How to use checkConstructors method of compiler Package

Best Syzkaller code snippet using compiler.checkConstructors

check.go

Source:check.go

...20	}21	comp.checkUsed()22	comp.checkRecursion()23	comp.checkLenTargets()24	comp.checkConstructors()25	comp.checkVarlens()26}27func (comp *compiler) checkNames() {28	calls := make(map[string]*ast.Call)29	for _, decl := range comp.desc.Nodes {30		switch decl.(type) {31		case *ast.Resource, *ast.Struct:32			pos, typ, name := decl.Info()33			if reservedName[name] {34				comp.error(pos, "%v uses reserved name %v", typ, name)35				continue36			}37			if builtinTypes[name] != nil {38				comp.error(pos, "%v name %v conflicts with builtin type", typ, name)39				continue40			}41			if prev := comp.resources[name]; prev != nil {42				comp.error(pos, "type %v redeclared, previously declared as resource at %v",43					name, prev.Pos)44				continue45			}46			if prev := comp.structs[name]; prev != nil {47				_, typ, _ := prev.Info()48				comp.error(pos, "type %v redeclared, previously declared as %v at %v",49					name, typ, prev.Pos)50				continue51			}52			if res, ok := decl.(*ast.Resource); ok {53				comp.resources[name] = res54			} else if str, ok := decl.(*ast.Struct); ok {55				comp.structs[name] = str56			}57		case *ast.IntFlags:58			n := decl.(*ast.IntFlags)59			name := n.Name.Name60			if reservedName[name] {61				comp.error(n.Pos, "flags uses reserved name %v", name)62				continue63			}64			if prev := comp.intFlags[name]; prev != nil {65				comp.error(n.Pos, "flags %v redeclared, previously declared at %v",66					name, prev.Pos)67				continue68			}69			comp.intFlags[name] = n70		case *ast.StrFlags:71			n := decl.(*ast.StrFlags)72			name := n.Name.Name73			if reservedName[name] {74				comp.error(n.Pos, "string flags uses reserved name %v", name)75				continue76			}77			if prev := comp.strFlags[name]; prev != nil {78				comp.error(n.Pos, "string flags %v redeclared, previously declared at %v",79					name, prev.Pos)80				continue81			}82			comp.strFlags[name] = n83		case *ast.Call:84			c := decl.(*ast.Call)85			name := c.Name.Name86			if prev := calls[name]; prev != nil {87				comp.error(c.Pos, "syscall %v redeclared, previously declared at %v",88					name, prev.Pos)89			}90			calls[name] = c91		}92	}93}94func (comp *compiler) checkFields() {95	const maxArgs = 9 // executor does not support more96	for _, decl := range comp.desc.Nodes {97		switch n := decl.(type) {98		case *ast.Struct:99			_, typ, name := n.Info()100			fields := make(map[string]bool)101			for _, f := range n.Fields {102				fn := f.Name.Name103				if fn == "parent" {104					comp.error(f.Pos, "reserved field name %v in %v %v", fn, typ, name)105				}106				if fields[fn] {107					comp.error(f.Pos, "duplicate field %v in %v %v", fn, typ, name)108				}109				fields[fn] = true110			}111			if !n.IsUnion && len(n.Fields) < 1 {112				comp.error(n.Pos, "struct %v has no fields, need at least 1 field", name)113			}114			if n.IsUnion && len(n.Fields) < 2 {115				comp.error(n.Pos, "union %v has only %v field, need at least 2 fields",116					name, len(n.Fields))117			}118		case *ast.Call:119			name := n.Name.Name120			args := make(map[string]bool)121			for _, a := range n.Args {122				an := a.Name.Name123				if an == "parent" {124					comp.error(a.Pos, "reserved argument name %v in syscall %v",125						an, name)126				}127				if args[an] {128					comp.error(a.Pos, "duplicate argument %v in syscall %v",129						an, name)130				}131				args[an] = true132			}133			if len(n.Args) > maxArgs {134				comp.error(n.Pos, "syscall %v has %v arguments, allowed maximum is %v",135					name, len(n.Args), maxArgs)136			}137		}138	}139}140func (comp *compiler) checkTypes() {141	for _, decl := range comp.desc.Nodes {142		switch n := decl.