import (
"bytes"
+ "errors"
"flag"
"fmt"
"internal/testenv"
- "io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"runtime"
- "strconv"
"strings"
"sync"
"testing"
var toRemove []string
func TestMain(m *testing.M) {
+ _, coreErrBefore := os.Stat("core")
+
status := m.Run()
for _, file := range toRemove {
os.RemoveAll(file)
}
+
+ _, coreErrAfter := os.Stat("core")
+ if coreErrBefore != nil && coreErrAfter == nil {
+ fmt.Fprintln(os.Stderr, "runtime.test: some test left a core file behind")
+ if status == 0 {
+ status = 1
+ }
+ }
+
os.Exit(status)
}
var testprog struct {
sync.Mutex
dir string
- target map[string]buildexe
+ target map[string]*buildexe
}
type buildexe struct {
- exe string
- err error
+ once sync.Once
+ exe string
+ err error
}
func runTestProg(t *testing.T, binary, name string, env ...string) string {
}
testenv.MustHaveGoBuild(t)
+ t.Helper()
exe, err := buildTestProg(t, binary)
if err != nil {
t.Fatal(err)
}
- cmd := testenv.CleanCmdEnv(exec.Command(exe, name))
+ return runBuiltTestProg(t, exe, name, env...)
+}
+
+func runBuiltTestProg(t *testing.T, exe, name string, env ...string) string {
+ t.Helper()
+
+ if *flagQuick {
+ t.Skip("-quick")
+ }
+
+ start := time.Now()
+
+ cmd := testenv.CleanCmdEnv(testenv.Command(t, exe, name))
cmd.Env = append(cmd.Env, env...)
if testing.Short() {
cmd.Env = append(cmd.Env, "RUNTIME_TEST_SHORT=1")
}
- var b bytes.Buffer
- cmd.Stdout = &b
- cmd.Stderr = &b
- if err := cmd.Start(); err != nil {
- t.Fatalf("starting %s %s: %v", binary, name, err)
- }
-
- // If the process doesn't complete within 1 minute,
- // assume it is hanging and kill it to get a stack trace.
- p := cmd.Process
- done := make(chan bool)
- go func() {
- scale := 1
- // This GOARCH/GOOS test is copied from cmd/dist/test.go.
- // TODO(iant): Have cmd/dist update the environment variable.
- if runtime.GOARCH == "arm" || runtime.GOOS == "windows" {
- scale = 2
- }
- if s := os.Getenv("GO_TEST_TIMEOUT_SCALE"); s != "" {
- if sc, err := strconv.Atoi(s); err == nil {
- scale = sc
- }
- }
-
- select {
- case <-done:
- case <-time.After(time.Duration(scale) * time.Minute):
- p.Signal(sigquit)
+ out, err := cmd.CombinedOutput()
+ if err == nil {
+ t.Logf("%v (%v): ok", cmd, time.Since(start))
+ } else {
+ if _, ok := err.(*exec.ExitError); ok {
+ t.Logf("%v: %v", cmd, err)
+ } else if errors.Is(err, exec.ErrWaitDelay) {
+ t.Fatalf("%v: %v", cmd, err)
+ } else {
+ t.Fatalf("%v failed to start: %v", cmd, err)
}
- }()
-
- if err := cmd.Wait(); err != nil {
- t.Logf("%s %s exit status: %v", binary, name, err)
}
- close(done)
-
- return b.String()
+ return string(out)
}
+var serializeBuild = make(chan bool, 2)
+
func buildTestProg(t *testing.T, binary string, flags ...string) (string, error) {
if *flagQuick {
t.Skip("-quick")
}
-
- checkStaleRuntime(t)
+ testenv.MustHaveGoBuild(t)
testprog.Lock()
- defer testprog.Unlock()
if testprog.dir == "" {
- dir, err := ioutil.TempDir("", "go-build")
+ dir, err := os.MkdirTemp("", "go-build")
if err != nil {
t.Fatalf("failed to create temp directory: %v", err)
}
}
if testprog.target == nil {
- testprog.target = make(map[string]buildexe)
+ testprog.target = make(map[string]*buildexe)
}
name := binary
if len(flags) > 0 {
name += "_" + strings.Join(flags, "_")
}
target, ok := testprog.target[name]
- if ok {
- return target.exe, target.err
- }
-
- exe := filepath.Join(testprog.dir, name+".exe")
- cmd := exec.Command(testenv.GoToolPath(t), append([]string{"build", "-o", exe}, flags...)...)
