How to use checkStructRecursion method of compiler Package

Best Syzkaller code snippet using compiler.checkStructRecursion

check.go

Source:check.go

...342		case *ast.Resource:343			comp.checkResourceRecursion(n)344		case *ast.Struct:345			var path []pathElem346			comp.checkStructRecursion(checked, n, path)347		}348	}349}350func (comp *compiler) checkResourceRecursion(n *ast.Resource) {351	var seen []string352	for n != nil {353		if arrayContains(seen, n.Name.Name) {354			chain := ""355			for _, r := range seen {356				chain += r + "->"357			}358			chain += n.Name.Name359			comp.error(n.Pos, "recursive resource %v", chain)360			return361		}362		seen = append(seen, n.Name.Name)363		n = comp.resources[n.Base.Ident]364	}365}366type pathElem struct {367	Pos    ast.Pos368	Struct string369	Field  string370}371func (comp *compiler) checkStructRecursion(checked map[string]bool, n *ast.Struct, path []pathElem) {372	name := n.Name.Name373	if checked[name] {374		return375	}376	for i, elem := range path {377		if elem.Struct != name {378			continue379		}380		path = path[i:]381		str := ""382		for _, elem := range path {383			str += fmt.Sprintf("%v.%v -> ", elem.Struct, elem.Field)384		}385		str += name386		comp.error(path[0].Pos, "recursive declaration: %v (mark some pointers as opt)", str)387		checked[name] = true388		return389	}390	for _, f := range n.Fields {391		path = append(path, pathElem{392			Pos:    f.Pos,393			Struct: name,394			Field:  f.Name.Name,395		})396		comp.recurseField(checked, f.Type, path)397		path = path[:len(path)-1]398	}399	checked[name] = true400}401func (comp *compiler) recurseField(checked map[string]bool, t *ast.Type, path []pathElem) {402	desc := comp.getTypeDesc(t)403	if desc == typeStruct {404		comp.checkStructRecursion(checked, comp.structs[t.Ident], path)405		return406	}407	_, args, base := comp.getArgsBase(t, "", prog.DirIn, false)408	if desc == typePtr && base.IsOptional {409		return // optional pointers prune recursion410	}411	for i, arg := range args {412		if desc.Args[i].Type == typeArgType {413			comp.recurseField(checked, arg, path)414		}415	}416}417func (comp *compiler) checkStruct(n *ast.Struct) {418	if n.IsUnion {...

checkStructRecursion

Using AI Code Generation

1import "fmt"2type A struct {3}4type B struct {5}6func main() {7 a := A{}8 b := B{}9 fmt.Println(a)10}

checkStructRecursion

Using AI Code Generation

1func main() {2    var s struct {3        b *struct {4            d *struct {5                f *struct {6                    h *struct {7                        j *struct {8                            l *struct {9                                n *struct {10                                    p *struct {11                                        r *struct {12                                            t *struct {13                                                v *struct {14                                                    x *struct {15                                                        z *struct {16                                                            b *struct {17                                                                d *struct {18                                                                    f *struct {19                                                                        h *struct {20                                                                            j *struct {21                                                                                l *struct {22                                                                                    n *struct {23                                                                                        p *struct {24                                                                                            r *struct {25                                                                                                t *struct {26                                                                                                    v *struct {27                                                                                                        x *struct {28                                                                                                            z *struct {29                                                                                                                b *struct {30                                                                                                                    d *struct {31                                                                                                                        f *struct {32                                                                                                                            h *struct {33                                                                                                                                j *struct {34                                                                                                                                    l *struct {35                                                                                                                                        n *struct {36                                                                                                                                            p *struct {37                                                                                                                                                r *struct {38                                                                                                                                                    t *struct {39                                                                                                                                                        v *struct {40                                                                                                                                                            x *struct {41                                                                                                                                                                z *struct {42                                                                                                                                                                    b *struct {43                                                                                                                                                                        d *struct {44                                                                                                                                                                            f *struct {45                                                                                                                                                                                h *struct {46                                                                                                                                                                                    j *struct {47                                                                                                                                                                                        l *struct {48                                                                                                                                                                                            n *struct {49                                                                                                                                                                                                p *struct {50                                                                                                                                                                                                    r *struct {

checkStructRecursion

Using AI Code Generation

1func main() {2    c := compiler{}3    if c.checkStructRecursion("A") {4        fmt.Println("Struct A has recursion")5    } else {6        fmt.Println("Struct A does not have recursion")7    }8}

checkStructRecursion

Using AI Code Generation

1import (2func checkStructRecursion(compiler *ast.CompilationUnit) {3	for _, decl := range compiler.Declarations {4		if decl, ok := decl.(*ast.StructDeclaration); ok {5			if checkStructRecursionHelper(decl) {6				fmt.Println("Struct Recursion found")7			}8		}9	}10}11func checkStructRecursionHelper(decl *ast.StructDeclaration) bool {12	for _, field := range decl.Fields {13		if field, ok := field.(*ast.Field); ok {14			if field.Type, ok := field.Type.(*ast.StructType); ok {15			}16		}17	}18}19func main() {20	fset := token.NewFileSet()21	f, err := parser.ParseFile(fset, "1.go", nil, 0)22	if err != nil {23		fmt.Println(err)24	}25	compiler := ast.NewCompilationUnit(f, fset, types.Config{})26	checkStructRecursion(compiler)27}

checkStructRecursion

Using AI Code Generation

1import "fmt"2type A struct {3}4func main() {5    a := A{1, nil}6    fmt.Println(a)7}8type A struct {9}10type A struct {11}12type A struct {13}14func main() {15    a := A{1, A{2, A{}}}16    fmt.Println(a)17}18main.main()19import "fmt"20type A struct {21}22func main() {23    a := A{1, nil}24    fmt.Println(a)25}26{1 0xc20800a0a0}27import "fmt"28type A struct {29}30func main() {31    a := A{1, nil}32    fmt.Println(a)33}34{1 0xc20800a0a0}35import "fmt"36type A struct {37}38func main() {39    a := A{1, nil

checkStructRecursion

Using AI Code Generation

1func main() {2    c := new(compiler)3    s := new(structType)4    f := new(field)5    s.fields = []*field{f}6    c.checkStructRecursion(s)7}8func main() {9    c := new(compiler)10    s := new(structType)11    f := new(field)12    s.fields = []*field{f}13    s.embedded = []*field{f}14    c.checkStructRecursion(s)15}16func main() {17    c := new(compiler)18    s := new(structType)19    f := new(field)

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