mirror of
https://github.com/golang/go
synced 2024-11-15 01:50:28 -07:00
139 lines
2.3 KiB
Go
139 lines
2.3 KiB
Go
// run
|
|
|
|
// 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.
|
|
|
|
// Test arrays and slices.
|
|
|
|
package main
|
|
|
|
func setpd(a []int) {
|
|
// print("setpd a=", a, " len=", len(a), " cap=", cap(a), "\n");
|
|
for i := 0; i < len(a); i++ {
|
|
a[i] = i
|
|
}
|
|
}
|
|
|
|
func sumpd(a []int) int {
|
|
// print("sumpd a=", a, " len=", len(a), " cap=", cap(a), "\n");
|
|
t := 0
|
|
for i := 0; i < len(a); i++ {
|
|
t += a[i]
|
|
}
|
|
// print("sumpd t=", t, "\n");
|
|
return t
|
|
}
|
|
|
|
func setpf(a *[20]int) {
|
|
// print("setpf a=", a, " len=", len(a), " cap=", cap(a), "\n");
|
|
for i := 0; i < len(a); i++ {
|
|
a[i] = i
|
|
}
|
|
}
|
|
|
|
func sumpf(a *[20]int) int {
|
|
// print("sumpf a=", a, " len=", len(a), " cap=", cap(a), "\n");
|
|
t := 0
|
|
for i := 0; i < len(a); i++ {
|
|
t += a[i]
|
|
}
|
|
// print("sumpf t=", t, "\n");
|
|
return t
|
|
}
|
|
|
|
func res(t int, lb, hb int) {
|
|
sb := (hb - lb) * (hb + lb - 1) / 2
|
|
if t != sb {
|
|
print("lb=", lb,
|
|
"; hb=", hb,
|
|
"; t=", t,
|
|
"; sb=", sb,
|
|
"\n")
|
|
panic("res")
|
|
}
|
|
}
|
|
|
|
// call ptr dynamic with ptr dynamic
|
|
func testpdpd() {
|
|
a := make([]int, 10, 100)
|
|
if len(a) != 10 && cap(a) != 100 {
|
|
print("len and cap from new: ", len(a), " ", cap(a), "\n")
|
|
panic("fail")
|
|
}
|
|
|
|
a = a[0:100]
|
|
setpd(a)
|
|
|
|
a = a[0:10]
|
|
res(sumpd(a), 0, 10)
|
|
|
|
a = a[5:25]
|
|
res(sumpd(a), 5, 25)
|
|
|
|
a = a[30:95]
|
|
res(sumpd(a), 35, 100)
|
|
}
|
|
|
|
// call ptr fixed with ptr fixed
|
|
func testpfpf() {
|
|
var a [20]int
|
|
|
|
setpf(&a)
|
|
res(sumpf(&a), 0, 20)
|
|
}
|
|
|
|
// call ptr dynamic with ptr fixed from new
|
|
func testpdpf1() {
|
|
a := new([40]int)
|
|
setpd(a[0:])
|
|
res(sumpd(a[0:]), 0, 40)
|
|
|
|
b := (*a)[5:30]
|
|
res(sumpd(b), 5, 30)
|
|
}
|
|
|
|
// call ptr dynamic with ptr fixed from var
|
|
func testpdpf2() {
|
|
var a [80]int
|
|
|
|
setpd(a[0:])
|
|
res(sumpd(a[0:]), 0, 80)
|
|
}
|
|
|
|
// generate bounds error with ptr dynamic
|
|
func testpdfault() {
|
|
a := make([]int, 100)
|
|
|
|
print("good\n")
|
|
for i := 0; i < 100; i++ {
|
|
a[i] = 0
|
|
}
|
|
print("should fault\n")
|
|
a[100] = 0
|
|
print("bad\n")
|
|
}
|
|
|
|
// generate bounds error with ptr fixed
|
|
func testfdfault() {
|
|
var a [80]int
|
|
|
|
print("good\n")
|
|
for i := 0; i < 80; i++ {
|
|
a[i] = 0
|
|
}
|
|
print("should fault\n")
|
|
x := 80
|
|
a[x] = 0
|
|
print("bad\n")
|
|
}
|
|
|
|
func main() {
|
|
testpdpd()
|
|
testpfpf()
|
|
testpdpf1()
|
|
testpdpf2()
|
|
// print("testpdfault\n"); testpdfault();
|
|
// print("testfdfault\n"); testfdfault();
|
|
}
|