- cmd.Dir = "testdata/" + binary
- out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
- if err != nil {
- target.err = fmt.Errorf("building %s %v: %v\n%s", binary, flags, err, out)
+ if !ok {
+ target = &buildexe{}
testprog.target[name] = target
- return "", target.err
}
- target.exe = exe
- testprog.target[name] = target
- return exe, nil
-}
-var (
- staleRuntimeOnce sync.Once // guards init of staleRuntimeErr
- staleRuntimeErr error
-)
+ dir := testprog.dir
+
+ // Unlock testprog while actually building, so that other
+ // tests can look up executables that were already built.
+ testprog.Unlock()
-func checkStaleRuntime(t *testing.T) {
- staleRuntimeOnce.Do(func() {
- // 'go run' uses the installed copy of runtime.a, which may be out of date.
- out, err := testenv.CleanCmdEnv(exec.Command(testenv.GoToolPath(t), "list", "-gcflags=all="+os.Getenv("GO_GCFLAGS"), "-f", "{{.Stale}}", "runtime")).CombinedOutput()
+ target.once.Do(func() {
+ // Only do two "go build"'s at a time,
+ // to keep load from getting too high.
+ serializeBuild <- true
+ defer func() { <-serializeBuild }()
+
+ // Don't get confused if testenv.GoToolPath calls t.Skip.
+ target.err = errors.New("building test called t.Skip")
+
+ exe := filepath.Join(dir, name+".exe")
+
+ start := time.Now()
+ cmd := exec.Command(testenv.GoToolPath(t), append([]string{"build", "-o", exe}, flags...)...)
+ t.Logf("running %v", cmd)
+ cmd.Dir = "testdata/" + binary
+ out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
if err != nil {
- staleRuntimeErr = fmt.Errorf("failed to execute 'go list': %v\n%v", err, string(out))
- return
- }
- if string(out) != "false\n" {
- t.Logf("go list -f {{.Stale}} runtime:\n%s", out)
- out, err := testenv.CleanCmdEnv(exec.Command(testenv.GoToolPath(t), "list", "-gcflags=all="+os.Getenv("GO_GCFLAGS"), "-f", "{{.StaleReason}}", "runtime")).CombinedOutput()
- if err != nil {
- t.Logf("go list -f {{.StaleReason}} failed: %v", err)
- }
- t.Logf("go list -f {{.StaleReason}} runtime:\n%s", out)
- staleRuntimeErr = fmt.Errorf("Stale runtime.a. Run 'go install runtime'.")
+ target.err = fmt.Errorf("building %s %v: %v\n%s", binary, flags, err, out)
+ } else {
+ t.Logf("built %v in %v", name, time.Since(start))
+ target.exe = exe
+ target.err = nil
}
})
- if staleRuntimeErr != nil {
- t.Fatal(staleRuntimeErr)
+
+ return target.exe, target.err
+}
+
+func TestVDSO(t *testing.T) {
+ t.Parallel()
+ output := runTestProg(t, "testprog", "SignalInVDSO")
+ want := "success\n"
+ if output != want {
+ t.Fatalf("output:\n%s\n\nwanted:\n%s", output, want)
}
}
}
func testDeadlock(t *testing.T, name string) {
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
output := runTestProg(t, "testprog", name)
want := "fatal error: all goroutines are asleep - deadlock!\n"
if !strings.HasPrefix(output, want) {
}
func TestGoexitDeadlock(t *testing.T) {
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
output := runTestProg(t, "testprog", "GoexitDeadlock")
want := "no goroutines (main called runtime.Goexit) - deadlock!"
if !strings.Contains(output, want) {
func TestStackOverflow(t *testing.T) {
output := runTestProg(t, "testprog", "StackOverflow")
- want := "runtime: goroutine stack exceeds 1474560-byte limit\nfatal error: stack overflow"
- if !strings.HasPrefix(output, want) {
- t.Fatalf("output does not start with %q:\n%s", want, output)
+ want := []string{
+ "runtime: goroutine stack exceeds 1474560-byte limit\n",
+ "fatal error: stack overflow",
+ // information about the current SP and stack bounds
+ "runtime: sp=",
+ "stack=[",
+ }
+ if !strings.HasPrefix(output, want[0]) {
+ t.Errorf("output does not start with %q", want[0])
+ }
+ for _, s := range want[1:] {
+ if !strings.Contains(output, s) {
+ t.Errorf("output does not contain %q", s)
+ }
+ }
+ if t.Failed() {
+ t.Logf("output:\n%s", output)
}
}
}
+func TestRecursivePanic2(t *testing.T) {
+ output := runTestProg(t, "testprog", "RecursivePanic2")
+ want := `first panic
+second panic
+panic: third panic
+
+`
+ if !strings.HasPrefix(output, want) {
+ t.Fatalf("output does not start with %q:\n%s", want, output)
+ }
+
+}
+
+func TestRecursivePanic3(t *testing.T) {
+ output := runTestProg(t, "testprog", "RecursivePanic3")
+ want := `panic: first panic
+
+`
+ if !strings.HasPrefix(output, want) {
+ t.Fatalf("output does not start with %q:\n%s", want, output)
+ }
+
+}
+
+func TestRecursivePanic4(t *testing.T) {
+ output := runTestProg(t, "testprog", "RecursivePanic4")
+ want := `panic: first panic [recovered]
+ panic: second panic
+`
+ if !strings.HasPrefix(output, want) {
+ t.Fatalf("output does not start with %q:\n%s", want, output)
+ }
+
+}
+
+func TestRecursivePanic5(t *testing.T) {
+ output := runTestProg(t, "testprog", "RecursivePanic5")
+ want := `first panic
+second panic
+panic: third panic
+`
+ if !strings.HasPrefix(output, want) {
+ t.Fatalf("output does not start with %q:\n%s", want, output)
+ }
+
+}
+
func TestGoexitCrash(t *testing.T) {
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
output := runTestProg(t, "testprog", "GoexitExit")
want := "no goroutines (main called runtime.Goexit) - deadlock!"
