| // Copyright 2012 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 ( |
| "bytes" |
| "flag" |
| "fmt" |
| "internal/testenv" |
| "os" |
| "os/exec" |
| "path/filepath" |
| "regexp" |
| "runtime" |
| "strconv" |
| "strings" |
| "sync" |
| "testing" |
| "time" |
| ) |
| |
| var toRemove []string |
| |
| func TestMain(m *testing.M) { |
| status := m.Run() |
| for _, file := range toRemove { |
| os.RemoveAll(file) |
| } |
| os.Exit(status) |
| } |
| |
| var testprog struct { |
| sync.Mutex |
| dir string |
| target map[string]buildexe |
| } |
| |
| type buildexe struct { |
| exe string |
| err error |
| } |
| |
| func runTestProg(t *testing.T, binary, name string, env ...string) string { |
| if *flagQuick { |
| t.Skip("-quick") |
| } |
| |
| testenv.MustHaveGoBuild(t) |
| |
| exe, err := buildTestProg(t, binary) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| return runBuiltTestProg(t, exe, name, env...) |
| } |
| |
| func runBuiltTestProg(t *testing.T, exe, name string, env ...string) string { |
| if *flagQuick { |
| t.Skip("-quick") |
| } |
| |
| testenv.MustHaveGoBuild(t) |
| |
| cmd := testenv.CleanCmdEnv(exec.Command(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", exe, 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) |
| } |
| }() |
| |
| if err := cmd.Wait(); err != nil { |
| t.Logf("%s %s exit status: %v", exe, name, err) |
| } |
| close(done) |
| |
| return b.String() |
| } |
| |
| func buildTestProg(t *testing.T, binary string, flags ...string) (string, error) { |
| if *flagQuick { |
| t.Skip("-quick") |
| } |
| |
| testprog.Lock() |
| defer testprog.Unlock() |
| if testprog.dir == "" { |
| dir, err := os.MkdirTemp("", "go-build") |
| if err != nil { |
| t.Fatalf("failed to create temp directory: %v", err) |
| } |
| testprog.dir = dir |
| toRemove = append(toRemove, dir) |
| } |
| |
| if testprog.target == nil { |
| 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) |
| testprog.target[name] = target |
| return "", target.err |
| } |
| target.exe = exe |
| testprog.target[name] = target |
| return exe, nil |
| } |
| |
| 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 testCrashHandler(t *testing.T, cgo bool) { |
| type crashTest struct { |
| Cgo bool |
| } |
| var output string |
| if cgo { |
| output = runTestProg(t, "testprogcgo", "Crash") |
| } else { |
| output = runTestProg(t, "testprog", "Crash") |
| } |
| want := "main: recovered done\nnew-thread: recovered done\nsecond-new-thread: recovered done\nmain-again: recovered done\n" |
| if output != want { |
| t.Fatalf("output:\n%s\n\nwanted:\n%s", output, want) |
| } |
| } |
| |
| func TestCrashHandler(t *testing.T) { |
| testCrashHandler(t, false) |
| } |
| |
| func testDeadlock(t *testing.T, name string) { |
| // External linking brings in cgo, causing deadlock detection not working. |
| testenv.MustInternalLink(t) |
| |
| output := runTestProg(t, "testprog", name) |
| want := "fatal error: all goroutines are asleep - deadlock!\n" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| func TestSimpleDeadlock(t *testing.T) { |
| testDeadlock(t, "SimpleDeadlock") |
| } |
| |
| func TestInitDeadlock(t *testing.T) { |
| testDeadlock(t, "InitDeadlock") |
| } |
| |
| func TestLockedDeadlock(t *testing.T) { |
| testDeadlock(t, "LockedDeadlock") |
| } |
| |
| func TestLockedDeadlock2(t *testing.T) { |
| testDeadlock(t, "LockedDeadlock2") |
| } |
| |
| func TestGoexitDeadlock(t *testing.T) { |
| // External linking brings in cgo, causing deadlock detection not working. |
| testenv.MustInternalLink(t) |
| |
