How to use typecheck method of compiler Package

Best Syzkaller code snippet using compiler.typecheck

obj.go

Source:obj.go

...8	"cmd/compile/internal/noder"9	"cmd/compile/internal/objw"10	"cmd/compile/internal/reflectdata"11	"cmd/compile/internal/staticdata"12	"cmd/compile/internal/typecheck"13	"cmd/compile/internal/types"14	"cmd/internal/archive"15	"cmd/internal/bio"16	"cmd/internal/obj"17	"cmd/internal/objabi"18	"encoding/json"19	"fmt"20)21// These modes say which kind of object file to generate.22// The default use of the toolchain is to set both bits,23// generating a combined compiler+linker object, one that24// serves to describe the package to both the compiler and the linker.25// In fact the compiler and linker read nearly disjoint sections of26// that file, though, so in a distributed build setting it can be more27// efficient to split the output into two files, supplying the compiler28// object only to future compilations and the linker object only to29// future links.30//31// By default a combined object is written, but if -linkobj is specified32// on the command line then the default -o output is a compiler object33// and the -linkobj output is a linker object.34const (35	modeCompilerObj = 1 << iota36	modeLinkerObj37)38func dumpobj() {39	if base.Flag.LinkObj == "" {40		dumpobj1(base.Flag.LowerO, modeCompilerObj|modeLinkerObj)41		return42	}43	dumpobj1(base.Flag.LowerO, modeCompilerObj)44	dumpobj1(base.Flag.LinkObj, modeLinkerObj)45}46func dumpobj1(outfile string, mode int) {47	bout, err := bio.Create(outfile)48	if err != nil {49		base.FlushErrors()50		fmt.Printf("can't create %s: %v\n", outfile, err)51		base.ErrorExit()52	}53	defer bout.Close()54	bout.WriteString("!<arch>\n")55	if mode&modeCompilerObj != 0 {56		start := startArchiveEntry(bout)57		dumpCompilerObj(bout)58		finishArchiveEntry(bout, start, "__.PKGDEF")59	}60	if mode&modeLinkerObj != 0 {61		start := startArchiveEntry(bout)62		dumpLinkerObj(bout)63		finishArchiveEntry(bout, start, "_go_.o")64	}65}66func printObjHeader(bout *bio.Writer) {67	bout.WriteString(objabi.HeaderString())68	if base.Flag.BuildID != "" {69		fmt.Fprintf(bout, "build id %q\n", base.Flag.BuildID)70	}71	if types.LocalPkg.Name == "main" {72		fmt.Fprintf(bout, "main\n")73	}74	fmt.Fprintf(bout, "\n") // header ends with blank line75}76func startArchiveEntry(bout *bio.Writer) int64 {77	var arhdr [archive.HeaderSize]byte78	bout.Write(arhdr[:])79	return bout.Offset()80}81func finishArchiveEntry(bout *bio.Writer, start int64, name string) {82	bout.Flush()83	size := bout.Offset() - start84	if size&1 != 0 {85		bout.WriteByte(0)86	}87	bout.MustSeek(start-archive.HeaderSize, 0)88	var arhdr [archive.HeaderSize]byte89	archive.FormatHeader(arhdr[:], name, size)90	bout.Write(arhdr[:])91	bout.Flush()92	bout.MustSeek(start+size+(size&1), 0)93}94func dumpCompilerObj(bout *bio.Writer) {95	printObjHeader(bout)96	noder.WriteExports(bout)97}98func dumpdata() {99	numExterns := len(typecheck.Target.Externs)100	numDecls := len(typecheck.Target.Decls)101	dumpglobls(typecheck.Target.Externs)102	reflectdata.CollectPTabs()103	numExports := len(typecheck.Target.Exports)104	addsignats(typecheck.Target.Externs)105	reflectdata.WriteRuntimeTypes()106	reflectdata.WriteTabs()107	numPTabs := reflectdata.CountPTabs()108	reflectdata.WriteImportStrings()109	reflectdata.WriteBasicTypes()110	dumpembeds()111	