go/test/fixedbugs/issue4085b.go
Clément Chigot 041526c6ef runtime: handle 64bits addresses for AIX
This commit allows the runtime to handle 64bits addresses returned by
mmap syscall on AIX.

Mmap syscall returns addresses on 59bits on AIX. But the Arena
implementation only allows addresses with less than 48 bits.
This commit increases the arena size up to 1<<60 for aix/ppc64.

Update: #25893

Change-Id: Iea72e8a944d10d4f00be915785e33ae82dd6329e
Reviewed-on: https://go-review.googlesource.com/c/138736
Reviewed-by: Austin Clements <austin@google.com>
2018-11-26 14:06:28 +00:00

61 lines
1.8 KiB
Go

// run
// Copyright 2013 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 (
"strings"
"unsafe"
)
type T []int
func main() {
n := -1
shouldPanic("len out of range", func() { _ = make(T, n) })
shouldPanic("cap out of range", func() { _ = make(T, 0, n) })
shouldPanic("len out of range", func() { _ = make(T, int64(n)) })
shouldPanic("cap out of range", func() { _ = make(T, 0, int64(n)) })
var t *byte
if unsafe.Sizeof(t) == 8 {
// Test mem > maxAlloc
var n2 int64 = 1 << 59
shouldPanic("len out of range", func() { _ = make(T, int(n2)) })
shouldPanic("cap out of range", func() { _ = make(T, 0, int(n2)) })
// Test elem.size*cap overflow
n2 = 1<<63 - 1
shouldPanic("len out of range", func() { _ = make(T, int(n2)) })
shouldPanic("cap out of range", func() { _ = make(T, 0, int(n2)) })
} else {
n = 1<<31 - 1
shouldPanic("len out of range", func() { _ = make(T, n) })
shouldPanic("cap out of range", func() { _ = make(T, 0, n) })
shouldPanic("len out of range", func() { _ = make(T, int64(n)) })
shouldPanic("cap out of range", func() { _ = make(T, 0, int64(n)) })
}
// Test make in append panics since the gc compiler optimizes makes in appends.
shouldPanic("len out of range", func() { _ = append(T{}, make(T, n)...) })
shouldPanic("cap out of range", func() { _ = append(T{}, make(T, 0, n)...) })
shouldPanic("len out of range", func() { _ = append(T{}, make(T, int64(n))...) })
shouldPanic("cap out of range", func() { _ = append(T{}, make(T, 0, int64(n))...) })
}
func shouldPanic(str string, f func()) {
defer func() {
err := recover()
if err == nil {
panic("did not panic")
}
s := err.(error).Error()
if !strings.Contains(s, str) {
panic("got panic " + s + ", want " + str)
}
}()
f()
}