mirror of
https://github.com/golang/go
synced 2024-11-13 15:40:20 -07:00
fc0dc04095
Very few of the compiler regression tests include a comment saying waht they do. Many are obvious, some are anything but. I've started with a-c in the top directory. More will follow once we agree on the approach, correctness, and thoroughness here. zerodivide.go sneaked in too. R=rsc, r CC=golang-dev https://golang.org/cl/5656100
22 lines
599 B
Go
22 lines
599 B
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 .=."
|
|
)
|
|
|
|
const LargeA = 1000000000000000000
|
|
const LargeB = LargeA * LargeA * LargeA
|
|
const LargeC = LargeB * LargeB * LargeB // ERROR "constant multiplication overflow"
|
|
|
|
const AlsoLargeA = LargeA << 400 << 400 >> 400 >> 400 // ERROR "constant shift overflow"
|