// Calls to WriteRuntimeTypes can generate functions,112	// like method wrappers and hash and equality routines.113	// Compile any generated functions, process any new resulting types, repeat.114	// This can't loop forever, because there is no way to generate an infinite115	// number of types in a finite amount of code.116	// In the typical case, we loop 0 or 1 times.117	// It was not until issue 24761 that we found any code that required a loop at all.118	for {119		for i := numDecls; i < len(typecheck.Target.Decls); i++ {120			if n, ok := typecheck.Target.Decls[i].(*ir.Func); ok {121				enqueueFunc(n)122			}123		}124		numDecls = len(typecheck.Target.Decls)125		compileFunctions()126		reflectdata.WriteRuntimeTypes()127		if numDecls == len(typecheck.Target.Decls) {128			break129		}130	}131	// Dump extra globals.132	dumpglobls(typecheck.Target.Externs[numExterns:])133	if reflectdata.ZeroSize > 0 {134		zero := base.PkgLinksym("go.map", "zero", obj.ABI0)135		objw.Global(zero, int32(reflectdata.ZeroSize), obj.DUPOK|obj.RODATA)136		zero.Set(obj.AttrStatic, true)137	}138	staticdata.WriteFuncSyms()139	addGCLocals()140	if numExports != len(typecheck.Target.Exports) {141		base.Fatalf("Target.Exports changed after compile functions loop")142	}143	newNumPTabs := reflectdata.CountPTabs()144	if newNumPTabs != numPTabs {145		base.Fatalf("ptabs changed after compile functions loop")146	}147}148func dumpLinkerObj(bout *bio.Writer) {149	printObjHeader(bout)150	if len(typecheck.Target.CgoPragmas) != 0 {151		// write empty export section; must be before cgo section152		fmt.Fprintf(bout, "\n$$\n\n$$\n\n")153		fmt.Fprintf(bout, "\n$$  // cgo\n")154		if err := json.NewEncoder(bout).Encode(typecheck.Target.CgoPragmas); err != nil {155			base.Fatalf("serializing pragcgobuf: %v", err)156		}157		fmt.Fprintf(bout, "\n$$\n\n")158	}159	fmt.Fprintf(bout, "\n!\n")160	obj.WriteObjFile(base.Ctxt, bout)161}162func dumpGlobal(n *ir.Name) {163	if n.Type() == nil {164		base.Fatalf("external %v nil type\n", n)165	}166	if n.Class == ir.PFUNC {167		return168	}169	if n.Sym().Pkg != types.LocalPkg {170		return171	}172	types.CalcSize(n.Type())173	ggloblnod(n)174	base.Ctxt.DwarfGlobal(base.Ctxt.Pkgpath, types.TypeSymName(n.Type()), n.Linksym())175}176func dumpGlobalConst(n ir.Node) {177	// only export typed constants178	t := n.Type()179	if t == nil {180		return181	}182	if n.Sym().Pkg != types.LocalPkg {183		return184	}185	// only export integer constants for now186	if !t.IsInteger() {187		return188	}189	v := n.Val()190	if t.IsUntyped() {191		// Export untyped integers as int (if they fit).192		t = types.Types[types.TINT]193		if ir.ConstOverflow(v, t) {194			return195		}196	} else {197		// If the type of the constant is an instantiated generic, we need to emit198		// that type so the linker knows about it. See issue 51245.199		_ = reflectdata.TypeLinksym(t)200	}201	base.Ctxt.DwarfIntConst(base.Ctxt.Pkgpath, n.Sym().Name, types.TypeSymName(t), ir.IntVal(t, v))202}203func dumpglobls(externs []ir.Node) {204	// add globals205	for _, n := range externs {206		switch n.Op() {207		case ir.ONAME:208			dumpGlobal(n.