| // Copyright 2016 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 carchive_test |
| |
| import ( |
| "bufio" |
| "debug/elf" |
| "fmt" |
| "io/ioutil" |
| "os" |
| "os/exec" |
| "path/filepath" |
| "runtime" |
| "strings" |
| "syscall" |
| "testing" |
| "time" |
| "unicode" |
| ) |
| |
| // Program to run. |
| var bin []string |
| |
| // C compiler with args (from $(go env CC) $(go env GOGCCFLAGS)). |
| var cc []string |
| |
| // An environment with GOPATH=$(pwd). |
| var gopathEnv []string |
| |
| // ".exe" on Windows. |
| var exeSuffix string |
| |
| var GOOS, GOARCH string |
| var libgodir string |
| |
| func init() { |
| GOOS = goEnv("GOOS") |
| GOARCH = goEnv("GOARCH") |
| bin = cmdToRun("./testp") |
| |
| ccOut := goEnv("CC") |
| cc = []string{string(ccOut)} |
| |
| out := goEnv("GOGCCFLAGS") |
| quote := '\000' |
| start := 0 |
| lastSpace := true |
| backslash := false |
| s := string(out) |
| for i, c := range s { |
| if quote == '\000' && unicode.IsSpace(c) { |
| if !lastSpace { |
| cc = append(cc, s[start:i]) |
| lastSpace = true |
| } |
| } else { |
| if lastSpace { |
| start = i |
| lastSpace = false |
| } |
| if quote == '\000' && !backslash && (c == '"' || c == '\'') { |
| quote = c |
| backslash = false |
| } else if !backslash && quote == c { |
| quote = '\000' |
| } else if (quote == '\000' || quote == '"') && !backslash && c == '\\' { |
| backslash = true |
| } else { |
| backslash = false |
| } |
| } |
| } |
| if !lastSpace { |
| cc = append(cc, s[start:]) |
| } |
| |
| if GOOS == "darwin" { |
| // For Darwin/ARM. |
| // TODO(crawshaw): can we do better? |
| cc = append(cc, []string{"-framework", "CoreFoundation", "-framework", "Foundation"}...) |
| } |
| libgodir = GOOS + "_" + GOARCH |
| if runtime.Compiler == "gccgo" { |
| libgodir = "gccgo_" + libgodir + "_fPIC" |
| } else { |
| switch GOOS { |
| case "darwin": |
| if GOARCH == "arm" || GOARCH == "arm64" { |
| libgodir += "_shared" |
| } |
| case "dragonfly", "freebsd", "linux", "netbsd", "openbsd", "solaris": |
| libgodir += "_shared" |
| } |
| } |
| cc = append(cc, "-I", filepath.Join("pkg", libgodir)) |
| |
| // Build an environment with GOPATH=$(pwd) |
| env := os.Environ() |
| var n []string |
| for _, e := range env { |
| if !strings.HasPrefix(e, "GOPATH=") { |
| n = append(n, e) |
| } |
| } |
| dir, err := os.Getwd() |
| if err != nil { |
| fmt.Fprintln(os.Stderr, err) |
| os.Exit(2) |
| } |
| n = append(n, "GOPATH="+dir) |
| gopathEnv = n |
| |
| if GOOS == "windows" { |
| exeSuffix = ".exe" |
| } |
| } |
| |
| func goEnv(key string) string { |
| out, err := exec.Command("go", "env", key).Output() |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "go env %s failed:\n%s", key, err) |
| fmt.Fprintf(os.Stderr, "%s", err.(*exec.ExitError).Stderr) |
| os.Exit(2) |
| } |
| return strings.TrimSpace(string(out)) |
| } |
| |
| func cmdToRun(name string) []string { |
| execScript := "go_" + goEnv("GOOS") + "_" + goEnv("GOARCH") + "_exec" |
| executor, err := exec.LookPath(execScript) |
| if err != nil { |
| return []string{name} |
| } |
| return []string{executor, name} |
| } |
| |
| func testInstall(t *testing.T, exe, libgoa, libgoh string, buildcmd ...string) { |
| cmd := exec.Command(buildcmd[0], buildcmd[1:]...) |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| defer func() { |
| os.Remove(libgoa) |
| os.Remove(libgoh) |
| }() |
| |
| ccArgs := append(cc, "-o", exe, "main.c") |
| if GOOS == "windows" { |