(type) {143		case *ast.Resource:144			comp.checkType(n.Base, false, false, false, true)145		case *ast.Struct:146			for _, f := range n.Fields {147				comp.checkType(f.Type, false, false, !n.IsUnion, false)148			}149			comp.checkStruct(n)150		case *ast.Call:151			for _, a := range n.Args {152				comp.checkType(a.Type, true, false, false, false)153			}154			if n.Ret != nil {155				comp.checkType(n.Ret, true, true, false, false)156			}157		}158	}159}160func (comp *compiler) checkLenTargets() {161	for _, decl := range comp.desc.Nodes {162		switch n := decl.(type) {163		case *ast.Call:164			for _, arg := range n.Args {165				comp.checkLenType(arg.Type, arg.Name.Name, n.Args, nil, make(map[string]bool), true)166			}167		}168	}169}170func (comp *compiler) checkLenType(t *ast.Type, name string, fields []*ast.Field,171	parents []*ast.Struct, checked map[string]bool, isArg bool) {172	desc := comp.getTypeDesc(t)173	if desc == typeStruct {174		s := comp.structs[t.Ident]175		// Prune recursion, can happen even on correct tree via opt pointers.176		if checked[s.Name.Name] {177			return178		}179		checked[s.Name.Name] = true180		parents = append(parents, s)181		for _, fld := range s.Fields {182			comp.checkLenType(fld.Type, fld.Name.Name, s.Fields, parents, checked, false)183		}184		return185	}186	_, args, _ := comp.getArgsBase(t, "", prog.DirIn, isArg)187	for i, arg := range args {188		argDesc := desc.Args[i]189		if argDesc.Type == typeArgLenTarget {190			comp.checkLenTarget(t, name, arg.Ident, fields, parents)191		} else if argDesc.Type == typeArgType {192			comp.checkLenType(arg, name, fields, parents, checked, false)193		}194	}195}196func (comp *compiler) checkLenTarget(t *ast.Type, name, target string, fields []*ast.Field, parents []*ast.Struct) {197	if target == name {198		comp.error(t.Pos, "%v target %v refer to itself", t.Ident, target)199		return200	}201	if target == "parent" {202		if len(parents) == 0 {203			comp.error(t.Pos, "%v target %v does not exist", t.Ident, target)204		}205		return206	}207	for _, fld := range fields {208		if target != fld.Name.Name {209			continue210		}211		if fld.Type == t {212			comp.error(t.Pos, "%v target %v refer to itself", t.Ident, target)213		}214		return215	}216	for _, parent := range parents {217		if target == parent.Name.Name {218			return219		}220	}221	comp.error(t.Pos, "%v target %v does not exist", t.Ident, target)222}223func (comp *compiler) checkUsed() {224	for _, decl := range comp.desc.Nodes {225		switch n := decl.(type) {226		case *ast.Call:227			if n.NR == ^uint64(0) {228				break229			}230			for _, arg := range n.Args {231				comp.checkUsedType(arg.Type, true)232			}233			if n.Ret != nil {234				comp.checkUsedType(n.Ret, true)235			}236		}237	}238}239func (comp *compiler) checkUsedType(t *ast.Type, isArg bool) {240	if comp.used[t.Ident] {241		return242	}243	desc := comp.getTypeDesc(t)244	if desc == typeResource {245		r := comp.resources[t.Ident]246		for r != nil && !comp.used[r.Name.Name] {247			comp.used[r.Name.Name] = true248			r = comp.resources[r.Base.Ident]249		}250		return251	}252	if desc == typeStruct {253		comp.used[t.Ident] = true254		s := comp.structs[t.Ident]255		for _, fld := range s.Fields {256			comp.checkUsedType(fld.Type, false)257		}258		return259	}260	_, args, _ := comp.getArgsBase(t, "", prog.DirIn, isArg)261	for i, arg := range args {262		if desc.Args[i].Type == typeArgType {263			comp.checkUsedType(arg, false)264		}265	}266}267type structDir struct {268	Struct string269	Dir    prog.Dir270}271func (comp *compiler) checkConstructors() {272	ctors := make(map[string]bool) // resources for which we have ctors273	checked := make(map[structDir]bool)274	for _, decl := range comp.desc.Nodes {275		switch n := decl.(type) {276		case *ast.Call:277			for _, arg := range n.Args {278				comp.checkTypeCtors(arg.Type, prog.DirIn, true, ctors, checked)279			}280			if n.Ret != nil {281				comp.checkTypeCtors(n.Ret, prog.DirOut, true, ctors, checked)282			}283		}284	}285	for _, decl := range comp.desc.Nodes {...

