How to use ensureDataElem method of prog Package

Best Syzkaller code snippet using prog.ensureDataElem

any.go

Source:any.go

...157	case *DataArg:158		if arg.Dir() == DirOut {159			pad = arg.Size()160		} else {161			elem := target.ensureDataElem(elems)162			elem.data = append(elem.Data(), arg.Data()...)163		}164	case *GroupArg:165		target.squashGroup(arg, elems)166	default:167		panic("bad arg kind")168	}169	if pad != 0 {170		elem := target.ensureDataElem(elems)171		elem.data = append(elem.Data(), make([]byte, pad)...)172	}173}174func (target *Target) squashConst(arg *ConstArg, elems *[]Arg) {175	if IsPad(arg.Type()) {176		elem := target.ensureDataElem(elems)177		elem.data = append(elem.Data(), make([]byte, arg.Size())...)178		return179	}180	v, bf := target.squashedValue(arg)181	var data []byte182	switch bf {183	case FormatNative:184		for i := uint64(0); i < arg.Size(); i++ {185			data = append(data, byte(v))186			v >>= 8187		}188	case FormatStrDec:189		data = []byte(fmt.Sprintf("%020v", v))190	case FormatStrHex:191		data = []byte(fmt.Sprintf("0x%016x", v))192	case FormatStrOct:193		data = []byte(fmt.Sprintf("%023o", v))194	default:195		panic(fmt.Sprintf("unknown binary format: %v", bf))196	}197	if uint64(len(data)) != arg.Size() {198		panic("squashed value of wrong size")199	}200	elem := target.ensureDataElem(elems)201	elem.data = append(elem.Data(), data...)202}203func (target *Target) squashResult(arg *ResultArg, elems *[]Arg) {204	var typ *ResourceType205	index := -1206	switch arg.Type().Format() {207	case FormatNative, FormatBigEndian:208		switch arg.Size() {209		case 2:210			typ, index = target.any.res16, 1211		case 4:212			typ, index = target.any.res32, 2213		case 8:214			typ, index = target.any.res64, 3215		default:216			panic("bad size")217		}218	case FormatStrDec:219		typ, index = target.any.resdec, 4220	case FormatStrHex:221		typ, index = target.any.reshex, 5222	case FormatStrOct:223		typ, index = target.any.resoct, 6224	default:225		panic("bad")226	}227	arg.ref = typ.ref()228	arg.dir = DirIn229	*elems = append(*elems, MakeUnionArg(target.any.union, DirIn, arg, index))230}231func (target *Target) squashGroup(arg *GroupArg, elems *[]Arg) {232	if typ, ok := arg.Type().(*StructType); ok && typ.OverlayField != 0 {233		panic("squashing out_overlay")234	}235	var bitfield, fieldsSize uint64236	for _, fld := range arg.Inner {237		fieldsSize += fld.Size()238		// Squash bitfields separately.239		if fld.Type().IsBitfield() {240			bfLen := fld.Type().BitfieldLength()241			bfOff := fld.Type().BitfieldOffset()242			// Note: we can have a ResultArg here as well,243			// but it is unsupported at the moment.244			v, bf := target.squashedValue(fld.(*ConstArg))245			if bf != FormatNative {246				panic(fmt.Sprintf("bitfield has bad format %v", bf))247			}248			bitfield |= (v & ((1 << bfLen) - 1)) << bfOff249			if fld.Size() != 0 {250				elem := target.ensureDataElem(elems)251				for i := uint64(0); i < fld.Size(); i++ {252					elem.data = append(elem.Data(), byte(bitfield))253					bitfield >>= 8254				}255				bitfield = 0256			}257			continue258		}259		target.squashPtrImpl(fld, elems)260	}261	// Add padding either due to dynamic alignment or overlay fields.262	if pad := arg.Size() - fieldsSize; pad != 0 {263		elem := target.ensureDataElem(elems)264		elem.data = append(elem.Data(), make([]byte, pad)...)265	}266}267func (target *Target) squashedValue(arg *ConstArg) (uint64, BinaryFormat) {268	typ := arg.Type()269	bf := typ.Format()270	if _, ok := typ.(*CsumType); ok {271		// We can't compute value for the checksum here,272		// but at least leave something recognizable by hints code.273		// TODO: hints code won't recognize this, because it won't find274		// the const in any arg. We either need to put this const as275		// actual csum arg value, or special case it in hints.276		return 0xabcdef1234567890, FormatNative277	}278	// Note: we need a constant value, but it depends on pid for proc.279	v, _ := arg.Value()280	if bf == FormatBigEndian {281		bf = FormatNative282		switch typ.UnitSize() {283		case 2:284			v = uint64(swap16(uint16(v)))285		case 4:286			v = uint64(swap32(uint32(v)))287		case 8:288			v = swap64(v)289		default:290			panic(fmt.Sprintf("bad const size %v", arg.Size()))291		}292	}293	return v, bf294}295func (target *Target) ensureDataElem(elems *[]Arg) *DataArg {296	if len(*elems) == 0 {297		res := MakeDataArg(target.any.blob, DirIn, nil)298		*elems = append(*elems, MakeUnionArg(target.any.union, DirIn, res, 0))299		return res300	}301	res, ok := (*elems)[len(*elems)-1].(*UnionArg).Option.(*DataArg)302	if !ok {303		res = MakeDataArg(target.any.blob, DirIn, nil)304		*elems = append(*elems, MakeUnionArg(target.any.union, DirIn, res, 0))305	}306	return res307}...

