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d568e6e075
This test has been failing since the builder was updated to NetBSD 9. While the issue is under investigation, skip the test so that we do not miss other breakage. Update issue #45026 Change-Id: Id083901c517f3f88e6b4bc2b51208f65170d47a6 Reviewed-on: https://go-review.googlesource.com/c/go/+/335909 Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Keith Randall <khr@golang.org> Trust: Benny Siegert <bsiegert@gmail.com> Run-TryBot: Benny Siegert <bsiegert@gmail.com> TryBot-Result: Go Bot <gobot@golang.org>
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd
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// +build aix darwin dragonfly freebsd linux netbsd openbsd
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// TODO: test on Windows?
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package debug_test
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import (
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"runtime"
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"runtime/debug"
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"syscall"
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"testing"
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"unsafe"
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)
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func TestPanicOnFault(t *testing.T) {
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if runtime.GOARCH == "s390x" {
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t.Skip("s390x fault addresses are missing the low order bits")
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}
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if runtime.GOOS == "ios" {
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t.Skip("iOS doesn't provide fault addresses")
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}
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if runtime.GOOS == "netbsd" && runtime.GOARCH == "arm" {
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t.Skip("netbsd-arm doesn't provide fault address (golang.org/issue/45026)")
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}
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m, err := syscall.Mmap(-1, 0, 0x1000, syscall.PROT_READ /* Note: no PROT_WRITE */, syscall.MAP_SHARED|syscall.MAP_ANON)
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if err != nil {
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t.Fatalf("can't map anonymous memory: %s", err)
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}
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defer syscall.Munmap(m)
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old := debug.SetPanicOnFault(true)
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defer debug.SetPanicOnFault(old)
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const lowBits = 0x3e7
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defer func() {
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r := recover()
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if r == nil {
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t.Fatalf("write did not fault")
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}
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type addressable interface {
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Addr() uintptr
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}
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a, ok := r.(addressable)
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if !ok {
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t.Fatalf("fault does not contain address")
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}
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want := uintptr(unsafe.Pointer(&m[lowBits]))
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got := a.Addr()
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if got != want {
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t.Fatalf("fault address %x, want %x", got, want)
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}
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}()
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m[lowBits] = 1 // will fault
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}
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