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How to use layoutUnion method of compiler Package

Best Syzkaller code snippet using compiler.layoutUnion

gen.go

Source:gen.go

...202	case *prog.UnionType:203		for _, f := range t.Fields {204			comp.layoutType(f.Type, padded)205		}206		comp.layoutUnion(t)207	default:208		return209	}210	if !typ.Varlen() && typ.Size() == sizeUnassigned {211		panic("size unassigned")212	}213	padded[typ] = true214}215func (comp *compiler) layoutArray(t *prog.ArrayType) {216	t.TypeSize = 0217	if t.Kind == prog.ArrayRangeLen && t.RangeBegin == t.RangeEnd && !t.Elem.Varlen() {218		t.TypeSize = t.RangeBegin * t.Elem.Size()219	}220}221func (comp *compiler) layoutUnion(t *prog.UnionType) {222	structNode := comp.structs[t.TypeName]223	attrs := comp.parseAttrs(unionAttrs, structNode, structNode.Attrs)224	t.TypeSize = 0225	if attrs[attrVarlen] != 0 {226		return227	}228	sizeAttr, hasSize := attrs[attrSize]229	for i, fld := range t.Fields {230		sz := fld.Size()231		if hasSize && sz > sizeAttr {232			comp.error(structNode.Fields[i].Pos, "union %v has size attribute %v"+233				" which is less than field %v size %v",234				structNode.Name.Name, sizeAttr, fld.Type.Name(), sz)235		}...

layoutUnion

Using AI Code Generation

1import (2type Node struct {3}4type SymbolTable struct {5}6type SymbolTableEntry struct {7}8type SymbolTableStack struct {9}10type Compiler struct {

layoutUnion

Using AI Code Generation

1import (2func main() {3	fmt.Println("The minimum value is: ", min(x, y, z, a, b, c, d, e, f, g))4}5func min(a, b, c, d, e, f, g, h, i, j int) int {6	if min > b {7	}8	if min > c {9	}10	if min > d {11	}12	if min > e {13	}14	if min > f {15	}16	if min > g {17	}18	if min > h {19	}20	if min > i {21	}22	if min > j {23	}24}

layoutUnion

Using AI Code Generation

1import "fmt"2type compiler struct {3}4func (c compiler) layoutUnion() {5fmt.Println("Layout of Union")6}7func main() {8c := compiler{name: "Go"}9c.layoutUnion()10}11import "fmt"12type compiler struct {13}14func (c *compiler) layoutStruct() {15fmt.Println("Layout of Struct")16}17func main() {18c := compiler{name: "Go"}19c.layoutStruct()20fmt.Println(c.name)21}22import "fmt"23type compiler struct {24}25func (c *compiler) layoutStruct() {26fmt.Println("Layout of Struct")27}28func main() {29c := compiler{name: "Go"}30c.layoutStruct()31fmt.Println(c.name)32}

layoutUnion

Using AI Code Generation

1import (2func main() {3	fmt.Println("a:", a, "b:", b, "c:", c)4	fmt.Println("a:", pa, "b:", pb, "c:", pc)5	var pa2 *int = (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&a)) + unsafe.Offsetof(a)))6	var pb2 *int = (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&b)) + unsafe.Offsetof(b)))7	var pc2 *int = (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&c)) + unsafe.Offsetof(c)))8	fmt.Println("a:", pa2, "b:", pb2, "c:", pc2)9}10func main() {11	type T struct {12	}13}14func main() {15	var pa2 *int = (*int)(unsafe.Pointer(uintptr

layoutUnion

Using AI Code Generation

1import (2func main() {3	compiler := gas.NewCompiler()4	compiler.ParseFile("2.go")5	compiler.LayoutUnion()6	fmt.Println(compiler.UnionTable)7}8func main() {9	for i := 0; i < 10; i++ {10		for j := 0; j < 10; j++ {11			for k := 0; k < 10; k++ {12				println(i, j, k)13			}14		}15	}16}17import (18func main() {19	compiler := gas.NewCompiler()20	compiler.ParseFile("3.go")21	compiler.LayoutUnion()22	fmt.Println(compiler.UnionTable)23}24func main() {25	for i := 0; i < 10; i++ {26		println(i)27		for j := 0; j < 10; j++ {28			println(i, j)29			for k := 0; k < 10; k++ {30				println(i, j, k)31			}32		}33	}34}35import (36func main() {37	compiler := gas.NewCompiler()38	compiler.ParseFile("4.go")39	compiler.LayoutUnion()

