// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package p

import "io"

type A interface {
        io.Reader
}

func f(a A) {
        a.Read(nil)

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix

package unix

import "syscall"

func IsNonblock(fd int) (nonblocking bool, err error) {
	flag, e1 := Fcntl(fd, syscall.F_GETFL, 0)
	if e1 != nil {
		return false, e1
	}
	return flag&syscall.O_NONBLOCK != 0, nil
}

func HasNonblockFlag(flag int) bool {

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package issue26743

// typedef unsigned int uint;
// int C1(uint x) { return x; }
import "C"

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !386 && !amd64 && !amd64p32 && !arm64

package cpu

func archInit() {
	if err := readHWCAP(); err != nil {
		return
	}
	doinit()
	Initialized = true

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build (!arm64 && !s390x && !ppc64le) || !gc || purego

package chacha20

const bufSize = blockSize

func (s *Cipher) xorKeyStreamBlocks(dst, src []byte) {
	s.xorKeyStreamBlocksGeneric(dst, src)

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// See memclrNoHeapPointers Go doc for important implementation constraints.

// func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr)
TEXT runtime·memclrNoHeapPointers(SB), NOSPLIT, $0-16
	MOVD ptr+0(FP), R0
	MOVD n+8(FP), R1

	Get R0
	I32WrapI64

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package unix

import "syscall"

const unlinkatTrap uintptr = syscall.SYS_UNLINKAT
const openatTrap uintptr = syscall.SYS_OPENAT

const (
	AT_EACCESS          = 0x200
	AT_FDCWD            = -0x64
	AT_REMOVEDIR        = 0x200
	AT_SYMLINK_NOFOLLOW = 0x100

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build darwin

package issue24161arg

/*
#cgo LDFLAGS: -framework CoreFoundation
#include <CoreFoundation/CoreFoundation.h>
*/
import "C"
import "testing"

func Test(t *testing.T) {
	a := test24161array()
	C.CFArrayCreateCopy(0, a)

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build cgo

// Issue 26430: incomplete typedef leads to inconsistent typedefs error.
// No runtime test; just make sure it compiles.

package cgotest

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos

package unix

import "syscall"

type Signal = syscall.Signal
type Errno = syscall.Errno