var (
	doDiff    = flag.Bool("diff", false, "display diffs instead of rewriting files")
	goVersion = flag.String("go", "", "go language version for files")
)

// enable for debugging fix failures
const debug = false // display incorrectly reformatted source and exit

func usage() {
	fmt.Fprintf(os.Stderr, "usage: go tool fix [-diff] [-r fixname,...] [-force fixname,...] [path ...]\n")
	flag.PrintDefaults()

// alternative behavior is to hang.
func (p XPos) WithBogusLine() XPos {
	if p.index == 0 {
		// See #35652
		panic("Assigning a bogus line to XPos with no file will cause mysterious downstream failures.")
	}
	p.lico = makeBogusLico()
	return p
}

// WithXlogue returns the same location but marked with DWARF function prologue/epilogue
func (p XPos) WithXlogue(x PosXlogue) XPos {
	p.lico = p.lico.withXlogue(x)

	var medium bytes.Buffer
	enc := gob.NewEncoder(&medium)
	dec := gob.NewDecoder(&medium)
	for _, test := range encodingTests {
		medium.Reset() // empty buffer for each test case (in case of failures)
		var tx Rat
		tx.SetString(test + ".14159265")
		if err := enc.Encode(&tx); err != nil {
			t.Errorf("encoding of %s failed: %s", &tx, err)
			continue
		}
		var rx Rat
		if err := dec.Decode(&rx); err != nil {

	if err != nil {
		t.Fatalf("error running profile collection: %v\noutput: %s", err, out)
	}

	// Log the binary output for debugging failures.
	b64 := make([]byte, base64.StdEncoding.EncodedLen(len(out)))
	base64.StdEncoding.Encode(b64, out)
	t.Logf("Output in base64.StdEncoding: %s", b64)

	p, err := profile.Parse(bytes.NewReader(out))
	if err != nil {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test that devirtualization doesn't introduce spurious type
// assertion failures due to shaped and non-shaped interfaces having
// distinct itabs.

package main

func main() {
	F[int]()
}

func F[T any]() {
	var i I[T] = X(0)
	i.M()
}

type I[T any] interface{ M() }

	} else {
		if cfg.BuildV {
			fmt.Printf("failed to run gdb --version: %v\n", err)
		}
	}
}

// printCmdOut prints the output of running the given command.
// It ignores failures; 'go bug' is best effort.
func printCmdOut(w io.Writer, prefix, path string, args ...string) {
	cmd := exec.Command(path, args...)
	out, err := cmd.Output()
	if err != nil {
		if cfg.BuildV {

// license that can be found in the LICENSE file.

package syscall

import (
	"internal/syscall/windows/sysdll"
	"sync"
	"sync/atomic"
	"unsafe"
)

// DLLError describes reasons for DLL load failures.
type DLLError struct {
	Err     error
	ObjName string
	Msg     string
}

func (e *DLLError) Error() string { return e.Msg }

func (e *DLLError) Unwrap() error { return e.Err }

				for _, mode := range []RoundingMode{ToNearestEven, ToNearestAway, ToZero, AwayFromZero, ToNegativeInf, ToPositiveInf} {
					medium.Reset() // empty buffer for each test case (in case of failures)
					x := sign + test

					var tx Float
					_, _, err := tx.SetPrec(prec).SetMode(mode).Parse(x, 0)
					if err != nil {
						t.Errorf("parsing of %s (%dbits, %v) failed (invalid test case): %v", x, prec, mode, err)