How to use getIntAlignment method of compiler Package

Best Syzkaller code snippet using compiler.getIntAlignment

types.go

Source:types.go Github

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...130 if len(t.Colon) != 0 {131 bitLen = t.Colon[0].Value132 }133 base.TypeSize = size134 base.TypeAlign = getIntAlignment(comp, base)135 return &prog.IntType{136 IntTypeCommon: genIntCommon(base.TypeCommon, bitLen, be),137 Kind: kind,138 RangeBegin: rangeBegin,139 RangeEnd: rangeEnd,140 Align: align,141 }142 },143}144func getIntAlignment(comp *compiler, base prog.IntTypeCommon) uint64 {145 align := base.UnitSize()146 if align == 8 && comp.target.Int64Alignment != 0 {147 align = comp.target.Int64Alignment148 }149 return align150}151var typePtr = &typeDesc{152 Names: []string{"ptr", "ptr64"},153 CanBeArgRet: canBeArg,154 CanBeTypedef: true,155 Args: []namedArg{{Name: "direction", Type: typeArgDir}, {Name: "type", Type: typeArgType}},156 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {157 base.TypeSize = comp.ptrSize158 if t.Ident == "ptr64" {159 base.TypeSize = 8160 }161 base.TypeAlign = getIntAlignment(comp, base)162 return &prog.PtrType{163 TypeCommon: base.TypeCommon,164 Elem: comp.genType(args[1], 0),165 ElemDir: genDir(args[0]),166 }167 },168}169var typeVoid = &typeDesc{170 Names: []string{"void"},171 CantBeOpt: true,172 ZeroSize: func(comp *compiler, t *ast.Type, args []*ast.Type) bool {173 return true174 },175 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {176 base.TypeSize = 0 /​/​ the only type with static size 0177 base.TypeAlign = 1178 return &prog.BufferType{179 TypeCommon: base.TypeCommon,180 Kind: prog.BufferBlobRange,181 RangeBegin: 0,182 RangeEnd: 0,183 }184 },185}186var typeArray = &typeDesc{187 Names: []string{"array"},188 CanBeTypedef: true,189 CantBeOpt: true,190 OptArgs: 1,191 Args: []namedArg{{Name: "type", Type: typeArgType}, {Name: "size", Type: typeArgSizeRange}},192 CheckConsts: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {193 if len(args) > 1 && args[1].Value == 0 && (len(args[1].Colon) == 0 || args[1].Colon[0].Value == 0) {194 comp.error(args[1].Pos, "arrays of size 0 are not supported")195 }196 },197 Varlen: func(comp *compiler, t *ast.Type, args []*ast.Type) bool {198 if comp.isZeroSize(args[0]) {199 return false200 }201 if comp.isVarlen(args[0]) {202 return true203 }204 if len(args) > 1 {205 return len(args[1].Colon) != 0 && args[1].Value != args[1].Colon[0].Value206 }207 return true208 },209 ZeroSize: func(comp *compiler, t *ast.Type, args []*ast.Type) bool {210 return comp.isZeroSize(args[0])211 },212 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {213 elemType := comp.genType(args[0], 0)214 kind, begin, end := prog.ArrayRandLen, uint64(0), uint64(0)215 if len(args) > 1 {216 kind, begin, end = prog.ArrayRangeLen, args[1].Value, args[1].Value217 if len(args[1].Colon) != 0 {218 end = args[1].Colon[0].Value219 }220 }221 if it, ok := elemType.(*prog.IntType); ok && it.Kind == prog.IntPlain && it.TypeSize == 1 {222 /​/​ Special case: buffer is better mutated.223 bufKind := prog.BufferBlobRand224 base.TypeSize = 0225 if kind == prog.ArrayRangeLen {226 bufKind = prog.BufferBlobRange227 if begin == end {228 base.TypeSize = begin * elemType.Size()229 }230 }231 base.TypeAlign = 1232 return &prog.BufferType{233 TypeCommon: base.TypeCommon,234 Kind: bufKind,235 RangeBegin: begin,236 RangeEnd: end,237 }238 }239 /​/​ TypeSize is assigned later in layoutArray.240 base.TypeAlign = elemType.Alignment()241 return &prog.ArrayType{242 TypeCommon: base.TypeCommon,243 Elem: elemType,244 Kind: kind,245 RangeBegin: begin,246 RangeEnd: end,247 }248 },249}250var typeLen = &typeDesc{251 Names: []string{"len", "bytesize", "bytesize2", "bytesize4", "bytesize8", "bitsize", "offsetof"},252 CanBeArgRet: canBeArg,253 CantBeOpt: true,254 NeedBase: true,255 Args: []namedArg{{Name: "len target", Type: typeArgLenTarget}},256 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {257 var bitSize uint64258 var offset bool259 switch t.Ident {260 case "bytesize":261 bitSize = 8262 case "bytesize2", "bytesize4", "bytesize8":263 byteSize, _ := strconv.ParseUint(t.Ident[8:], 10, 8)264 bitSize = byteSize * 8265 case "bitsize":266 bitSize = 1267 case "offsetof":268 bitSize = 8269 offset = true270 }271 path := []string{args[0].Ident}272 for _, col := range args[0].Colon {273 path = append(path, col.Ident)274 }275 base.TypeAlign = getIntAlignment(comp, base)276 return &prog.LenType{277 IntTypeCommon: base,278 Path: path,279 BitSize: bitSize,280 Offset: offset,281 }282 },283}284var typeConst = &typeDesc{285 Names: []string{"const"},286 CanBeArgRet: canBeArg,287 CanBeTypedef: true,288 CantBeOpt: true,289 NeedBase: true,290 Args: []namedArg{{Name: "value", Type: typeArgInt}},291 CheckConsts: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {292 v := args[0].Value293 bitSize := base.TypeBitSize()294 if constOverflowsBase(v, base) {295 comp.error(args[0].Pos, "const val 0x%x does not fit into %v bits", v, bitSize)296 }297 args[0].Value = v & (uint64(1)<<bitSize - 1)298 },299 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {300 base.TypeAlign = getIntAlignment(comp, base)301 return &prog.ConstType{302 IntTypeCommon: base,303 Val: args[0].Value,304 }305 },306}307func constOverflowsBase(v uint64, base prog.IntTypeCommon) bool {308 size := base.TypeBitSize()309 if size == 64 {310 return false311 }312 mask := uint64(1)<<size - 1313 v1 := v & mask314 if int64(v1<<(64-size)) < 0 && int64(v) < 0 {315 v1 |= ^mask316 }317 return v1 != v318}319var typeArgLenTarget = &typeArg{320 Kind: kindIdent,321 MaxColon: 10,322}323var typeFlags = &typeDesc{324 Names: []string{"flags"},325 CanBeArgRet: canBeArg,326 CanBeTypedef: true,327 CantBeOpt: true,328 NeedBase: true,329 Args: []namedArg{{Name: "flags", Type: typeArgFlags}},330 CheckConsts: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {331 name := args[0].Ident332 if name == "xdp_mmap_offsets" && comp.ptrSize == 4 {333 /​/​ TODO(dvyukov): this sucks a lot. It seems that out 32-bit mmap is wrong.334 /​/​ The syscall accepts number of pages as int32, but we pass offset in bytes.335 /​/​ As the result large XDP consts don't fit into the arg.336 return337 }338 f := comp.intFlags[name]339 for _, val := range f.Values {340 if constOverflowsBase(val.Value, base) {341 comp.error(args[0].Pos, "%v %v=0x%x doesn't fit into %v bits",342 name, val.Ident, val.Value, base.TypeBitSize())343 }344 }345 },346 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {347 name := args[0].Ident348 base.TypeName = name349 f := comp.intFlags[name]350 values := genIntArray(f.Values)351 if len(values) == 0 || len(values) == 1 && values[0] == 0 {352 /​/​ We can get this if all values are unsupported consts.353 /​/​ Also generate const[0] if we have only 1 flags value which is 0,354 /​/​ this is the intention in all existing cases (e.g. an enum with types355 /​/​ of something, but there is really only 1 type exists).356 return &prog.ConstType{357 IntTypeCommon: base,358 Val: 0,359 }360 }361 sort.Slice(values, func(i, j int) bool {362 return values[i] < values[j]363 })364 base.TypeAlign = getIntAlignment(comp, base)365 return &prog.FlagsType{366 IntTypeCommon: base,367 Vals: values,368 BitMask: isBitmask(values),369 }370 },371}372func isBitmask(values []uint64) bool {373 if values[0] == 0 {374 /​/​ 0 can't be part of bitmask, this helps to handle important375 /​/​ case like "0, 1" and "0, 1, 2" that would be detected376 /​/​ as bitmask otherwise.377 return false378 }379 var combined uint64380 for _, v := range values {381 if v&combined != 0 {382 return false383 }384 combined |= v385 }386 return true387}388var typeArgFlags = &typeArg{389 Kind: kindIdent,390 Check: func(comp *compiler, t *ast.Type) {391 if comp.intFlags[t.Ident] == nil {392 comp.error(t.Pos, "unknown flags %v", t.Ident)393 return394 }395 },396}397var typeVMA = &typeDesc{398 Names: []string{"vma", "vma64"},399 CanBeArgRet: canBeArg,400 OptArgs: 1,401 Args: []namedArg{{Name: "size range", Type: typeArgSizeRange}},402 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {403 var begin, end uint64404 if len(args) > 0 {405 begin, end = args[0].Value, args[0].Value406 if len(args[0].Colon) != 0 {407 end = args[0].Colon[0].Value408 }409 }410 base.TypeSize = comp.ptrSize411 if t.Ident == "vma64" {412 base.TypeSize = 8413 }414 base.TypeAlign = getIntAlignment(comp, base)415 return &prog.VmaType{416 TypeCommon: base.TypeCommon,417 RangeBegin: begin,418 RangeEnd: end,419 }420 },421}422var typeCsum = &typeDesc{423 Names: []string{"csum"},424 NeedBase: true,425 CantBeOpt: true,426 OptArgs: 1,427 Args: []namedArg{428 {Name: "csum target", Type: typeArgLenTarget},429 {Name: "kind", Type: typeArgCsumType},430 {Name: "proto", Type: typeArgInt},431 },432 Check: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {433 if len(args) > 2 && genCsumKind(args[1]) != prog.CsumPseudo {434 comp.error(args[2].Pos, "only pseudo csum can have proto")435 }436 if len(args[0].Colon) != 0 {437 comp.error(args[0].Colon[0].Pos, "path expressions are not implemented for csum")438 }439 },440 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {441 var proto uint64442 if len(args) > 2 {443 proto = args[2].Value444 }445 base.TypeAlign = getIntAlignment(comp, base)446 return &prog.CsumType{447 IntTypeCommon: base,448 Buf: args[0].Ident,449 Kind: genCsumKind(args[1]),450 Protocol: proto,451 }452 },453}454var typeArgCsumType = &typeArg{455 Kind: kindIdent,456 Names: []string{"inet", "pseudo"},457}458func genCsumKind(t *ast.Type) prog.CsumKind {459 switch t.Ident {460 case "inet":461 return prog.CsumInet462 case "pseudo":463 return prog.CsumPseudo464 default:465 panic(fmt.Sprintf("unknown csum kind %q", t.Ident))466 }467}468var typeProc = &typeDesc{469 Names: []string{"proc"},470 CanBeArgRet: canBeArg,471 CanBeTypedef: true,472 NeedBase: true,473 Args: []namedArg{474 {Name: "range start", Type: typeArgInt},475 {Name: "per-proc values", Type: typeArgInt},476 },477 CheckConsts: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {478 start := args[0].Value479 perProc := args[1].Value480 if perProc == 0 {481 comp.error(args[1].Pos, "proc per-process values must not be 0")482 return483 }484 size := base.TypeSize * 8485 max := uint64(1) << size486 if size == 64 {487 max = ^uint64(0)488 }489 if start >= max {490 comp.error(args[0].Pos, "values starting from %v overflow base type", start)491 } else if perProc > (max-start)/​prog.MaxPids {492 comp.error(args[0].Pos, "values starting from %v with step %v overflow base type for %v procs",493 start, perProc, prog.MaxPids)494 }495 },496 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {497 base.TypeAlign = getIntAlignment(comp, base)498 return &prog.ProcType{499 IntTypeCommon: base,500 ValuesStart: args[0].Value,501 ValuesPerProc: args[1].Value,502 }503 },504}505var typeText = &typeDesc{506 Names: []string{"text"},507 CantBeOpt: true,508 Args: []namedArg{{Name: "kind", Type: typeArgTextType}},509 Varlen: func(comp *compiler, t *ast.Type, args []*ast.Type) bool {510 return true511 },512 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {513 base.TypeSize = 0514 base.TypeAlign = 1515 return &prog.BufferType{516 TypeCommon: base.TypeCommon,517 Kind: prog.BufferText,518 Text: genTextType(args[0]),519 }520 },521}522var typeArgTextType = &typeArg{523 Kind: kindIdent,524 Names: []string{"target", "x86_real", "x86_16", "x86_32", "x86_64", "arm64"},525}526func genTextType(t *ast.Type) prog.TextKind {527 switch t.Ident {528 case "target":529 return prog.TextTarget530 case "x86_real":531 return prog.TextX86Real532 case "x86_16":533 return prog.TextX86bit16534 case "x86_32":535 return prog.TextX86bit32536 case "x86_64":537 return prog.TextX86bit64538 case "arm64":539 return prog.TextArm64540 default:541 panic(fmt.Sprintf("unknown text type %q", t.Ident))542 }543}544const (545 stringnoz = "stringnoz"546)547var typeString = &typeDesc{548 Names: []string{"string", stringnoz},549 CanBeTypedef: true,550 OptArgs: 2,551 Args: []namedArg{552 {Name: "literal or flags", Type: typeArgStringFlags},553 {Name: "size", Type: typeArgInt},554 },555 Check: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {556 if t.Ident == stringnoz && len(args) > 1 {557 comp.error(args[0].Pos, "fixed-size string can't be non-zero-terminated")558 }559 },560 CheckConsts: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {561 if len(args) > 1 {562 size := args[1].Value563 vals := comp.genStrings(t, args)564 for _, s := range vals {565 if uint64(len(s)) > size {566 comp.error(args[0].Pos, "string value %q exceeds buffer length %v",567 s, size)568 }569 }570 }571 },572 Varlen: func(comp *compiler, t *ast.Type, args []*ast.Type) bool {573 return comp.stringSize(t, args) == varlenString574 },575 ZeroSize: func(comp *compiler, t *ast.Type, args []*ast.Type) bool {576 return comp.stringSize(t, args) == 0577 },578 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {579 base.TypeAlign = 1580 if len(args) > 0 && args[0].Ident == "filename" {581 base.TypeName = "filename"582 base.TypeSize = 0583 if len(args) >= 2 {584 base.TypeSize = args[1].Value585 }586 return &prog.BufferType{587 TypeCommon: base.TypeCommon,588 Kind: prog.BufferFilename,589 NoZ: t.Ident == stringnoz,590 }591 }592 subkind := ""593 if len(args) > 0 && args[0].Ident != "" {594 subkind = args[0].Ident595 }596 vals := comp.genStrings(t, args)597 base.TypeSize = comp.stringSize(t, args)598 if base.TypeSize == varlenString {599 base.TypeSize = 0600 }601 return &prog.BufferType{602 TypeCommon: base.TypeCommon,603 Kind: prog.BufferString,604 SubKind: subkind,605 Values: vals,606 NoZ: t.Ident == stringnoz,607 }608 },609}610func (comp *compiler) genStrings(t *ast.Type, args []*ast.Type) []string {611 var vals []string612 if len(args) > 0 {613 if args[0].HasString {614 vals = append(vals, args[0].String)615 } else {616 vals = genStrArray(comp.strFlags[args[0].Ident].Values)617 }618 }619 if t.Ident == stringnoz {620 return vals621 }622 var size uint64623 if len(args) > 1 {624 size = args[1].Value625 }626 for i, s := range vals {627 s += "\x00"628 for uint64(len(s)) < size {629 s += "\x00"630 }631 vals[i] = s632 }633 return vals634}635const varlenString = ^uint64(0)636/​/​ stringSize returns static string size, or varlenString if it is variable length.637func (comp *compiler) stringSize(t *ast.Type, args []*ast.Type) uint64 {638 switch len(args) {639 case 0:640 return varlenString /​/​ a random string641 case 1:642 var z uint64643 if t.Ident == "string" {644 z = 1645 }646 if args[0].HasString {647 return uint64(len(args[0].String)) + z /​/​ string constant648 }649 size := varlenString650 for _, s := range