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	: Linux in-mum-web845.main-hosting.eu 4.18.0-553.40.1.lve.el8.x86_64 #1 SMP Wed Feb 12 18:54:57 UTC 2025 x86_64

: /opt/golang/1.17.2/test/

files >> //opt/golang/1.17.2/test/const2.go

 // errorcheck

// Copyright 2009 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.

// Verify that large integer constant expressions cause overflow.
// Does not compile.

package main

const (
	A int = 1
	B byte;	// ERROR "type without expr|expected .=.|missing init expr"
)

const LargeA = 1000000000000000000
const LargeB = LargeA * LargeA * LargeA
const LargeC = LargeB * LargeB * LargeB // GC_ERROR "constant multiplication overflow"

const AlsoLargeA = LargeA << 400 << 400 >> 400 >> 400 // GC_ERROR "constant shift overflow"

// Issue #42732.

const a = 1e+500000000
const b = a * a // ERROR "constant multiplication overflow|not representable"
const c = b * b

const MaxInt512 = (1<<256 - 1) * (1<<256 + 1)
const _ = MaxInt512 + 1  // ERROR "constant addition overflow"
const _ = MaxInt512 ^ -1 // ERROR "constant bitwise XOR overflow"
const _ = ^MaxInt512     // ERROR "constant bitwise complement overflow"