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How to use writeChecksums method of prog Package

Best Syzkaller code snippet using prog.writeChecksums

encodingexec.go

Source:encodingexec.go

...68	// Generate copyin instructions that fill in data into pointer arguments.69	w.writeCopyin(c)70	// Generate checksum calculation instructions starting from the last one,71	// since checksum values can depend on values of the latter ones72	w.writeChecksums()73	// Generate the call itself.74	w.write(uint64(c.Meta.ID))75	if c.Ret != nil && len(c.Ret.uses) != 0 {76		if _, ok := w.args[c.Ret]; ok {77			panic("argInfo is already created for return value")78		}79		w.args[c.Ret] = argInfo{Idx: w.copyoutSeq, Ret: true}80		w.write(w.copyoutSeq)81		w.copyoutSeq++82	} else {83		w.write(ExecNoCopyout)84	}85	w.write(uint64(len(c.Args)))86	for _, arg := range c.Args {87		w.writeArg(arg)88	}89	// Generate copyout instructions that persist interesting return values.90	w.writeCopyout(c)91}92type execContext struct {93	target     *Target94	buf        []byte95	eof        bool96	args       map[Arg]argInfo97	copyoutSeq uint6498	// Per-call state cached here to not pass it through all functions.99	csumMap  map[Arg]CsumInfo100	csumUses map[Arg]struct{}101}102type argInfo struct {103	Addr uint64 // physical addr104	Idx  uint64 // copyout instruction index105	Ret  bool106}107func (w *execContext) writeCopyin(c *Call) {108	ForeachArg(c, func(arg Arg, ctx *ArgCtx) {109		if ctx.Base == nil {110			return111		}112		addr := w.target.PhysicalAddr(ctx.Base) + ctx.Offset113		addr -= arg.Type().UnitOffset()114		if w.willBeUsed(arg) {115			w.args[arg] = argInfo{Addr: addr}116		}117		switch arg.(type) {118		case *GroupArg, *UnionArg:119			return120		}121		typ := arg.Type()122		if arg.Dir() == DirOut || IsPad(typ) || (arg.Size() == 0 && !typ.IsBitfield()) {123			return124		}125		w.write(execInstrCopyin)126		w.write(addr)127		w.writeArg(arg)128	})129}130func (w *execContext) willBeUsed(arg Arg) bool {131	if res, ok := arg.(*ResultArg); ok && len(res.uses) != 0 {132		return true133	}134	_, ok1 := w.csumMap[arg]135	_, ok2 := w.csumUses[arg]136	return ok1 || ok2137}138func (w *execContext) writeChecksums() {139	if len(w.csumMap) == 0 {140		return141	}142	csumArgs := make([]Arg, 0, len(w.csumMap))143	for arg := range w.csumMap {144		csumArgs = append(csumArgs, arg)145	}146	sort.Slice(csumArgs, func(i, j int) bool {147		return w.args[csumArgs[i]].Addr < w.args[csumArgs[j]].Addr148	})149	for i := len(csumArgs) - 1; i >= 0; i-- {150		arg := csumArgs[i]151		info := w.csumMap[arg]152		if _, ok := arg.Type().(*CsumType); !ok {...

writeChecksums

Using AI Code Generation

1import (2func main() {3    f, err := os.Create("test.txt")4    if err != nil {5        fmt.Println(err)6    }7    l, err := f.WriteString("Hello World")8    if err != nil {9        fmt.Println(err)10        f.Close()11    }12    fmt.Println(l, "bytes written successfully")13    err = f.Close()14    if err != nil {15        fmt.Println(err)16    }17    f, err = os.OpenFile("test.txt", os.O_RDWR, 0644)18    if err != nil {19        fmt.Println(err)20    }21    h := md5.New()22    if _, err := io.Copy(h, f); err != nil {23        fmt.Println(err)24        f.Close()25    }26    checksum := h.Sum(nil)27    fmt.Println("Checksum calculated:", checksum)28    _, err = f.Seek(0, 0)29    if err != nil {30        fmt.Println(err)31        f.Close()32    }33    _, err = f.Write(checksum)34    if err != nil {35        fmt.Println(err)36        f.Close()37    }38    fmt.Println("Checksum written to file")39    err = f.Close()40    if err != nil {41        fmt.Println(err)42    }43}