| ccArgs = append(ccArgs, "main_windows.c", libgoa, "-lntdll", "-lws2_32", "-lwinmm") |
| } else { |
| ccArgs = append(ccArgs, "main_unix.c", libgoa) |
| } |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| t.Log(ccArgs) |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| defer os.Remove(exe) |
| |
| binArgs := append(cmdToRun(exe), "arg1", "arg2") |
| cmd = exec.Command(binArgs[0], binArgs[1:]...) |
| if runtime.Compiler == "gccgo" { |
| cmd.Env = append(os.Environ(), "GCCGO=1") |
| } |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| } |
| |
| func TestInstall(t *testing.T) { |
| defer os.RemoveAll("pkg") |
| |
| libgoa := "libgo.a" |
| if runtime.Compiler == "gccgo" { |
| libgoa = "liblibgo.a" |
| } |
| |
| testInstall(t, "./testp1"+exeSuffix, |
| filepath.Join("pkg", libgodir, libgoa), |
| filepath.Join("pkg", libgodir, "libgo.h"), |
| "go", "install", "-buildmode=c-archive", "libgo") |
| |
| // Test building libgo other than installing it. |
| // Header files are now present. |
| testInstall(t, "./testp2"+exeSuffix, "libgo.a", "libgo.h", |
| "go", "build", "-buildmode=c-archive", filepath.Join("src", "libgo", "libgo.go")) |
| |
| testInstall(t, "./testp3"+exeSuffix, "libgo.a", "libgo.h", |
| "go", "build", "-buildmode=c-archive", "-o", "libgo.a", "libgo") |
| } |
| |
| func TestEarlySignalHandler(t *testing.T) { |
| switch GOOS { |
| case "darwin": |
| switch GOARCH { |
| case "arm", "arm64": |
| t.Skipf("skipping on %s/%s; see https://golang.org/issue/13701", GOOS, GOARCH) |
| } |
| case "windows": |
| t.Skip("skipping signal test on Windows") |
| } |
| |
| defer func() { |
| os.Remove("libgo2.a") |
| os.Remove("libgo2.h") |
| os.Remove("testp") |
| os.RemoveAll("pkg") |
| }() |
| |
| cmd := exec.Command("go", "build", "-buildmode=c-archive", "-o", "libgo2.a", "libgo2") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| ccArgs := append(cc, "-o", "testp"+exeSuffix, "main2.c", "libgo2.a") |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| if out, err := exec.Command(bin[0], bin[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| } |
| |
| func TestSignalForwarding(t *testing.T) { |
| switch GOOS { |
| case "darwin": |
| switch GOARCH { |
| case "arm", "arm64": |
| t.Skipf("skipping on %s/%s; see https://golang.org/issue/13701", GOOS, GOARCH) |
| } |
| case "windows": |
| t.Skip("skipping signal test on Windows") |
| } |
| |
| defer func() { |
| os.Remove("libgo2.a") |
| os.Remove("libgo2.h") |
| os.Remove("testp") |
| os.RemoveAll("pkg") |
| }() |
| |
| cmd := exec.Command("go", "build", "-buildmode=c-archive", "-o", "libgo2.a", "libgo2") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| ccArgs := append(cc, "-o", "testp"+exeSuffix, "main5.c", "libgo2.a") |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| cmd = exec.Command(bin[0], append(bin[1:], "1")...) |
| |
| out, err := cmd.CombinedOutput() |
| |
| if err == nil { |
| t.Logf("%s", out) |
| t.Error("test program succeeded unexpectedly") |
| } else if ee, ok := err.(*exec.ExitError); !ok { |
| t.Logf("%s", out) |
| t.Errorf("error (%v) has type %T; expected exec.ExitError", err, err) |
| } else if ws, ok := ee.Sys().(syscall.WaitStatus); !ok { |
| t.Logf("%s", out) |
| t.Errorf("error.Sys (%v) has type %T; expected syscall.WaitStatus", ee.Sys(), ee.Sys()) |
| } else if !ws.Signaled() || ws.Signal() != syscall.SIGSEGV { |
| t.Logf("%s", out) |
| t.Errorf("got %v; expected SIGSEGV", ee) |
| } |
| } |
| |