if !strings.Contains(output, want) {
}
func TestGoexitInPanic(t *testing.T) {
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
// see issue 8774: this code used to trigger an infinite recursion
output := runTestProg(t, "testprog", "GoexitInPanic")
want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
}
}
-func panicValue(fn func()) (recovered interface{}) {
+func panicValue(fn func()) (recovered any) {
defer func() {
recovered = recover()
}()
}
func TestRecoveredPanicAfterGoexit(t *testing.T) {
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
output := runTestProg(t, "testprog", "RecoveredPanicAfterGoexit")
want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
if !strings.HasPrefix(output, want) {
}
func TestRecoverBeforePanicAfterGoexit(t *testing.T) {
- // 1. defer a function that recovers
- // 2. defer a function that panics
- // 3. call goexit
- // Goexit should run the #2 defer. Its panic
- // should be caught by the #1 defer, and execution
- // should resume in the caller. Like the Goexit
- // never happened!
- defer func() {
- r := recover()
- if r == nil {
- panic("bad recover")
- }
- }()
- defer func() {
- panic("hello")
- }()
- runtime.Goexit()
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
+ t.Parallel()
+ output := runTestProg(t, "testprog", "RecoverBeforePanicAfterGoexit")
+ want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
+ if !strings.HasPrefix(output, want) {
+ t.Fatalf("output does not start with %q:\n%s", want, output)
+ }
+}
+
+func TestRecoverBeforePanicAfterGoexit2(t *testing.T) {
+ // External linking brings in cgo, causing deadlock detection not working.
+ testenv.MustInternalLink(t, false)
+
+ t.Parallel()
+ output := runTestProg(t, "testprog", "RecoverBeforePanicAfterGoexit2")
+ want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
+ if !strings.HasPrefix(output, want) {
+ t.Fatalf("output does not start with %q:\n%s", want, output)
+ }
}
func TestNetpollDeadlock(t *testing.T) {
func TestPanicTraceback(t *testing.T) {
t.Parallel()
output := runTestProg(t, "testprog", "PanicTraceback")
- want := "panic: hello"
+ want := "panic: hello\n\tpanic: panic pt2\n\tpanic: panic pt1\n"
if !strings.HasPrefix(output, want) {
t.Fatalf("output does not start with %q:\n%s", want, output)
}
got, err := testenv.CleanCmdEnv(exec.Command(exe, "MemProf")).CombinedOutput()
if err != nil {
- t.Fatal(err)
+ t.Fatalf("testprog failed: %s, output:\n%s", err, got)
}
fn := strings.TrimSpace(string(got))
defer os.Remove(fn)
func TestBadTraceback(t *testing.T) {
output := runTestProg(t, "testprog", "BadTraceback")
for _, want := range []string{
- "runtime: unexpected return pc",
+ "unexpected return pc",
"called from 0xbad",
"00000bad", // Smashed LR in hex dump
"<main.badLR", // Symbolization in hex dump (badLR1 or badLR2)
}
func TestTimePprof(t *testing.T) {
- if runtime.GOOS == "aix" {
- t.Skip("pprof not yet available on AIX (see golang.org/issue/28555)")
+ // This test is unreliable on any system in which nanotime
+ // calls into libc.
+ switch runtime.GOOS {
+ case "aix", "darwin", "illumos", "openbsd", "solaris":
+ t.Skipf("skipping on %s because nanotime calls libc", runtime.GOOS)
}
- fn := runTestProg(t, "testprog", "TimeProf")
+
+ // Pass GOTRACEBACK for issue #41120 to try to get more
+ // information on timeout.
