default:
		log.Printf("unknown setting -spectre=%s", *flags.Spectre)
		os.Exit(2)
	case "":
		// nothing
	case "index":
		// known to compiler; ignore here so people can use
		// the same list with -gcflags=-spectre=LIST and -asmflags=-spectrre=LIST
	case "all", "ret":
		ctxt.Retpoline = true
	}

	ctxt.Bso = bufio.NewWriter(os.Stdout)
	defer ctxt.Bso.Flush()

	architecture.Init(ctxt)

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

//go:build cgo && !netgo && unix && !darwin

package net

/*
#define _GNU_SOURCE 1

#cgo CFLAGS: -fno-stack-protector
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>

#ifndef EAI_NODATA

`reflect.TypeFor` function (introduced in go1.22) from a file in a
module whose go.mod file specifies `go 1.21`.

### Cgo {#cgo}

<!-- go.dev/issue/66456 -->
[cmd/cgo] supports the new `-ldflags` flag for passing flags to the C linker.
The `go` command uses it automatically, avoiding "argument list too long"
errors with a very large `CGO_LDFLAGS`.

### Trace {#trace}

<!-- go.dev/issue/65316 -->

	if movbp.Link.Pc > math.MaxUint8 {
		// SEH unwind information don't support prologues that are more than 255 bytes long.
		// These are very rare, but still possible, e.g., when compiling functions with many
		// parameters with -gcflags=-d=maymorestack=runtime.mayMoreStackPreempt.
		// Return without reporting an error.
		return
	}

	// Reference:
	// https://learn.microsoft.com/en-us/cpp/build/exception-handling-x64#struct-unwind_info

	const (

	t.Logf("Test without PGO:\n%s", b)
	if err != nil {
		t.Fatalf("Test failed without PGO: %v", err)
	}

	// Build the test with the profile.
	pprof := filepath.Join(dir, pgoProfileName)
	gcflag := fmt.Sprintf("-gcflags=-m=2 -pgoprofile=%s -d=pgodebug=3", pprof)
	out := filepath.Join(dir, "test.exe")
	cmd = testenv.CleanCmdEnv(testenv.Command(t, testenv.GoToolPath(t), "test", "-o", out, gcflag, "."))
	cmd.Dir = dir

	pr, pw, err := os.Pipe()

// which is the comment on import "C".
func extractCgoDirectives(doc string) []string {
	var out []string
	for _, line := range strings.Split(doc, "\n") {
		// Line is
		//	#cgo [GOOS/GOARCH...] LDFLAGS: stuff
		//
		line = strings.TrimSpace(line)
		if len(line) < 5 || line[:4] != "#cgo" || (line[4] != ' ' && line[4] != '\t') {
			continue
		}

		out = append(out, line)
	}
	return out

func TestDisasmExtld(t *testing.T) {
	testenv.MustHaveCGO(t)
	switch runtime.GOOS {
	case "plan9":
		t.Skipf("skipping on %s", runtime.GOOS)
	}
	t.Parallel()
	testDisasm(t, "fmthello.go", false, false, "-ldflags=-linkmode=external")
}

func TestDisasmPIE(t *testing.T) {
	if !platform.BuildModeSupported("gc", "pie", runtime.GOOS, runtime.GOARCH) {