| func TestSignalForwardingExternal(t *testing.T) { |
| switch GOOS { |
| case "darwin": |
| switch GOARCH { |
| case "arm", "arm64": |
| t.Skipf("skipping on %s/%s; see https://golang.org/issue/13701", GOOS, GOARCH) |
| } |
| case "windows": |
| t.Skip("skipping signal test on Windows") |
| } |
| |
| defer func() { |
| os.Remove("libgo2.a") |
| os.Remove("libgo2.h") |
| os.Remove("testp") |
| os.RemoveAll("pkg") |
| }() |
| |
| cmd := exec.Command("go", "build", "-buildmode=c-archive", "-o", "libgo2.a", "libgo2") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| ccArgs := append(cc, "-o", "testp"+exeSuffix, "main5.c", "libgo2.a") |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| // We want to send the process a signal and see if it dies. |
| // Normally the signal goes to the C thread, the Go signal |
| // handler picks it up, sees that it is running in a C thread, |
| // and the program dies. Unfortunately, occasionally the |
| // signal is delivered to a Go thread, which winds up |
| // discarding it because it was sent by another program and |
| // there is no Go handler for it. To avoid this, run the |
| // program several times in the hopes that it will eventually |
| // fail. |
| const tries = 20 |
| for i := 0; i < tries; i++ { |
| cmd = exec.Command(bin[0], append(bin[1:], "2")...) |
| |
| stderr, err := cmd.StderrPipe() |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer stderr.Close() |
| |
| r := bufio.NewReader(stderr) |
| |
| err = cmd.Start() |
| |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| // Wait for trigger to ensure that the process is started. |
| ok, err := r.ReadString('\n') |
| |
| // Verify trigger. |
| if err != nil || ok != "OK\n" { |
| t.Fatalf("Did not receive OK signal") |
| } |
| |
| // Give the program a chance to enter the sleep function. |
| time.Sleep(time.Millisecond) |
| |
| cmd.Process.Signal(syscall.SIGSEGV) |
| |
| err = cmd.Wait() |
| |
| if err == nil { |
| continue |
| } |
| |
| if ee, ok := err.(*exec.ExitError); !ok { |
| t.Errorf("error (%v) has type %T; expected exec.ExitError", err, err) |
| } else if ws, ok := ee.Sys().(syscall.WaitStatus); !ok { |
| t.Errorf("error.Sys (%v) has type %T; expected syscall.WaitStatus", ee.Sys(), ee.Sys()) |
| } else if !ws.Signaled() || ws.Signal() != syscall.SIGSEGV { |
| t.Errorf("got %v; expected SIGSEGV", ee) |
| } else { |
| // We got the error we expected. |
| return |
| } |
| } |
| |
| t.Errorf("program succeeded unexpectedly %d times", tries) |
| } |
| |
| func TestOsSignal(t *testing.T) { |
| switch GOOS { |
| case "windows": |
| t.Skip("skipping signal test on Windows") |
| } |
| |
| defer func() { |
| os.Remove("libgo3.a") |
| os.Remove("libgo3.h") |
| os.Remove("testp") |
| os.RemoveAll("pkg") |
| }() |
| |
| cmd := exec.Command("go", "build", "-buildmode=c-archive", "-o", "libgo3.a", "libgo3") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| ccArgs := append(cc, "-o", "testp"+exeSuffix, "main3.c", "libgo3.a") |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| if out, err := exec.Command(bin[0], bin[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| } |
| |
| func TestSigaltstack(t *testing.T) { |
| switch GOOS { |
| case "windows": |
| t.Skip("skipping signal test on Windows") |
| } |
| |
| defer func() { |
| os.Remove("libgo4.a") |
| os.Remove("libgo4.h") |
| os.Remove("testp") |
| os.RemoveAll("pkg") |
| }() |
| |