checkConstructors

Using AI Code Generation

1import (2func main() {3	node, err := parser.ParseFile(fset, "1.go", nil, parser.ParseComments)4	if err != nil {5		fmt.Println(err)6	}7	fmt.Println(node)8	ast.Inspect(node, func(n ast.Node) bool {9		switch x := n.(type) {10			fmt.Println(x.Name)11			fmt.Println(x.Value)12		}13	})14}15import (16func main() {17	node, err := parser.ParseFile(fset, "1.go", nil, parser.ParseComments)18	if err != nil {19 {20		fmt.Println(err)21	}22	fmt.Println(node)23	ast.Inspect(node, func(n ast.Node) bool {24		switch x := n.(type) {25			fmt.Println(x.Name)26			fmt.Println(x.Value)27		}28	})29}30import (31func main() {

checkConstructors

Using AI Code Generation

1import (2type A struct {3}4type B struct {5}6type C struct {7}8type D struct {9}10func main() {11	d := D{}12	checkConstructors(d)13}14func checkConstructors(d D) {15	dType := reflect.TypeOf(d)16	fmt.Println(dType)17	for i := 0; i < dType.NumField(); i++ {18		field := dType.Field(i)19		fmt.Println(field.Name, field.Type)20	}21}22In this program, we are creating a struct D which is composed of struct B and struct C. Struct B and struct C are composed of struct A. We are using the checkConstructors method to print the name and type of all the fields of struct D. In the checkConstructors method, we are using reflect.TypeOf(d) method to get the type of struct D. The reflect.TypeOf(d) method returns the type of struct D which is D. We are using the NumField method of the type of struct D to get the number of fields of struct D. The NumField method returns the number of fields of struct D which is 8. We are using a for loop to iterate through all the fields of struct D. In each iteration, we are using the Field method of the type of struct D to get the field at the current index. The Field method returns a struct Field which contains the name and type of the field. We are printing the name and type of the field. In the first iteration, the name of the field is B and the type of the field is main.B. In the second iteration, the name of the field is A and the type of the field is main.A. In the third iteration, the name of the field is A1 and the type of the field is int. In the fourth iteration, the name of the field is A2 and the type of the field is string. In the fifth

checkConstructors

Using AI Code Generation

1import "fmt"2type compiler struct {3}4func (c compiler) checkConstructors() {5    fmt.Println("Name: ", c.name)6    fmt.Println("Version: ", c.version)7    fmt.Println("Release Date: ", c.releaseDate)8}9func main() {10    c := compiler{"Go", "1.10", "2018"}11    c.checkConstructors()12}13import "fmt"14type compiler struct {15}16func main() {17    c := new(compiler)18    fmt.Println("Name: ", c.name)19    fmt.Println("Version: ", c.version)20    fmt.Println("Release Date: ", c.releaseDate)21}22import "fmt"23type compiler struct {24}25func main() {26    c := &compiler{"Go", "1.10", "2018"}27    fmt.Println("Name: ", c.name)28    fmt.Println("Version: ", c.version)29    fmt.Println("Release Date: ", c.releaseDate)30}31import "fmt"32type compiler struct {33}

checkConstructors

Using AI Code Generation

1import "fmt"2import "reflect"3type A struct {4}5type B struct {6}7func main() {8    a := A{23, "skidoo"}9    b := B{23, "skidoo"}10    fmt.Println("a==b?", a == b)11    fmt.Println("a Type:", reflect.TypeOf(a))12    fmt.Println("b Type:", reflect.TypeOf(b))13}

checkConstructors

Using AI Code Generation

1import (2type compiler struct {3}4func main() {5    compilers := make([]compiler, 0)6    compilers = append(compilers, compiler{"gcc", "4.8.4", "/usr/bin/gcc", true})7    compilers = append(compilers, compiler{"g++", "4.8.4", "/usr/bin/g++", true})8    compilers = append(compilers, compiler{"java", "1.8.0_45", "/usr/bin/java", true})9    compilers = append(compilers, compiler{"javac", "1.8.0_45", "/usr/bin/javac", true})10    compilers = append(compilers, compiler{"python", "2.7.6", "/usr/bin/python", true})11    compilers = append(compilers, compiler{"python3", "3.4.3", "/usr/bin/python3", true})12    compilers = append(compilers, compiler{"python2.7", "2.7.6", "/usr/bin/python2.7", true})13    compilers = append(compilers, compiler{"python3.4", "3.4.3", "/usr/bin/python3.4", true})14    compilers = append(compilers, compiler{"bash", "4.3.11", "/bin/bash", true})15    compilers = append(compilers, compiler{"perl", "5.18.2", "/usr/bin/perl", true})16    compilers = append(compilers, compiler{"php", "5.5.9-1ubuntu4.14", "/usr/bin/php", true})17    compilers = append(compilers, compiler{"ruby", "1.9.3p484", "/usr/bin/ruby", true})18    compilers = append(compilers, compiler{"node", "v0.10.25", "/usr/bin/node", true})19    compilers = append(compilers, compiler{"nodejs", "v0.10.25", "/usr/bin/nodejs", true})20    compilers = append(compilers, compiler{"go", "go1.4.2", "/usr/bin/go", true})21    for _, compiler := range compilers {22        compiler.checkConstructors()23    }24}25func (c

checkConstructors

Using AI Code Generation

1import (2func main() {3    myCompiler.checkConstructors()4}5import (6func main() {7    myCompiler.checkConstructors()8}9import (10func main() {11    myCompiler.checkConstructors()12}13import (14func main() {15    myCompiler.checkConstructors()16}17import (18func main() {19    myCompiler.checkConstructors()20}21import (22func main() {23    myCompiler.checkConstructors()24}25import (26func main() {27    myCompiler.checkConstructors()28}29import (30func main() {31    myCompiler.checkConstructors()32}33import (34func main() {

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