mirror of
https://github.com/golang/go
synced 2024-11-23 06:30:06 -07:00
2acd3646fc
Induction variable detection is still not quite right. I've added another failing test. Redo the overflow/underflow detector so it is more obviously correct. Update #53600 Fixes #53653 Fixes #53663 Change-Id: Id95228e282fdbf6bd80b26e1c41d62e935ba08ff Reviewed-on: https://go-review.googlesource.com/c/go/+/415874 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> Reviewed-by: David Chase <drchase@google.com>
54 lines
802 B
Go
54 lines
802 B
Go
// run
|
|
|
|
// Copyright 2022 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.
|
|
|
|
package main
|
|
|
|
import "math"
|
|
|
|
func main() {
|
|
f()
|
|
g()
|
|
h()
|
|
j(math.MinInt64)
|
|
}
|
|
func f() {
|
|
for i := int64(math.MaxInt64); i <= math.MaxInt64; i++ {
|
|
if i < 0 {
|
|
println("done")
|
|
return
|
|
}
|
|
println(i, i < 0)
|
|
}
|
|
}
|
|
func g() {
|
|
for i := int64(math.MaxInt64) - 1; i <= math.MaxInt64; i++ {
|
|
if i < 0 {
|
|
println("done")
|
|
return
|
|
}
|
|
println(i, i < 0)
|
|
}
|
|
}
|
|
func h() {
|
|
for i := int64(math.MaxInt64) - 2; i <= math.MaxInt64; i += 2 {
|
|
if i < 0 {
|
|
println("done")
|
|
return
|
|
}
|
|
println(i, i < 0)
|
|
}
|
|
}
|
|
|
|
//go:noinline
|
|
func j(i int64) {
|
|
for j := int64(math.MaxInt64); j <= i-1; j++ {
|
|
if j < 0 {
|
|
break
|
|
}
|
|
println(j)
|
|
}
|
|
}
|