How to use stripLinePrefix method of report Package

Best Syzkaller code snippet using report.stripLinePrefix

linux.go

Source:linux.go

...169			if matchOops(line, oops1, ctx.ignores) {170				oops = oops1171				startPos = pos172				context = ctx.extractContext(line)173				//stripped, questionable := ctx.stripLinePrefix(line, context1)174				return175			}176		}177	}178	return179}180// Yes, it is complex, but all state and logic are tightly coupled. It's unclear how to simplify it.181// nolint: gocyclo182func (ctx *linux) findReport(output []byte, oops *oops, startPos int, context string) (183	endPos, reportEnd int, report []byte, prefix [][]byte) {184	// Prepend 5 lines preceding start of the report,185	// they can contain additional info related to the report.186	maxPrefix := 5187	if ctx.taskContext.MatchString(context) {188		// If we have CONFIG_PRINTK_CALLER, we collect more b/c it comes from the same task.189		maxPrefix = 50190	}191	secondReportPos := 0192	textLines := 0193	skipText := false194	for pos, next := 0, 0; pos < len(output); pos = next + 1 {195		next = bytes.IndexByte(output[pos:], '\n')196		if next != -1 {197			next += pos198		} else {199			next = len(output)200		}201		line := output[pos:next]202		context1 := ctx.extractContext(line)203		stripped, questionable := ctx.stripLinePrefix(line, context1)204		if pos < startPos {205			if context1 == context && len(stripped) != 0 && !questionable {206				prefix = append(prefix, append([]byte{}, stripped...))207				if len(prefix) > maxPrefix {208					prefix = prefix[1:]209				}210			}211			continue212		}213		oopsLine := pos == startPos214		for _, oops1 := range linuxOopses {215			if !matchOops(line, oops1, ctx.ignores) {216				if !oopsLine && secondReportPos == 0 {217					for _, pattern := range ctx.infoMessagesWithStack {218						if bytes.Contains(line, pattern) {219							secondReportPos = pos220							break221						}222					}223				}224				continue225			}226			endPos = next227			if !oopsLine && secondReportPos == 0 {228				if !matchesAny(line, ctx.reportStartIgnores) {229					secondReportPos = pos230				}231			}232		}233		if !oopsLine && (context1 != context || questionable) {234			continue235		}236		textLines++237		skipLine := skipText238		if bytes.Contains(line, []byte("Disabling lock debugging due to kernel taint")) {239			skipLine = true240		} else if textLines > 25 &&241			(bytes.Contains(line, []byte("Kernel panic - not syncing")) ||242				bytes.Contains(line, []byte("WARNING: possible circular locking dependency detected"))) {243			// If panic_on_warn set, then we frequently have 2 stacks:244			// one for the actual report (or maybe even more than one),245			// and then one for panic caused by panic_on_warn. This makes246			// reports unnecessary long and the panic (current) stack247			// is always present in the actual report. So we strip the248			// panic message. However, we check that we have enough lines249			// before the panic, because sometimes we have, for example,250			// a single WARNING line without a stack and then the panic251			// with the stack.252			// Oops messages frequently induce possible deadlock reports253			// because oops reporting introduces unexpected locking chains.254			// So if we have enough of the actual oops, strip the deadlock message.255			skipText = true256			skipLine = true257		}258		if !oopsLine && skipLine {259			continue260		}261		report = append(report, stripped...)262		report = append(report, '\n')263		if secondReportPos == 0 || context != "" && context != "console" {264			reportEnd = len(report)265		}266	}267	return268}269func (ctx *linux) stripLinePrefix(line []byte, context string) ([]byte, bool) {270	if last := len(line) - 1; last >= 0 && line[last] == '\r' {271		line = line[:last]272	}273	if context == "" {274		return line, false275	}276	questionable := ctx.questionableRe.Match(line) && !bytes.Contains(line, ctx.eoi)277	start := bytes.Index(line, []byte("] ")) + 2278	return line[start:], questionable279}280func (ctx *linux) extractContext(line []byte) string {281	match := ctx.consoleOutputRe.FindSubmatchIndex(line)282	if match == nil {283		return ""...

stripLinePrefix

Using AI Code Generation

1import (2func main() {3    trace.Start(os.Stderr)4    defer trace.Stop()5    f()6}7func f() {8    r := &report{}9    g(r)10    fmt.Println(r)11}12func g(r *report) {13    err := fmt.Errorf("error")14    r.error(err)15}16type report struct {17}18func (r *report) error(err error) {19    r.err = r.stripLinePrefix(r.err)20    log.Printf("reporting error: %v", r.err)21}22func (r *report) stripLinePrefix(err error) error {23    _, file, line, ok := runtime.Caller(1)24    if !ok {25    }26    file = filepath.Base(file)27    lineStr := fmt.Sprintf("%d", line)28    return fmt.Errorf("%s:%s: %w", file, lineStr, err)29}

stripLinePrefix

Using AI Code Generation

1import (2func main() {3	file, err := os.Open("1.txt")4	if err != nil {5		fmt.Println(err)6	}7	defer file.Close()8	scanner := bufio.NewScanner(file)

stripLinePrefix

Using AI Code Generation

1import (2func main() {3    var canvas = svg.New(os.Stdout)4    canvas.Start(200, 200)5    canvas.Rect(0, 0, 200, 200)6    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")7    canvas.End()8}9import (10func main() {11    var canvas = svg.New(os.Stdout)12    canvas.Start(200, 200)13    canvas.Rect(0, 0, 200, 200)14    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")15    canvas.End()16}17import (18func main() {19    var canvas = svg.New(os.Stdout)20    canvas.Start(200, 200)21    canvas.Rect(0, 0, 200, 200)22    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")23    canvas.End()24}25import (26func main() {27    var canvas = svg.New(os.Stdout)28    canvas.Start(200, 200)29    canvas.Rect(0, 0, 200, 200)30    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")31    canvas.End()32}33import (34func main() {35    var canvas = svg.New(os.Stdout)36    canvas.Start(200, 200)37    canvas.Rect(0, 0, 200, 200)38    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")

stripLinePrefix

Using AI Code Generation

1import (2func main() {3    report := gas.NewReport()4    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 1, "test"))5    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 2, "test"))6    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 3, "test"))7    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 4, "test"))8    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 5, "test"))9    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 6, "test"))10    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 7, "test"))11    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 8, "test"))12    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 9, "test"))13    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 10, "test"))14    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 11, "test"))15    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 12, "test"))16    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 13, "test"))17    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 14, "test"))18    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 15, "test"))19    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 16, "test"))

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.