| cmd := exec.Command("go", "build", "-buildmode=c-archive", "-o", "libgo4.a", "libgo4") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| ccArgs := append(cc, "-o", "testp"+exeSuffix, "main4.c", "libgo4.a") |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| if out, err := exec.Command(bin[0], bin[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| } |
| |
| const testar = `#!/usr/bin/env bash |
| while expr $1 : '[-]' >/dev/null; do |
| shift |
| done |
| echo "testar" > $1 |
| echo "testar" > PWD/testar.ran |
| ` |
| |
| func TestExtar(t *testing.T) { |
| switch GOOS { |
| case "windows": |
| t.Skip("skipping signal test on Windows") |
| } |
| if runtime.Compiler == "gccgo" { |
| t.Skip("skipping -extar test when using gccgo") |
| } |
| |
| defer func() { |
| os.Remove("libgo4.a") |
| os.Remove("libgo4.h") |
| os.Remove("testar") |
| os.Remove("testar.ran") |
| os.RemoveAll("pkg") |
| }() |
| |
| os.Remove("testar") |
| dir, err := os.Getwd() |
| if err != nil { |
| t.Fatal(err) |
| } |
| s := strings.Replace(testar, "PWD", dir, 1) |
| if err := ioutil.WriteFile("testar", []byte(s), 0777); err != nil { |
| t.Fatal(err) |
| } |
| |
| cmd := exec.Command("go", "build", "-buildmode=c-archive", "-ldflags=-extar="+filepath.Join(dir, "testar"), "-o", "libgo4.a", "libgo4") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| if _, err := os.Stat("testar.ran"); err != nil { |
| if os.IsNotExist(err) { |
| t.Error("testar does not exist after go build") |
| } else { |
| t.Errorf("error checking testar: %v", err) |
| } |
| } |
| } |
| |
| func TestPIE(t *testing.T) { |
| switch GOOS { |
| case "windows", "darwin", "plan9": |
| t.Skipf("skipping PIE test on %s", GOOS) |
| } |
| |
| defer func() { |
| os.Remove("testp" + exeSuffix) |
| os.RemoveAll("pkg") |
| }() |
| |
| cmd := exec.Command("go", "install", "-buildmode=c-archive", "libgo") |
| cmd.Env = gopathEnv |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| libgoa := "libgo.a" |
| if runtime.Compiler == "gccgo" { |
| libgoa = "liblibgo.a" |
| } |
| |
| ccArgs := append(cc, "-fPIE", "-pie", "-o", "testp"+exeSuffix, "main.c", "main_unix.c", filepath.Join("pkg", libgodir, libgoa)) |
| if runtime.Compiler == "gccgo" { |
| ccArgs = append(ccArgs, "-lgo") |
| } |
| if out, err := exec.Command(ccArgs[0], ccArgs[1:]...).CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| binArgs := append(bin, "arg1", "arg2") |
| cmd = exec.Command(binArgs[0], binArgs[1:]...) |
| if runtime.Compiler == "gccgo" { |
| cmd.Env = append(os.Environ(), "GCCGO=1") |
| } |
| if out, err := cmd.CombinedOutput(); err != nil { |
| t.Logf("%s", out) |
| t.Fatal(err) |
| } |
| |
| f, err := elf.Open("testp" + exeSuffix) |
| if err != nil { |
| t.Fatal("elf.Open failed: ", err) |
| } |
| defer f.Close() |
| if hasDynTag(t, f, elf.DT_TEXTREL) { |
| t.Errorf("%s has DT_TEXTREL flag", "testp"+exeSuffix) |
| } |
| } |
| |
| func hasDynTag(t *testing.T, f *elf.File, tag elf.DynTag) bool { |
| ds := f.SectionByType(elf.SHT_DYNAMIC) |
| if ds == nil { |
| t.Error("no SHT_DYNAMIC section") |
| return false |
| } |
| d, err := ds.Data() |
| if err != nil { |
| t.Errorf("can't read SHT_DYNAMIC contents: %v", err) |
| return false |
| } |
| for len(d) > 0 { |
| var t elf.DynTag |
| switch f.Class { |
| case elf.ELFCLASS32: |
| t = elf.DynTag(f.ByteOrder.Uint32(d[:4])) |
| d = d[8:] |
| case elf.ELFCLASS64: |
| t = elf.DynTag(f.ByteOrder.Uint64(d[:8])) |
| d = d[16:] |
| } |
| if t == tag { |
| return true |
| } |
| } |
| return false |
| } |