ensureDataElem

Using AI Code Generation

1import (2type prog struct {3	data interface{}4}5func (p *prog) ensureDataElem() {6	if p.data == nil {7		p.data = make(map[string]interface{})8	}9	if reflect.ValueOf(p.data).Kind() != reflect.Map {10		panic("p.data is not a map")11	}12}13func main() {14	p := &prog{}15	p.ensureDataElem()16	fmt.Println(p)17}18&{map[]}

ensureDataElem

Using AI Code Generation

1func main() {2    p := prog{}3    p.ensureDataElem()4}5type prog struct {6}7func (p *prog) ensureDataElem() {8    if p.data == nil {9        p.data = make([]byte, 0, 1024)10    }11}12func (p *prog) ensureDataElem() {13    if p.data == nil {14        p.data = make([]byte, 0, 1024)15    }16}17type prog struct {18}19func (p *prog) ensureDataElem() {20    if p.data == nil {21        p.data = make([]byte, 0, 1024)22    }23}24type prog struct {25}26func (p *prog) ensureDataElem() {27    if p.data == nil {28        p.data = make([]byte, 0, 1024)29    }30}31type prog struct {32}33func (p *prog) ensureDataElem() {34    if p.data == nil {35        p.data = make([]byte, 0, 1024)36    }37}38type prog struct {39}40func (p *prog) ensureDataElem() {41    if p.data == nil {42        p.data = make([]byte, 0, 1024)43    }44}45type prog struct {46}47func (p *prog) ensureDataElem() {48    if p.data == nil {49        p.data = make([]byte, 0, 1024)50    }51}52type prog struct {53}54func (p *prog) ensureDataElem() {55    if p.data == nil {56        p.data = make([]byte, 0, 1024)57    }58}59type prog struct {60}61func (p *prog) ensureDataElem() {62    if p.data == nil {63        p.data = make([]byte, 0, 1024)64    }65}

ensureDataElem

Using AI Code Generation

1import (2func main() {3	prog := mylib.Prog{}4	prog.EnsureDataElem(2)5	fmt.Println(prog.Data)6}7type Prog struct {8}9func (p *Prog) EnsureDataElem(i int) {10	p.Data = append(p.Data, i)11}

ensureDataElem

Using AI Code Generation

1import "fmt"2func main() {3    dataElem.ensureDataElem()4    fmt.Println(dataElem)5}6type prog struct {7}8func (p *prog) ensureDataElem() {9    if p.dataElem == nil {10        p.dataElem = make([]int, 0)11    }12}

ensureDataElem

Using AI Code Generation

1import "fmt"2func main() {3    p.ensureDataElem(s1)4    p.ensureDataElem(s2)5    p.ensureDataElem(s3)6    fmt.Println(p.data)7}8import "fmt"9func main() {10    p.ensureDataElem(s1)11    p.ensureDataElem(s2)12    p.ensureDataElem(s3)13    fmt.Println(p.data)14}15import "fmt"16func main() {17    p.ensureDataElem(s1)18    p.ensureDataElem(s2)19    p.ensureDataElem(s3)20    fmt.Println(p.data)21}22import "fmt"23func main() {24    p.ensureDataElem(s1)25    p.ensureDataElem(s2)26    p.ensureDataElem(s3)27    fmt.Println(p.data)28}29import "fmt"30func main() {31    p.ensureDataElem(s1)32    p.ensureDataElem(s2)33    p.ensureDataElem(s3)34    fmt.Println(p

ensureDataElem

Using AI Code Generation

1import (2func main() {3    prog.EnsureDataElem("foo", "bar")4    fmt.Println(prog.DataElem("foo"))5    fmt.Println(prog.DataElem("baz"))6}7import (8func main() {9    prog.EnsureDataElem("foo", "bar")10    fmt.Println(prog.DataElem("foo"))11    fmt.Println(prog.DataElem("baz"))12    fmt.Println(prog.DataElem("foo"))13}14import (15func main() {16    prog.EnsureDataElem("foo", "bar")17    fmt.Println(prog.DataElem("foo"))18    fmt.Println(prog.DataElem("baz"))19    fmt.Println(prog.DataElem("foo"))20    prog.EnsureDataElem("foo", "baz")21    fmt.Println(prog.DataElem("foo"))22}

ensureDataElem

Using AI Code Generation

1prog.ensureDataElem(2, 3, 5);2prog.ensureDataElem(2, 3, 5);3prog.ensureDataElem(2, 3, 5);4prog.ensureDataElem(2, 3, 5);5prog.ensureDataElem(2, 3, 5);6prog.ensureDataElem(2, 3, 5);7prog.ensureDataElem(2, 3, 5);8prog.ensureDataElem(2, 3, 5);9prog.ensureDataElem(2, 3, 5);10prog.ensureDataElem(2, 3, 5);11prog.ensureDataElem(2, 3, 5);12prog.ensureDataElem(2, 3, 5);

ensureDataElem

Using AI Code Generation

1import (2func main() {3	prog := make(map[string]map[string]string)4	prog.ensureDataElem("golang", "map", "map is a data structure")5	fmt.Println(prog)6}7func (p map[string]map[string]string) ensureDataElem(key, subkey, value string) {8	if _, ok := p[key]; !ok {9		p[key] = make(map[string]string)10	}11}12prog.go:7: cannot use prog (type map[string]map[string]string) as type map[string]map[string]string in method value

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