comp.strFlags[args[0].Ident].Values {651 s1 := uint64(len(s.Value)) + z652 if size != varlenString && size != s1 {653 return varlenString /​/​ strings of different lengths654 }655 size = s1656 }657 return size /​/​ all strings have the same length658 case 2:659 return args[1].Value /​/​ have explicit length660 default:661 panic("too many string args")662 }663}664var typeArgStringFlags = &typeArg{665 Check: func(comp *compiler, t *ast.Type) {666 if !t.HasString && t.Ident == "" {667 comp.error(t.Pos, "unexpected int %v, string arg must be a string literal or string flags", t.Value)668 return669 }670 if t.Ident != "" && comp.strFlags[t.Ident] == nil {671 comp.error(t.Pos, "unknown string flags %v", t.Ident)672 return673 }674 },675}676var typeFmt = &typeDesc{677 Names: []string{"fmt"},678 CanBeTypedef: true,679 CantBeOpt: true,680 Args: []namedArg{681 {Name: "format", Type: typeFmtFormat},682 {Name: "value", Type: typeArgType, IsArg: true},683 },684 Check: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) {685 desc, _, _ := comp.getArgsBase(args[1], true)686 switch desc {687 case typeResource, typeInt, typeLen, typeFlags, typeProc:688 default:689 comp.error(t.Pos, "bad fmt value %v, expect an integer", args[1].Ident)690 return691 }692 },693 Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {694 var format prog.BinaryFormat695 var size uint64696 switch args[0].Ident {697 case "dec":698 format = prog.FormatStrDec699 size = 20700 case "hex":701 format = prog.FormatStrHex702 size = 18703 case "oct":704 format = prog.FormatStrOct705 size = 23706 }707 typ := comp.genType(args[1], comp.ptrSize)708 switch t := typ.(type) {709 case *prog.ResourceType:710 t.ArgFormat = format711 t.TypeSize = size712 t.TypeAlign = 1713 case *prog.IntType:714 t.ArgFormat = format715 t.TypeSize = size716 t.TypeAlign = 1717 case *prog.LenType:718 t.ArgFormat = format719 t.TypeSize = size720 t.TypeAlign = 1721 case *prog.FlagsType:722 t.ArgFormat = format723 t.TypeSize = size724 t.TypeAlign = 1725 case *prog.ProcType:726 t.ArgFormat = format727 t.TypeSize = size728 t.TypeAlign = 1729 case *prog.ConstType:730 /​/​ We don't allow fmt[const] directly, but flags with only 1 value731 /​/​ are transformed to ConstType.732 t.ArgFormat = format733 t.TypeSize = size734 t.TypeAlign = 1735 default:736 panic(fmt.Sprintf("unexpected type: %#v", typ))737 }738 return typ739 },740}741var typeFmtFormat = &typeArg{742 Names: []string{"dec", "hex", "oct"},743 Kind: kindIdent,744}745/​/​ typeArgType is used as placeholder for any type (e.g. ptr target type).746var typeArgType = &typeArg{}747var typeResource = &typeDesc{748 /​/​ No Names, but getTypeDesc knows how to match it.749 CanBeArgRet: canBeArgRet,750 CanBeResourceBase: func(comp *compiler, t *ast.Type) bool {751 return true752 },753 /​/​ Gen is assigned below to avoid initialization loop.754}755func init() {756 typeResource.Gen = func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {757 /​/​ Find and generate base type to get its size.758 var baseType *ast.Type759 for r := comp.resources[t.Ident]; r != nil; {760 baseType = r.Base761 r = comp.resources[r.Base.Ident]762 }763 baseProgType := comp.genType(baseType, 0)764 base.TypeSize = baseProgType.Size()765 base.TypeAlign = getIntAlignment(comp, base)766 return &prog.ResourceType{767 TypeCommon: base.TypeCommon,768 ArgFormat: baseProgType.Format(),769 }770 }771}772var typeStruct = &typeDesc{773 /​/​ No Names, but getTypeDesc knows how to match it.774 CantBeOpt: true,775 CanBeTypedef: true,776 /​/​ Varlen/​Gen are assigned below due to initialization cycle.777}778func init() {779 typeStruct.CanBeArgRet = func(comp *compiler, t *ast.Type) (bool, bool) {...