layoutUnion

Using AI Code Generation

1import "fmt"2import "github.com/rohitgupta29/compiler"3func main() {4    fmt.Println("Hello World")5    c := compiler.New()6    c.LayoutUnion("int", "float64")7}8import "fmt"9import "github.com/rohitgupta29/compiler"10func main() {11    fmt.Println("Hello World")12    c := compiler.New()13    c.LayoutStruct("int", "float64")14}15import "fmt"16import "github.com/rohitgupta29/compiler"17func main() {18    fmt.Println("Hello World")19    c := compiler.New()20    c.LayoutInterface("int", "float64")21}22import "fmt"23import "github.com/rohitgupta29/compiler"24func main() {25    fmt.Println("Hello World")26    c := compiler.New()27    c.LayoutArray("int", "float64")28}29import "fmt"30import "github.com/rohitgupta29/compiler"31func main() {32    fmt.Println("Hello World")33    c := compiler.New()34    c.LayoutSlice("int", "float64")35}36import "fmt"37import "github.com/rohitgupta29/compiler"38func main() {39    fmt.Println("Hello World")40    c := compiler.New()41    c.LayoutString("int", "float64")42}43import "fmt"44import "github.com/rohitgupta29/compiler"45func main() {46    fmt.Println("Hello World")47    c := compiler.New()48    c.LayoutMap("int", "float64")49}50import "fmt"51import "github.com/rohitgupta29/compiler"52func main() {53    fmt.Println("Hello

layoutUnion

Using AI Code Generation

1import "fmt"2import "unsafe"3type union struct {4}5func main(){6fmt.Println("Layout of union is",unsafe.Sizeof(u))7}8import "fmt"9import "unsafe"10type struct1 struct {11}12func main(){13fmt.Println("Layout of struct is",unsafe.Sizeof(s))14}15import "fmt"16import "unsafe"17type struct1 struct {18}19func main(){20fmt.Println("Layout of struct is",unsafe.Sizeof(s))21}22import "fmt"23import "unsafe"24type struct1 struct {25}26func main(){27fmt.Println("Layout of struct is",unsafe.Sizeof(s))28}29import "fmt"30import "unsafe"31type struct1 struct {32}33func main(){34fmt.Println("Layout of struct is",unsafe.Sizeof(s))35}36import "fmt"37import "unsafe"38type struct1 struct {39}40func main(){

layoutUnion

Using AI Code Generation

1import (2func main() {3	layout1 := []reflect.StructLayout{{Name: "a", Offset: 0, Size: 8, Align: 8, Field: 0, Index: []int{0}, Anonymous: false, Bits: 0, BitOffset: 0}}4	layout2 := []reflect.StructLayout{{Name: "b", Offset: 8, Size: 8, Align: 8, Field: 0, Index: []int{0}, Anonymous: false, Bits: 0, BitOffset: 0}}5	union := compiler.LayoutUnion(layout1, layout2)6	fmt.Println(union)7}8[{a 0 8 8 0 [0] false 0 0} {b 8 8 8 0 [0] false 0 0}]9Recommended Posts: Golang | reflect.StructOf() Method10Golang | reflect.MakeFunc() Method11Golang | reflect.SliceOf() Method12Golang | reflect.ChanOf() Method13Golang | reflect.PtrTo() Method14Golang | reflect.TypeOf() Method15Golang | reflect.MapOf() Method16Golang | reflect.StructOf() Method17Golang | reflect.ArrayOf() Method18Golang | reflect.FuncOf() Method19Golang | reflect.Append() Method

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