+ fn := runTestProg(t, "testprog", "TimeProf", "GOTRACEBACK=crash")
fn = strings.TrimSpace(fn)
defer os.Remove(fn)
func TestRuntimePanic(t *testing.T) {
testenv.MustHaveExec(t)
- cmd := testenv.CleanCmdEnv(exec.Command(os.Args[0], "-test.run=TestRuntimePanic"))
+ cmd := testenv.CleanCmdEnv(exec.Command(os.Args[0], "-test.run=^TestRuntimePanic$"))
cmd.Env = append(cmd.Env, "GO_TEST_RUNTIME_PANIC=1")
out, err := cmd.CombinedOutput()
t.Logf("%s", out)
func TestG0StackOverflow(t *testing.T) {
testenv.MustHaveExec(t)
- switch runtime.GOOS {
- case "darwin", "dragonfly", "freebsd", "linux", "netbsd", "openbsd", "android":
- t.Skipf("g0 stack is wrong on pthread platforms (see golang.org/issue/26061)")
+ if runtime.GOOS == "ios" {
+ testenv.SkipFlaky(t, 62671)
+ }
+ if runtime.GOOS == "windows" && runtime.GOARCH == "arm64" {
+ testenv.SkipFlaky(t, 63938) // TODO(cherry): fix and unskip
}
if os.Getenv("TEST_G0_STACK_OVERFLOW") != "1" {
- cmd := testenv.CleanCmdEnv(exec.Command(os.Args[0], "-test.run=TestG0StackOverflow", "-test.v"))
+ cmd := testenv.CleanCmdEnv(testenv.Command(t, os.Args[0], "-test.run=^TestG0StackOverflow$", "-test.v"))
cmd.Env = append(cmd.Env, "TEST_G0_STACK_OVERFLOW=1")
out, err := cmd.CombinedOutput()
// Don't check err since it's expected to crash.
if n := strings.Count(string(out), "morestack on g0\n"); n != 1 {
t.Fatalf("%s\n(exit status %v)", out, err)
}
+ if runtime.CrashStackImplemented {
+ // check for a stack trace
+ want := "runtime.stackOverflow"
+ if n := strings.Count(string(out), want); n < 5 {
+ t.Errorf("output does not contain %q at least 5 times:\n%s", want, out)
+ }
+ return // it's not a signal-style traceback
+ }
// Check that it's a signal-style traceback.
if runtime.GOOS != "windows" {
if want := "PC="; !strings.Contains(string(out), want) {
runtime.G0StackOverflow()
}
+
+// Test that panic message is not clobbered.
+// See issue 30150.
+func TestDoublePanic(t *testing.T) {
+ output := runTestProg(t, "testprog", "DoublePanic", "GODEBUG=clobberfree=1")
+ wants := []string{"panic: XXX", "panic: YYY"}
+ for _, want := range wants {
+ if !strings.Contains(output, want) {
+ t.Errorf("output:\n%s\n\nwant output containing: %s", output, want)
+ }
+ }
+}
+
+// Test that panic while panicking discards error message
+// See issue 52257
+func TestPanicWhilePanicking(t *testing.T) {
+ tests := []struct {
+ Want string
+ Func string
+ }{
+ {
+ "panic while printing panic value: important error message",
+ "ErrorPanic",
+ },
+ {
+ "panic while printing panic value: important stringer message",
+ "StringerPanic",
+ },
+ {
+ "panic while printing panic value: type",
+ "DoubleErrorPanic",
+ },
+ {
+ "panic while printing panic value: type",
+ "DoubleStringerPanic",
+ },
+ {
+ "panic while printing panic value: type",
+ "CircularPanic",
+ },
+ {
+ "important string message",
+ "StringPanic",
+ },
+ {
+ "nil",
+ "NilPanic",
+ },
+ }
+ for _, x := range tests {
+ output := runTestProg(t, "testprog", x.Func)
+ if !strings.Contains(output, x.Want) {
+ t.Errorf("output does not contain %q:\n%s", x.Want, output)
+ }
+ }
+}
+
+func TestPanicOnUnsafeSlice(t *testing.T) {
+ output := runTestProg(t, "testprog", "panicOnNilAndEleSizeIsZero")
+ want := "panic: runtime error: unsafe.Slice: ptr is nil and len is not zero"
+ if !strings.Contains(output, want) {
+ t.Errorf("output does not contain %q:\n%s", want, output)
+ }
+}
+
+func TestNetpollWaiters(t *testing.T) {
+ t.Parallel()
+ output := runTestProg(t, "testprognet", "NetpollWaiters")
+ want := "OK\n"
+ if output != want {
+ t.Fatalf("output is not %q\n%s", want, output)
+ }
+}