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getIntAlignment

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1import (2func main() {3 fmt.Println("Hello, playground")4 fmt.Println(getIntAlignment())5}6import (7func main() {8 fmt.Println("Hello, playground")9 fmt.Println(getIntAlignment())10}11import (12func main() {13 fmt.Println("Hello, playground")14 fmt.Println(getIntAlignment())15}16import (17func main() {18 fmt.Println("Hello, playground")19 fmt.Println(getIntAlignment())20}21import (22func main() {23 fmt.Println("Hello, playground")24 fmt.Println(getIntAlignment())25}26import (27func main() {28 fmt.Println("Hello, playground")29 fmt.Println(getIntAlignment())30}31import (32func main() {33 fmt.Println("Hello, playground")34 fmt.Println(getIntAlignment())35}36import (37func main() {38 fmt.Println("Hello, playground")39 fmt.Println(getIntAlignment())40}41import (42func main() {43 fmt.Println("Hello, playground")44 fmt.Println(getIntAlignment())45}46import (47func main() {48 fmt.Println("Hello, playground")49 fmt.Println(getIntAlignment())50}51import (52func main() {53 fmt.Println("

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getIntAlignment

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1import "fmt"2type compiler struct {3}4func main() {5 fmt.Println("Alignment of int is", c.getIntAlignment())6}7func (c compiler) getIntAlignment() int {8 return int(uintptr(unsafe.Pointer(&i)) % uintptr(unsafe.Sizeof(i)))9}10import "fmt"11type compiler struct {12}13func main() {14 fmt.Println("Alignment of float is", c.getFloatAlignment())15}16func (c compiler) getFloatAlignment() int {17 return int(uintptr(unsafe.Pointer(&f)) % uintptr(unsafe.Sizeof(f)))18}19import "fmt"20type compiler struct {21}22func main() {23 fmt.Println("Alignment of string is", c.getStringAlignment())24}25func (c compiler) getStringAlignment() int {26 return int(uintptr(unsafe.Pointer(&s)) % uintptr(unsafe.Sizeof(s)))27}28import "fmt"29type compiler struct {30}31func main() {32 fmt.Println("Alignment of slice is", c.getSliceAlignment())33}34func (c compiler) getSliceAlignment() int {35 return int(uintptr(unsafe.Pointer(&s)) % uintptr(unsafe.Sizeof(s)))36}37import "fmt"38type compiler struct {39}40func main() {41 fmt.Println("Alignment of map is", c.getMapAlignment())42}43func (c compiler) getMapAlignment() int {44 return int(uintptr(unsafe.Pointer(&m)) % uintptr(unsafe.Sizeof(m)))45}46import "fmt"47type compiler struct {48}49func main() {50 fmt.Println("Alignment of struct is", c.getStructAlignment())51}52func (c compiler) getStructAlignment() int

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1func main() {2 fmt.Println("Hello, playground")3 fmt.Println("Alignment of int is", getIntAlignment(a))4 fmt.Println("Alignment of int32 is", getIntAlignment(b))5 fmt.Println("Alignment of int64 is", getIntAlignment(c))6 fmt.Println("Alignment of float32 is", getIntAlignment(d))7 fmt.Println("Alignment of float64 is", getIntAlignment(e))8 fmt.Println("Alignment of string is", getIntAlignment(f))9 fmt.Println("Alignment of bool is", getIntAlignment(g))10 fmt.Println("Alignment of int8 is", getIntAlignment(h))11 fmt.Println("Alignment of int16 is", getIntAlignment(i))12 fmt.Println("Alignment of uint is", getIntAlignment(j))13 fmt.Println("Alignment of uint8 is", getIntAlignment(k))14 fmt.Println("Alignment of uint16 is", getIntAlignment(l))15 fmt.Println("Alignment of uint32 is", getIntAlignment(m))16 fmt.Println("Alignment of uint64 is", getIntAlignment(n))17 fmt.Println("Alignment of uintptr is", getIntAlignment(o))18 fmt.Println("Alignment of rune is", getIntAlignment(p))19 fmt.Println("Alignment of byte is", getIntAlignment(q))20}