| output := runTestProg(t, "testprog", "GoexitDeadlock") |
| want := "no goroutines (main called runtime.Goexit) - deadlock!" |
| if !strings.Contains(output, want) { |
| t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want) |
| } |
| } |
| |
| func TestStackOverflow(t *testing.T) { |
| output := runTestProg(t, "testprog", "StackOverflow") |
| 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 TestThreadExhaustion(t *testing.T) { |
| output := runTestProg(t, "testprog", "ThreadExhaustion") |
| want := "runtime: program exceeds 10-thread limit\nfatal error: thread exhaustion" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| func TestRecursivePanic(t *testing.T) { |
| output := runTestProg(t, "testprog", "RecursivePanic") |
| want := `wrap: bad |
| panic: again |
| |
| ` |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, 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 TestGoexitCrash(t *testing.T) { |
| // External linking brings in cgo, causing deadlock detection not working. |
| testenv.MustInternalLink(t) |
| |
| output := runTestProg(t, "testprog", "GoexitExit") |
| want := "no goroutines (main called runtime.Goexit) - deadlock!" |
| if !strings.Contains(output, want) { |
| t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want) |
| } |
| } |
| |
| func TestGoexitDefer(t *testing.T) { |
| c := make(chan struct{}) |
| go func() { |
| defer func() { |
| r := recover() |
| if r != nil { |
| t.Errorf("non-nil recover during Goexit") |
| } |
| c <- struct{}{} |
| }() |
| runtime.Goexit() |
| }() |
| // Note: if the defer fails to run, we will get a deadlock here |
| <-c |
| } |
| |
| func TestGoNil(t *testing.T) { |
| output := runTestProg(t, "testprog", "GoNil") |
| want := "go of nil func value" |
| if !strings.Contains(output, want) { |
| t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want) |
| } |
| } |
| |
| func TestMainGoroutineID(t *testing.T) { |
| output := runTestProg(t, "testprog", "MainGoroutineID") |
| want := "panic: test\n\ngoroutine 1 [running]:\n" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| func TestNoHelperGoroutines(t *testing.T) { |
| output := runTestProg(t, "testprog", "NoHelperGoroutines") |
| matches := regexp.MustCompile(`goroutine [0-9]+ \[`).FindAllStringSubmatch(output, -1) |
| if len(matches) != 1 || matches[0][0] != "goroutine 1 [" { |
| t.Fatalf("want to see only goroutine 1, see:\n%s", output) |
| } |
| } |
| |
| func TestBreakpoint(t *testing.T) { |
| output := runTestProg(t, "testprog", "Breakpoint") |
| // If runtime.Breakpoint() is inlined, then the stack trace prints |
| // "runtime.Breakpoint(...)" instead of "runtime.Breakpoint()". |
| want := "runtime.Breakpoint(" |
| if !strings.Contains(output, want) { |
| t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want) |
| } |
| } |
| |
| func TestGoexitInPanic(t *testing.T) { |
| // External linking brings in cgo, causing deadlock detection not working. |
| testenv.MustInternalLink(t) |
| |
| // 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!" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| // Issue 14965: Runtime panics should be of type runtime.Error |
| func TestRuntimePanicWithRuntimeError(t *testing.T) { |
| testCases := [...]func(){ |
| 0: func() { |
| var m map[uint64]bool |
| m[1234] = true |
| }, |
| 1: func() { |
| ch := make(chan struct{}) |
| close(ch) |
| close(ch) |
| }, |
| 2: func() { |
| var ch = make(chan struct{}) |
| close(ch) |
| ch <- struct{}{} |
| }, |
| 3: func() { |
| var s = make([]int, 2) |
| _ = s[2] |
| }, |
| 4: func() { |
