go/test/recover2.go
Russ Cox 88ce9ce40c runtime: two proc bug fixes
1. Fix bug in GOMAXPROCS when trying to cut number of procs
Race could happen on any system but was
manifesting only on Xen hosted Linux.

2. Fix recover on ARM, where FP != caller SP.

R=r
CC=golang-dev
https://golang.org/cl/880043
2010-04-06 13:48:31 -07:00

92 lines
1.3 KiB
Go

// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2010 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 of recover for run-time errors.
// TODO(rsc):
// integer divide by zero?
// null pointer accesses
package main
import (
"os"
"strings"
"syscall"
)
var x = make([]byte, 10)
func main() {
test1()
test2()
test3()
test4()
test5()
test6()
test7()
}
func mustRecover(s string) {
v := recover()
if v == nil {
panic("expected panic")
}
if e := v.(os.Error).String(); strings.Index(e, s) < 0 {
panic("want: " + s + "; have: " + e)
}
}
func test1() {
defer mustRecover("index")
println(x[123])
}
func test2() {
defer mustRecover("slice")
println(x[5:15])
}
func test3() {
defer mustRecover("slice")
println(x[11:9])
}
func test4() {
defer mustRecover("interface")
var x interface{} = 1
println(x.(float))
}
type T struct {
a, b int
}
func test5() {
defer mustRecover("uncomparable")
var x T
var z interface{} = x
println(z != z)
}
func test6() {
defer mustRecover("unhashable")
var x T
var z interface{} = x
m := make(map[interface{}]int)
m[z] = 1
}
func test7() {
if syscall.ARCH == "arm" {
// ARM doesn't have floating point yet
return
}
defer mustRecover("complex divide by zero")
var x, y complex
println(x / y)
}