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go/test/fixedbugs/issue4251.go
Ian Lance Taylor 08918ba438 gc: avoid meaningless constant overflow error for inverted slice range
Used to say:

issue4251.go:12: inverted slice range
issue4251.go:12: constant -1 overflows uint64
issue4251.go:16: inverted slice range
issue4251.go:16: constant -1 overflows uint64
issue4251.go:20: inverted slice range
issue4251.go:20: constant -1 overflows uint64

With this patch, only gives the "inverted slice range" errors.

R=golang-dev, daniel.morsing
CC=golang-dev
https://golang.org/cl/6871058
2012-12-05 15:46:45 -08:00

22 lines
441 B
Go

// errorcheck
// Copyright 2012 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.
// Issue 4251: slice with inverted range is an error.
package p
func F1(s []byte) []byte {
return s[2:1] // ERROR "inverted"
}
func F2(a [10]byte) []byte {
return a[2:1] // ERROR "inverted"
}
func F3(s string) string {
return s[2:1] // ERROR "inverted"
}