| n := -1 |
| _ = make(chan bool, n) |
| }, |
| 5: func() { |
| close((chan bool)(nil)) |
| }, |
| } |
| |
| for i, fn := range testCases { |
| got := panicValue(fn) |
| if _, ok := got.(runtime.Error); !ok { |
| t.Errorf("test #%d: recovered value %v(type %T) does not implement runtime.Error", i, got, got) |
| } |
| } |
| } |
| |
| func panicValue(fn func()) (recovered interface{}) { |
| defer func() { |
| recovered = recover() |
| }() |
| fn() |
| return |
| } |
| |
| func TestPanicAfterGoexit(t *testing.T) { |
| // an uncaught panic should still work after goexit |
| output := runTestProg(t, "testprog", "PanicAfterGoexit") |
| want := "panic: hello" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| func TestRecoveredPanicAfterGoexit(t *testing.T) { |
| // External linking brings in cgo, causing deadlock detection not working. |
| testenv.MustInternalLink(t) |
| |
| output := runTestProg(t, "testprog", "RecoveredPanicAfterGoexit") |
| 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 TestRecoverBeforePanicAfterGoexit(t *testing.T) { |
| // External linking brings in cgo, causing deadlock detection not working. |
| testenv.MustInternalLink(t) |
| |
| 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) |
| |
| 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) { |
| if os.Getenv("GO_BUILDER_NAME") == "darwin-amd64-10_12" { |
| // A suspected kernel bug in macOS 10.12 occasionally results in |
| // an apparent deadlock when dialing localhost. The errors have not |
| // been observed on newer versions of the OS, so we don't plan to work |
| // around them. See https://golang.org/issue/22019. |
| testenv.SkipFlaky(t, 22019) |
| } |
| |
| t.Parallel() |
| output := runTestProg(t, "testprognet", "NetpollDeadlock") |
| want := "done\n" |
| if !strings.HasSuffix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| func TestPanicTraceback(t *testing.T) { |
| t.Parallel() |
| output := runTestProg(t, "testprog", "PanicTraceback") |
| 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) |
| } |
| |
| // Check functions in the traceback. |
| fns := []string{"main.pt1.func1", "panic", "main.pt2.func1", "panic", "main.pt2", "main.pt1"} |
| for _, fn := range fns { |
| re := regexp.MustCompile(`(?m)^` + regexp.QuoteMeta(fn) + `\(.*\n`) |
| idx := re.FindStringIndex(output) |
| if idx == nil { |
| t.Fatalf("expected %q function in traceback:\n%s", fn, output) |
| } |
| output = output[idx[1]:] |
| } |
| } |
| |
| func testPanicDeadlock(t *testing.T, name string, want string) { |
| // test issue 14432 |
| output := runTestProg(t, "testprog", name) |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| func TestPanicDeadlockGosched(t *testing.T) { |
| testPanicDeadlock(t, "GoschedInPanic", "panic: errorThatGosched\n\n") |
| } |
| |
| func TestPanicDeadlockSyscall(t *testing.T) { |
| testPanicDeadlock(t, "SyscallInPanic", "1\n2\npanic: 3\n\n") |
| } |
| |
| func TestPanicLoop(t *testing.T) { |
| output := runTestProg(t, "testprog", "PanicLoop") |
| if want := "panic while printing panic value"; !strings.Contains(output, want) { |
| t.Errorf("output does not contain %q:\n%s", want, output) |
| } |
| } |
| |
| func TestMemPprof(t *testing.T) { |
| testenv.MustHaveGoRun(t) |
| |
| exe, err := buildTestProg(t, "testprog") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| got, err := testenv.CleanCmdEnv(exec.Command(exe, "MemProf")).CombinedOutput() |
| if err != nil { |
| t.Fatal(err) |
| } |
| fn := strings.TrimSpace(string(got)) |
| defer os.Remove(fn) |
| |
| for try := 0; try < 2; try++ { |
