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// Copyright 2019 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 runtime_test
import (
"bufio"
"bytes"
"fmt"
"internal/testenv"
"os/exec"
"path/filepath"
"runtime"
"strings"
"syscall"
"testing"
)
func TestVectoredHandlerExceptionInNonGoThread(t *testing.T) {
if *flagQuick {
t.Skip("-quick")
}
if strings.HasPrefix(testenv.Builder(), "windows-amd64-2012") {
testenv.SkipFlaky(t, 49681)
}
testenv.MustHaveGoBuild(t)
testenv.MustHaveCGO(t)
testenv.MustHaveExecPath(t, "gcc")
testprog.Lock()
defer testprog.Unlock()
dir := t.TempDir()
// build c program
dll := filepath.Join(dir, "veh.dll")
cmd := exec.Command("gcc", "-shared", "-o", dll, "testdata/testwinlibthrow/veh.c")
out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build c exe: %s\n%s", err, out)
}
// build go exe
exe := filepath.Join(dir, "test.exe")
cmd = exec.Command(testenv.GoToolPath(t), "build", "-o", exe, "testdata/testwinlibthrow/main.go")
out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build go library: %s\n%s", err, out)
}
// run test program in same thread
cmd = exec.Command(exe)
out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
if err == nil {
t.Fatal("error expected")
}
if _, ok := err.(*exec.ExitError); ok && len(out) > 0 {
if !bytes.Contains(out, []byte("Exception 0x2a")) {
t.Fatalf("unexpected failure while running executable: %s\n%s", err, out)
}
} else {
t.Fatalf("unexpected error while running executable: %s\n%s", err, out)
}
// run test program in a new thread
cmd = exec.Command(exe, "thread")
out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
if err == nil {
t.Fatal("error expected")
}
if err, ok := err.(*exec.ExitError); ok {
if err.ExitCode() != 42 {
t.Fatalf("unexpected failure while running executable: %s\n%s", err, out)
}
} else {
t.Fatalf("unexpected error while running executable: %s\n%s", err, out)
}
}
func TestVectoredHandlerDontCrashOnLibrary(t *testing.T) {
if *flagQuick {
t.Skip("-quick")
}
if runtime.GOARCH == "arm" {
//TODO: remove this skip and update testwinlib/main.c
// once windows/arm supports c-shared buildmode.
// See go.dev/issues/43800.
t.Skip("this test can't run on windows/arm")
}
testenv.MustHaveGoBuild(t)
testenv.MustHaveCGO(t)
testenv.MustHaveExecPath(t, "gcc")
testprog.Lock()
defer testprog.Unlock()
dir := t.TempDir()
// build go dll
dll := filepath.Join(dir, "testwinlib.dll")
cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", dll, "-buildmode", "c-shared", "testdata/testwinlib/main.go")
out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build go library: %s\n%s", err, out)
}
// build c program
exe := filepath.Join(dir, "test.exe")
cmd = exec.Command("gcc", "-L"+dir, "-I"+dir, "-ltestwinlib", "-o", exe, "testdata/testwinlib/main.c")
out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build c exe: %s\n%s", err, out)
}
// run test program
cmd = exec.Command(exe)
out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failure while running executable: %s\n%s", err, out)
}
expectedOutput := "exceptionCount: 1\ncontinueCount: 1\n"
// cleaning output
cleanedOut := strings.ReplaceAll(string(out), "\r\n", "\n")
if cleanedOut != expectedOutput {
t.Errorf("expected output %q, got %q", expectedOutput, cleanedOut)
}
}
func sendCtrlBreak(pid int) error {
kernel32, err := syscall.LoadDLL("kernel32.dll")
if err != nil {
return fmt.Errorf("LoadDLL: %v\n", err)
}
generateEvent, err := kernel32.FindProc("GenerateConsoleCtrlEvent")
if err != nil {
return fmt.Errorf("FindProc: %v\n", err)
}
result, _, err := generateEvent.Call(syscall.CTRL_BREAK_EVENT, uintptr(pid))
if result == 0 {
return fmt.Errorf("GenerateConsoleCtrlEvent: %v\n", err)
}
return nil
}
// TestCtrlHandler tests that Go can gracefully handle closing the console window.