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getIntAlignment

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1import "fmt"2func main() {3 fmt.Println("Alignment of int type is: ", getIntAlignment())4}5import "fmt"6func main() {7 fmt.Println("Alignment of int type is: ", getIntAlignment())8}9import "fmt"10func main() {11 fmt.Println("Alignment of int type is: ", getIntAlignment())12}13import "fmt"14func main() {15 fmt.Println("Alignment of int type is: ", getIntAlignment())16}17import "fmt"18func main() {19 fmt.Println("Alignment of int type is: ", getIntAlignment())20}21import "fmt"22func main() {23 fmt.Println("Alignment of int type is: ", getIntAlignment())24}25import "fmt"26func main() {27 fmt.Println("Alignment of int type is: ", getIntAlignment())28}29import "fmt"30func main() {31 fmt.Println("Alignment of int type is: ", getIntAlignment())32}33import "fmt"34func main() {35 fmt.Println("Alignment of int type is: ", getIntAlignment())36}37import "fmt"38func main() {39 fmt.Println("Alignment of int type is: ", getIntAlignment())40}41import "fmt"42func main() {43 fmt.Println("Alignment of int type is: ", getIntAlignment())44}

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getIntAlignment

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1import "fmt"2func main(){3fmt.Println("Alignment of int type is: ", compiler.getIntAlignment())4}5import "fmt"6func main(){7fmt.Println("Alignment of float type is: ", compiler.getFloatAlignment())8}9import "fmt"10func main(){11fmt.Println("Alignment of double type is: ", compiler.getDoubleAlignment())12}13import "fmt"14func main(){15fmt.Println("Alignment of long type is: ", compiler.getLongAlignment())16}17import "fmt"18func main(){19fmt.Println("Alignment of pointer type is: ", compiler.getPointerAlignment())20}21import "fmt"22func main(){23fmt.Println("Alignment of short type is: ", compiler.getShortAlignment())24}25import "fmt"26type Struct1 struct {27}28func main(){29fmt.Println("Alignment of struct type is: ", compiler.getStructAlignment(Struct1{}))30}31import "fmt"32type Struct1 struct {33}34type Struct2 struct {35}36func main(){37fmt.Println("Alignment of struct type is: ", compiler.getStructAlignment(Struct1{}))38fmt.Println("Alignment of struct type is: ", compiler.getStructAlignment(Struct2{}))39}

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1func main() {2 fmt.Println(compiler.getIntAlignment(x, y, z))3}4func main() {5 fmt.Println(compiler.getIntAlignment(x, y, z))6}7func main() {8 fmt.Println(compiler.getIntAlignment(x, y, z))9}10func main() {11 fmt.Println(compiler.getIntAlignment(x, y, z))12}13func main() {14 fmt.Println(compiler.getIntAlignment(x, y, z))15}16func main() {17 fmt.Println(compiler.getIntAlignment(x, y, z))18}19func main() {20 fmt.Println(compiler.getIntAlignment(x, y, z))21}22func main() {23 fmt.Println(compiler.getIntAlignment(x, y, z))24}25func main() {26 fmt.Println(compiler.getIntAlignment(x, y, z))27}28func main()

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getIntAlignment

Using AI Code Generation

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1import "fmt"2func main() {3 fmt.Println(unsafe.Sizeof(10))4}5Example 2: Sizeof() function with float64 data type6import "fmt"7func main() {8 fmt.Println(unsafe.Sizeof(10.5))9}10Example 3: Sizeof() function with struct data type11import "fmt"12type person struct {13}14func main() {15 fmt.Println(unsafe.Sizeof(person{}))16}17Recommended Posts: Sizeof() function in C++18Sizeof() function in C19Sizeof(

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