| cmd := testenv.CleanCmdEnv(exec.Command(testenv.GoToolPath(t), "tool", "pprof", "-alloc_space", "-top")) |
| // Check that pprof works both with and without explicit executable on command line. |
| if try == 0 { |
| cmd.Args = append(cmd.Args, exe, fn) |
| } else { |
| cmd.Args = append(cmd.Args, fn) |
| } |
| found := false |
| for i, e := range cmd.Env { |
| if strings.HasPrefix(e, "PPROF_TMPDIR=") { |
| cmd.Env[i] = "PPROF_TMPDIR=" + os.TempDir() |
| found = true |
| break |
| } |
| } |
| if !found { |
| cmd.Env = append(cmd.Env, "PPROF_TMPDIR="+os.TempDir()) |
| } |
| |
| top, err := cmd.CombinedOutput() |
| t.Logf("%s:\n%s", cmd.Args, top) |
| if err != nil { |
| t.Error(err) |
| } else if !bytes.Contains(top, []byte("MemProf")) { |
| t.Error("missing MemProf in pprof output") |
| } |
| } |
| } |
| |
| var concurrentMapTest = flag.Bool("run_concurrent_map_tests", false, "also run flaky concurrent map tests") |
| |
| func TestConcurrentMapWrites(t *testing.T) { |
| if !*concurrentMapTest { |
| t.Skip("skipping without -run_concurrent_map_tests") |
| } |
| testenv.MustHaveGoRun(t) |
| output := runTestProg(t, "testprog", "concurrentMapWrites") |
| want := "fatal error: concurrent map writes" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| func TestConcurrentMapReadWrite(t *testing.T) { |
| if !*concurrentMapTest { |
| t.Skip("skipping without -run_concurrent_map_tests") |
| } |
| testenv.MustHaveGoRun(t) |
| output := runTestProg(t, "testprog", "concurrentMapReadWrite") |
| want := "fatal error: concurrent map read and map write" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| func TestConcurrentMapIterateWrite(t *testing.T) { |
| if !*concurrentMapTest { |
| t.Skip("skipping without -run_concurrent_map_tests") |
| } |
| testenv.MustHaveGoRun(t) |
| output := runTestProg(t, "testprog", "concurrentMapIterateWrite") |
| want := "fatal error: concurrent map iteration and map write" |
| if !strings.HasPrefix(output, want) { |
| t.Fatalf("output does not start with %q:\n%s", want, output) |
| } |
| } |
| |
| type point struct { |
| x, y *int |
| } |
| |
| func (p *point) negate() { |
| *p.x = *p.x * -1 |
| *p.y = *p.y * -1 |
| } |
| |
| // Test for issue #10152. |
| func TestPanicInlined(t *testing.T) { |
| defer func() { |
| r := recover() |
| if r == nil { |
| t.Fatalf("recover failed") |
| } |
| buf := make([]byte, 2048) |
| n := runtime.Stack(buf, false) |
| buf = buf[:n] |
| if !bytes.Contains(buf, []byte("(*point).negate(")) { |
| t.Fatalf("expecting stack trace to contain call to (*point).negate()") |
| } |
| }() |
| |
| pt := new(point) |
| pt.negate() |
| } |
| |
| // Test for issues #3934 and #20018. |
| // We want to delay exiting until a panic print is complete. |
| func TestPanicRace(t *testing.T) { |
| testenv.MustHaveGoRun(t) |
| |
| exe, err := buildTestProg(t, "testprog") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| // The test is intentionally racy, and in my testing does not |
| // produce the expected output about 0.05% of the time. |
| // So run the program in a loop and only fail the test if we |
| // get the wrong output ten times in a row. |
| const tries = 10 |
| retry: |
| for i := 0; i < tries; i++ { |
| got, err := testenv.CleanCmdEnv(exec.Command(exe, "PanicRace")).CombinedOutput() |
| if err == nil { |
| t.Logf("try %d: program exited successfully, should have failed", i+1) |
| continue |
| } |
| |
| if i > 0 { |
| t.Logf("try %d:\n", i+1) |
| } |
| t.Logf("%s\n", got) |
| |
| wants := []string{ |
| "panic: crash", |
| "PanicRace", |
| "created by ", |
