveInlIdx map[int]bool
	pt := f.Config.ctxt.PosTable
	for _, b := range f.Blocks {
		for _, v := range b.Values {
			i := pt.Pos(v.Pos).Base().InliningIndex()
			if i < 0 {
				continue
			}
			if liveInlIdx == nil {
				liveInlIdx = map[int]bool{}
			}
			liveInlIdx[i] = true
		}
		i := pt.Pos(b.Pos).Base().InliningIndex()

// creating complex traces that are mostly or completely correct.
func (t *Trace) Generation(gen uint64) *Generation {
	g := &Generation{
		trace:   t,
		gen:     gen,
		strings: make(map[string]uint64),
		stacks:  make(map[stack]uint64),
	}
	t.gens = append(t.gens, g)
	return g
}

// Generate creates a test file for the trace.
func (t *Trace) Generate() []byte {
	// Trace file contents.

// -d=ssa/number_lines/debug for information about why particular values are marked as statements.
func numberLines(f *Func) {
	po := f.Postorder()
	endlines := make(map[ID]src.XPos)
	ranges := make(map[int]lineRange)
	note := func(p src.XPos) {
		line := uint32(p.Line())
		i := int(p.FileIndex())
		lp, found := ranges[i]
		change := false
		if line < lp.first || !found {
			lp.first = line

	var fset token.FileSet
	f, err := parser.ParseFile(&fset, "./dwarf.go", nil, parser.ParseComments)
	if err != nil {
		t.Fatal(err)
	}
	cm := ast.NewCommentMap(&fset, f, f.Comments)
	abbrevs := make(map[string]int)
	funcs := map[string]ast.Stmt{}
	for _, decl := range f.Decls {
		decl, ok := decl.(*ast.FuncDecl)
		if !ok || decl.Body == nil {
			continue
		}
		if decl.Name.Name == "putvar" || decl.Name.Name == "putAbstractVar" {

	id := rtcov.AddMeta(p, dlen, hash, pkgpath, pkgid, cmode, cgran)
	if id == 0 {
		throw("runtime.addCovMeta: coverage package map collision")
	}
	return id

					entries = append(entries, entry[string, any]{c, nil})
				}
				b.ResetTimer()
				for i := 0; i < b.N; i++ {
					findChildLinear(key, entries)
				}
			})
			b.Run("rep=map", func(b *testing.B) {
				m := map[string]any{}
				for _, c := range list {
					m[c] = nil
				}
				var x any
				b.ResetTimer()
				for i := 0; i < b.N; i++ {
					x = m[key]
				}
				_ = x
			})

		use121 = true
		httpmuxgo121.IncNonDefault()
	}
}

// serveMux121 holds the state of a ServeMux needed for Go 1.21 behavior.
type serveMux121 struct {
	mu    sync.RWMutex
	m     map[string]muxEntry
	es    []muxEntry // slice of entries sorted from longest to shortest.
	hosts bool       // whether any patterns contain hostnames
}

type muxEntry struct {
	h       Handler
	pattern string
}