// See https://golang.org/issues/41884.
func TestCtrlHandler(t *testing.T) {
testenv.MustHaveGoBuild(t)
t.Parallel()
// build go program
exe := filepath.Join(t.TempDir(), "test.exe")
cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", exe, "testdata/testwinsignal/main.go")
out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build go exe: %v\n%s", err, out)
}
// run test program
cmd = exec.Command(exe)
var stdout strings.Builder
var stderr strings.Builder
cmd.Stdout = &stdout
cmd.Stderr = &stderr
inPipe, err := cmd.StdinPipe()
if err != nil {
t.Fatalf("Failed to create stdin pipe: %v", err)
}
// keep inPipe alive until the end of the test
defer inPipe.Close()
// in a new command window
const _CREATE_NEW_CONSOLE = 0x00000010
cmd.SysProcAttr = &syscall.SysProcAttr{
CreationFlags: _CREATE_NEW_CONSOLE,
HideWindow: true,
}
if err := cmd.Start(); err != nil {
t.Fatalf("Start failed: %v", err)
}
defer func() {
cmd.Process.Kill()
cmd.Wait()
}()
// check child exited gracefully, did not timeout
if err := cmd.Wait(); err != nil {
t.Fatalf("Program exited with error: %v\n%s", err, &stderr)
}
// check child received, handled SIGTERM
if expected, got := syscall.SIGTERM.String(), strings.TrimSpace(stdout.String()); expected != got {
t.Fatalf("Expected '%s' got: %s", expected, got)
}
}
// TestLibraryCtrlHandler tests that Go DLL allows calling program to handle console control events.
// See https://golang.org/issues/35965.
func TestLibraryCtrlHandler(t *testing.T) {
if *flagQuick {
t.Skip("-quick")
}
if runtime.GOARCH != "amd64" {
t.Skip("this test can only run on windows/amd64")
}
testenv.MustHaveGoBuild(t)
testenv.MustHaveCGO(t)
testenv.MustHaveExecPath(t, "gcc")
testprog.Lock()
defer testprog.Unlock()
dir := t.TempDir()
// build go dll
dll := filepath.Join(dir, "dummy.dll")
cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", dll, "-buildmode", "c-shared", "testdata/testwinlibsignal/dummy.go")
out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build go library: %s\n%s", err, out)
}
// build c program
exe := filepath.Join(dir, "test.exe")
cmd = exec.Command("gcc", "-o", exe, "testdata/testwinlibsignal/main.c")
out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
t.Fatalf("failed to build c exe: %s\n%s", err, out)
}
// run test program
cmd = exec.Command(exe)
var stderr bytes.Buffer
cmd.Stderr = &stderr
outPipe, err := cmd.StdoutPipe()
if err != nil {
t.Fatalf("Failed to create stdout pipe: %v", err)
}
outReader := bufio.NewReader(outPipe)
cmd.SysProcAttr = &syscall.SysProcAttr{
CreationFlags: syscall.CREATE_NEW_PROCESS_GROUP,
}
if err := cmd.Start(); err != nil {
t.Fatalf("Start failed: %v", err)
}
errCh := make(chan error, 1)
go func() {
if line, err := outReader.ReadString('\n'); err != nil {
errCh <- fmt.Errorf("could not read stdout: %v", err)
} else if strings.TrimSpace(line) != "ready" {
errCh <- fmt.Errorf("unexpected message: %v", line)
} else {
errCh <- sendCtrlBreak(cmd.Process.Pid)
}
}()
if err := <-errCh; err != nil {
t.Fatal(err)
}
if err := cmd.Wait(); err != nil {
t.Fatalf("Program exited with error: %v\n%s", err, &stderr)
}
}