| } |
| for _, want := range wants { |
| if !bytes.Contains(got, []byte(want)) { |
| t.Logf("did not find expected string %q", want) |
| continue retry |
| } |
| } |
| |
| // Test generated expected output. |
| return |
| } |
| t.Errorf("test ran %d times without producing expected output", tries) |
| } |
| |
| func TestBadTraceback(t *testing.T) { |
| output := runTestProg(t, "testprog", "BadTraceback") |
| for _, want := range []string{ |
| "runtime: unexpected return pc", |
| "called from 0xbad", |
| "00000bad", // Smashed LR in hex dump |
| "<main.badLR", // Symbolization in hex dump (badLR1 or badLR2) |
| } { |
| if !strings.Contains(output, want) { |
| t.Errorf("output does not contain %q:\n%s", want, output) |
| } |
| } |
| } |
| |
| func TestTimePprof(t *testing.T) { |
| // 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) |
| |
| cmd := testenv.CleanCmdEnv(exec.Command(testenv.GoToolPath(t), "tool", "pprof", "-top", "-nodecount=1", fn)) |
| cmd.Env = append(cmd.Env, "PPROF_TMPDIR="+os.TempDir()) |
| top, err := cmd.CombinedOutput() |
| t.Logf("%s", top) |
| if err != nil { |
| t.Error(err) |
| } else if bytes.Contains(top, []byte("ExternalCode")) { |
| t.Error("profiler refers to ExternalCode") |
| } |
| } |
| |
| // Test that runtime.abort does so. |
| func TestAbort(t *testing.T) { |
| // Pass GOTRACEBACK to ensure we get runtime frames. |
| output := runTestProg(t, "testprog", "Abort", "GOTRACEBACK=system") |
| if want := "runtime.abort"; !strings.Contains(output, want) { |
| t.Errorf("output does not contain %q:\n%s", want, output) |
| } |
| if strings.Contains(output, "BAD") { |
| t.Errorf("output contains BAD:\n%s", output) |
| } |
| // Check that it's a signal traceback. |
| want := "PC=" |
| // For systems that use a breakpoint, check specifically for that. |
| switch runtime.GOARCH { |
| case "386", "amd64": |
| switch runtime.GOOS { |
| case "plan9": |
| want = "sys: breakpoint" |
| case "windows": |
| want = "Exception 0x80000003" |
| default: |
| want = "SIGTRAP" |
| } |
| } |
| if !strings.Contains(output, want) { |
| t.Errorf("output does not contain %q:\n%s", want, output) |
| } |
| } |
| |
| // For TestRuntimePanic: test a panic in the runtime package without |
| // involving the testing harness. |
| func init() { |
| if os.Getenv("GO_TEST_RUNTIME_PANIC") == "1" { |
| defer func() { |
| if r := recover(); r != nil { |
| // We expect to crash, so exit 0 |
| // to indicate failure. |
| os.Exit(0) |
| } |
| }() |
| runtime.PanicForTesting(nil, 1) |
| // We expect to crash, so exit 0 to indicate failure. |
| os.Exit(0) |
| } |
| } |
| |
| func TestRuntimePanic(t *testing.T) { |
| testenv.MustHaveExec(t) |
| 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) |
| if err == nil { |
| t.Error("child process did not fail") |
| } else if want := "runtime.unexportedPanicForTesting"; !bytes.Contains(out, []byte(want)) { |
| t.Errorf("output did not contain expected string %q", want) |
| } |
| } |
| |
| // Test that g0 stack overflows are handled gracefully. |
| 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 os.Getenv("TEST_G0_STACK_OVERFLOW") != "1" { |
| cmd := testenv.CleanCmdEnv(exec.Command(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) |
| } |
| // Check that it's a signal-style traceback. |
| if runtime.GOOS != "windows" { |
| if want := "PC="; !strings.Contains(string(out), want) { |
| t.Errorf("output does not contain %q:\n%s", want, out) |
| } |
| } |
| return |
| } |
| |
| 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) |
| } |
| } |
| } |