writeChecksums

Using AI Code Generation

1import "fmt"2func main() {3    prog := new(Program)4    prog.writeChecksums()5}6import "fmt"7func main() {8    prog := new(Program)9    prog.readChecksums()10}11import "fmt"12func main() {13    prog := new(Program)14    prog.writeChecksums()15}16import "fmt"17func main() {18    prog := new(Program)19    prog.readChecksums()20}21import "fmt"22func main() {23    prog := new(Program)24    prog.writeChecksums()25}26import "fmt"27func main() {28    prog := new(Program)29    prog.readChecksums()30}31import "fmt"32func main() {33    prog := new(Program)34    prog.writeChecksums()35}36import "fmt"37func main() {38    prog := new(Program)39    prog.readChecksums()40}41import "fmt"42func main() {43    prog := new(Program)44    prog.writeChecksums()45}46import "fmt"47func main() {48    prog := new(Program)49    prog.readChecksums()50}51import "fmt"52func main() {53    prog := new(Program)54    prog.writeChecksums()55}56import "fmt"57func main() {58    prog := new(Program)59    prog.readChecksums()60}

writeChecksums

Using AI Code Generation

1import "fmt"2func main() {3   p := new(prog)4   p.writeChecksums()5}6import "fmt"7func main() {8   p := new(prog)9   p.writeChecksums()10}

writeChecksums

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println("Hello World")4}5import "fmt"6func writeChecksums() {7    fmt.Println("Hello World")8}9import "fmt"10func main() {11    fmt.Println("Hello World")12}13import "fmt"14func writeChecksums() {15    fmt.Println("Hello World")16}17import "fmt"18func main() {19    fmt.Println("Hello World")20}21import "fmt"22func writeChecksums() {23    fmt.Println("Hello World")24}25import "fmt"26func main() {27    fmt.Println("Hello World")28}29import "fmt"30func writeChecksums() {31    fmt.Println("Hello World")32}33import "fmt"34func main() {35    fmt.Println("Hello World")36}37import "fmt"38func writeChecksums() {39    fmt.Println("Hello World")40}41import

writeChecksums

Using AI Code Generation

1import (2func main() {3	p := prog{}4	p.writeChecksums()5}6import (7func main() {8	p := prog{}9	p.writeChecksums()10}11import (12func main() {13	p := prog{}14	p.writeChecksums()15}16import (17func main() {18	p := prog{}19	p.writeChecksums()20}21import (22func main() {23	p := prog{}24	p.writeChecksums()25}26import (27func main() {28	p := prog{}29	p.writeChecksums()30}31import (32func main() {33	p := prog{}34	p.writeChecksums()35}36import (37func main() {38	p := prog{}

writeChecksums

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Print("Enter a string: ")4    fmt.Scan(&str)5    fmt.Println("The checksums are: ")6    prog.WriteChecksums(str)7}8import "fmt"9func WriteChecksums(str string) {10    for i := 0; i < len(str); i++ {11        for j := 0; j <= i; j++ {12            sum += int(str[j])13        }14        fmt.Printf("%d ", sum)15    }16}

writeChecksums

Using AI Code Generation

1import (2func main() {3	f, err := os.Create("checksum.txt")4	if err != nil {5		fmt.Println("Error: ", err)6		os.Exit(1)7	}8	defer f.Close()9	w := bufio.NewWriter(f)10	_, err = w.Write([]byte("Checksums: "))11	if err != nil {12		fmt.Println("Error: ", err)13		os.Exit(1)14	}15	f2, err := os.Open("checksum.txt")16	if err != nil {17		fmt.Println("Error: ", err)18		os.Exit(1)19	}20	defer f2.Close()21	r := bufio.NewReader(f2)22	buf := make([]byte, 100)23	_, err = r.Read(buf)24	if err != nil {25		if err != io.EOF {26			fmt.Println("Error: ", err)27			os.Exit(1)28		}29	}

writeChecksums

Using AI Code Generation

1import (2func main() {3    fmt.Println("Main Method")4    p.writeChecksums()5}6import (7type prog struct{}8func (p prog) writeChecksums() {9    fmt.Println("writeChecksums method")10}11import (12type prog struct{}13func (p prog) writeChecksums() {14    fmt.Println("writeChecksums method")15}16import (17type prog struct{}18func (p prog) writeChecksums() {19    fmt.Println("writeChecksums method")20}21import (22type prog struct{}23func (p prog) writeChecksums() {24    fmt.Println("writeChecksums method")25}26import (27type prog struct{}28func (p prog) writeChecksums() {29    fmt.Println("writeChecksums method")30}31import (32type prog struct{}33func (p prog) writeChecksums() {34    fmt.Println("writeChecksums method")35}36import (37type prog struct{}38func (p prog) writeChecksums() {39    fmt.Println("writeChecksums method")40}41import (42type prog struct{}43func (p prog) writeChecksums() {44    fmt.Println("writeChecksums method")45}46import (47type prog struct{}48func (p prog) writeChecksums() {

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