You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: issue23188.go
    path of file: ./repos/gccrs/gcc/testsuite/go.test/test/fixedbugs
    
    the code of the file until where you have to start completion: // run

// 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.

// Test order of evaluation of index operations.

package main

func main() {
	arr := []int{1, 2}

	// The spec says that in an assignment statement the operands
	// of all index expressions and pointer indirections on the
	// left, and the expressions on the right, are evaluated in
	// the usual order. The usu
    
func main() {
	arr := []int{1, 2}

	// The spec says that in an assignment statement the operands
	// of all index expressions and pointer indirections on the
	// left, and the expressions on the right, are evaluated in
	// the usual order. The usual order means function calls and
	// channel operations are done first. Then the assignments are
	// carried out one at a time. The operands of an index
	// expression include both the array and the index. So this
	// evaluates as
	//   tmp1 := arr
	//   tmp2 := len(arr) - 1
	//   tmp3 := len(arr)
	//   arr = arr[:tmp3-1]
	//   tmp1[tmp2] = 3
	arr, arr[len(arr)-1] = arr[:len(arr)-1], 3

	if len(arr) != 1 || arr[0] != 1 || arr[:2][1] != 3 {
		panic(arr)
	}
}