How to use init method of prog Package

Best Syzkaller code snippet using prog.init

create.go

Source:create.go

...68		pkg.values[obj] = g69		pkg.Members[name] = g70	case *types.Func:71		sig := obj.Type().(*types.Signature)72		if sig.Recv() == nil && name == "init" {73			pkg.ninit++74			name = fmt.Sprintf("init#%d", pkg.ninit)75		}76		fn := &Function{77			name:      name,78			object:    obj,79			Signature: sig,80			Pkg:       pkg,81			Prog:      pkg.Prog,82		}83		fn.source = syntax84		fn.initHTML(pkg.printFunc)85		if syntax == nil {86			fn.Synthetic = "loaded from gc object file"87		} else {88			fn.functionBody = new(functionBody)89		}90		pkg.values[obj] = fn91		pkg.Functions = append(pkg.Functions, fn)92		if sig.Recv() == nil {93			pkg.Members[name] = fn // package-level function94		}95	default: // (incl. *types.Package)96		panic("unexpected Object type: " + obj.String())97	}98}99// membersFromDecl populates package pkg with members for each100// typechecker object (var, func, const or type) associated with the101// specified decl.102//103func membersFromDecl(pkg *Package, decl ast.Decl) {104	switch decl := decl.(type) {105	case *ast.GenDecl: // import, const, type or var106		switch decl.Tok {107		case token.CONST:108			for _, spec := range decl.Specs {109				for _, id := range spec.(*ast.ValueSpec).Names {110					if !isBlankIdent(id) {111						memberFromObject(pkg, pkg.info.Defs[id], nil)112					}113				}114			}115		case token.VAR:116			for _, spec := range decl.Specs {117				for _, id := range spec.(*ast.ValueSpec).Names {118					if !isBlankIdent(id) {119						memberFromObject(pkg, pkg.info.Defs[id], spec)120					}121				}122			}123		case token.TYPE:124			for _, spec := range decl.Specs {125				id := spec.(*ast.TypeSpec).Name126				if !isBlankIdent(id) {127					memberFromObject(pkg, pkg.info.Defs[id], nil)128				}129			}130		}131	case *ast.FuncDecl:132		id := decl.Name133		if !isBlankIdent(id) {134			memberFromObject(pkg, pkg.info.Defs[id], decl)135		}136	}137}138// CreatePackage constructs and returns an IR Package from the139// specified type-checked, error-free file ASTs, and populates its140// Members mapping.141//142// importable determines whether this package should be returned by a143// subsequent call to ImportedPackage(pkg.Path()).144//145// The real work of building IR form for each function is not done146// until a subsequent call to Package.Build().147//148func (prog *Program) CreatePackage(pkg *types.Package, files []*ast.File, info *types.Info, importable bool) *Package {149	p := &Package{150		Prog:      prog,151		Members:   make(map[string]Member),152		values:    make(map[types.Object]Value),153		Pkg:       pkg,154		info:      info,  // transient (CREATE and BUILD phases)155		files:     files, // transient (CREATE and BUILD phases)156		printFunc: prog.PrintFunc,157	}158	// Add init() function.159	p.init = &Function{160		name:         "init",161		Signature:    new(types.Signature),162		Synthetic:    "package initializer",163		Pkg:          p,164		Prog:         prog,165		functionBody: new(functionBody),166	}167	p.init.initHTML(prog.PrintFunc)168	p.Members[p.init.name] = p.init169	p.Functions = append(p.Functions, p.init)170	// CREATE phase.171	// Allocate all package members: vars, funcs, consts and types.172	if len(files) > 0 {173		// Go source package.174		for _, file := range files {175			for _, decl := range file.Decls {176				membersFromDecl(p, decl)177			}178		}179	} else {180		// GC-compiled binary package (or "unsafe")181		// No code.182		// No position information.183		scope := p.Pkg.Scope()184		for _, name := range scope.Names() {185			obj := scope.Lookup(name)186			memberFromObject(p, obj, nil)187			if obj, ok := obj.(*types.TypeName); ok {188				if named, ok := obj.Type().(*types.Named); ok {189					for i, n := 0, named.NumMethods(); i < n; i++ {190						memberFromObject(p, named.Method(i), nil)191					}192				}193			}194		}195	}196	// Add initializer guard variable.197	initguard := &Global{198		Pkg:  p,199		name: "init$guard",200		typ:  types.NewPointer(tBool),201	}202	p.Members[initguard.Name()] = initguard203	if prog.mode&GlobalDebug != 0 {204		p.SetDebugMode(true)205	}206	if prog.mode&PrintPackages != 0 {207		printMu.Lock()208		p.WriteTo(os.Stdout)209		printMu.Unlock()210	}211	if importable {212		prog.imported[p.Pkg.Path()] = p213	}214	prog.packages[p.Pkg] = p215	return p216}...

init

Using AI Code Generation

1import (2type Prog struct {3}4func (p Prog) display() {5	fmt.Println(p.i)6	fmt.Println(p.j)7}8func (p *Prog) set(i, j int) {9}10func init() {11	fmt.Println("init method called")12}13func main() {14	p := Prog{}15	p.set(10, 20)16	p.display()17}

init

Using AI Code Generation

1import "fmt"2func init() {3	fmt.Println("init method of prog class")4}5func main() {6	fmt.Println("main method of prog class")7}8func init() {9	fmt.Println("init method of prog class again")10}11import "fmt"12func init() {13	fmt.Println("init method of prog class")14}15func main() {16	fmt.Println("main method of prog class")17}18func init() {19	fmt.Println("init method of prog class again")20}21import "fmt"22func init() {23	fmt.Println("init method of prog class")24}25func main() {26	fmt.Println("main method of prog class")27}28func init() {29	fmt.Println("init method of prog class again")30}31import "fmt"32func init() {33	fmt.Println("init method of prog class")34}35func main() {36	fmt.Println("main method of prog class")37}38func init() {39	fmt.Println("init method of prog class again")40}41import "fmt"42func init() {43	fmt.Println("init method of prog class")44}45func main() {46	fmt.Println("main method of prog class")47}48func init() {49	fmt.Println("init method of prog class again")50}51import "fmt"52func init() {53	fmt.Println("init method of prog class")54}55func main() {56	fmt.Println("main method of prog class")57}58func init()

init

Using AI Code Generation

1import (2type prog struct {3}4func (p prog) init() {5}6func main() {7	p := new(prog)8	p.init()9	fmt.Println(p.name)10	fmt.Println(p.age)11}

init

Using AI Code Generation

1import "fmt"2func main(){3 fmt.Println("main method")4}5func init(){6 fmt.Println("init method")7}

init

Using AI Code Generation

1import (2func init() {3	fmt.Println("init method called")4	c = int(math.Sqrt(float64(a*a + b*b)))5}6func main() {7	fmt.Println("The value of c is ", c)8}

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