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

// Test various parsing cases that are a little
// different now that send is a statement, not an expression.

package main

func main() {
	chanchan()
	sendprec()
}

func chanchan() {
	cc := make(chan chan int, 1)
	c := make(chan int, 1)
	cc <- c
	select {
	case <-cc <- 2:
	default:
		panic("nonblock")
	}
	if <-c != 2 {
		panic("bad receive")
	}
}

	"errors"
	"internal/byteorder"
	"internal/chacha8rand"
)

// A ChaCha8 is a ChaCha8-based cryptographically strong
// random number generator.
type ChaCha8 struct {
	state chacha8rand.State

	// The last readLen bytes of readBuf are still to be consumed by Read.
	readBuf [8]byte
	readLen int // 0 <= readLen <= 8
}

// NewChaCha8 returns a new ChaCha8 seeded with the given seed.
func NewChaCha8(seed [32]byte) *ChaCha8 {

	data := make([]byte, 6*8)
	copy(data, "chacha8:")
	used := (s.c/ctrInc)*chunk + s.i
	byteorder.BePutUint64(data[1*8:], uint64(used))
	for i, seed := range s.seed {
		byteorder.LePutUint64(data[(2+i)*8:], seed)
	}
	return data
}

type errUnmarshalChaCha8 struct{}

func (*errUnmarshalChaCha8) Error() string {
	return "invalid ChaCha8 encoding"
}

// Copyright 2023 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.

// ChaCha8 is ChaCha with 8 rounds.
// See https://cr.yp.to/chacha/chacha-20080128.pdf.
//
// ChaCha8 operates on a 4x4 matrix of uint32 values, initially set to:
//
//	const1 const2 const3 const4
//	seed   seed   seed   seed
//	seed   seed   seed   seed
//	counter64     0      0
//

// Copyright 2023 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"

// ChaCha8 is ChaCha with 8 rounds.
// See https://cr.yp.to/chacha/chacha-20080128.pdf.
// See chacha8_generic.go for additional details.

// ROL rotates the uint32s in register R left by N bits, using temporary T.
#define ROL(N, R, T) \

	"chacha8:\x00\x00\x00\x00\x00\x00\x00\x06ABCDEFGHIJKLMNOPQRSTUVWXYZ123456",
	"chacha8:\x00\x00\x00\x00\x00\x00\x00\aABCDEFGHIJKLMNOPQRSTUVWXYZ123456",
	"chacha8:\x00\x00\x00\x00\x00\x00\x00\bABCDEFGHIJKLMNOPQRSTUVWXYZ123456",
	"chacha8:\x00\x00\x00\x00\x00\x00\x00\tABCDEFGHIJKLMNOPQRSTUVWXYZ123456",
	"chacha8:\x00\x00\x00\x00\x00\x00\x00\nABCDEFGHIJKLMNOPQRSTUVWXYZ123456",

Clément Chigot <******@****.***> 1538380720 +0200

	cmd.Stderr = &output
	if err := cmd.Start(); err != nil {
		return nil, nil, err
	}

	connChan := make(chan any, 1)
	go func() {
		tcpConn, err := l.Accept()
		if err != nil {
			connChan <- err
			return
		}
		connChan <- tcpConn
	}()

	var tcpConn net.Conn
	select {
	case connOrError := <-connChan:
		if err, ok := connOrError.(error); ok {
			return nil, nil, err
		}

	VADD A.S4, B.S4, A.S4; VEOR D.B16, A.B16, D.B16;   VTBL V31.B16, [D.B16], D.B16; \
	VADD C.S4, D.S4, C.S4; VEOR B.B16, C.B16, V30.B16; VSHL  $7, V30.S4, B.S4; VSRI $25, V30.S4, B.S4

// block runs 4 ChaCha8 block transformations in the four stripes of the V registers.

// func block(seed *[8]uint32, blocks *[4][16]uint32, counter uint32)
TEXT ·block<ABIInternal>(SB), NOSPLIT, $16
	// seed in R0
	// blocks in R1

				c <- i
			}
			if len(c) != chanCap || cap(c) != chanCap {
				t.Fatalf("chan[%d]: bad len/cap, expect %v/%v, got %v/%v", chanCap, chanCap, chanCap, len(c), cap(c))
			}
		}

	}
}

func TestNonblockRecvRace(t *testing.T) {
	n := 10000
	if testing.Short() {
		n = 100
	}
	for i := 0; i < n; i++ {
		c := make(chan int, 1)
		c <- 1
		go func() {
			select {