(*ir.Name))209		case ir.OLITERAL:210			dumpGlobalConst(n)211		}212	}213}214// addGCLocals adds gcargs, gclocals, gcregs, and stack object symbols to Ctxt.Data.215//216// This is done during the sequential phase after compilation, since217// global symbols can't be declared during parallel compilation.218func addGCLocals() {219	for _, s := range base.Ctxt.Text {220		fn := s.Func()221		if fn == nil {222			continue223		}224		for _, gcsym := range []*obj.LSym{fn.GCArgs, fn.GCLocals} {225			if gcsym != nil && !gcsym.OnList() {226				objw.Global(gcsym, int32(len(gcsym.P)), obj.RODATA|obj.DUPOK)227			}228		}229		if x := fn.StackObjects; x != nil {230			objw.Global(x, int32(len(x.P)), obj.RODATA)231			x.Set(obj.AttrStatic, true)232		}233		if x := fn.OpenCodedDeferInfo; x != nil {234			objw.Global(x, int32(len(x.P)), obj.RODATA|obj.DUPOK)235		}236		if x := fn.ArgInfo; x != nil {237			objw.Global(x, int32(len(x.P)), obj.RODATA|obj.DUPOK)238			x.Set(obj.AttrStatic, true)239		}240		if x := fn.ArgLiveInfo; x != nil {241			objw.Global(x, int32(len(x.P)), obj.RODATA|obj.DUPOK)242			x.Set(obj.AttrStatic, true)243		}244		if x := fn.WrapInfo; x != nil && !x.OnList() {245			objw.Global(x, int32(len(x.P)), obj.RODATA|obj.DUPOK)246			x.Set(obj.AttrStatic, true)247		}248	}249}250func ggloblnod(nam *ir.Name) {251	s := nam.Linksym()252	s.Gotype = reflectdata.TypeLinksym(nam.Type())253	flags := 0254	if nam.Readonly() {255		flags = obj.RODATA256	}257	if nam.Type() != nil && !nam.Type().HasPointers() {258		flags |= obj.NOPTR259	}260	base.Ctxt.Globl(s, nam.Type().Size(), flags)261	if nam.LibfuzzerExtraCounter() {262		s.Type = objabi.SLIBFUZZER_EXTRA_COUNTER263	}264	if nam.Sym().Linkname != "" {265		// Make sure linkname'd symbol is non-package. When a symbol is266		// both imported and linkname'd, s.Pkg may not set to "_" in267		// types.Sym.Linksym because LSym already exists. Set it here.268		s.Pkg = "_"269	}270}271func dumpembeds() {272	for _, v := range typecheck.Target.Embeds {273		staticdata.WriteEmbed(v)274	}275}276func addsignats(dcls []ir.Node) {277	// copy types from dcl list to signatset278	for _, n := range dcls {279		if n.Op() == ir.OTYPE {280			reflectdata.NeedRuntimeType(n.Type())281		}282	}283}...

typecheck

Using AI Code Generation

1import java.io.*;2import java.util.*;3import java.util.regex.*;4import java.text.*;5import java.math.*;6import java.awt.geom.*;7{8    public static void main(String[] args)9    {10        {11            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));12            String line;13            while ((line = in.readLine()) != null)14            {15                String[] tokens = line.split(" ");16                int n = Integer.parseInt(tokens[0]);17                int m = Integer.parseInt(tokens[1]);18                if (n == 0 && m == 0)19                    break;20                int[] a = new int[n];21                int[] b = new int[m];22                int[] c = new int[n + m];23                for (int i = 0; i < n; i++)24                    a[i] = Integer.parseInt(in.readLine());25                for (int i = 0; i < m; i++)26                    b[i] = Integer.parseInt(in.readLine());27                int i = 0, j = 0, k = 0;28                while (i < n && j < m)29                {30                    if (a[i] < b[j])31                        c[k++] = a[i++];32                        c[k++] = b[j++];33                }34                while (i < n)35                    c[k++] = a[i++];36                while (j < m)37                    c[k++] = b[j++];38                for (int l = 0; l < n + m; l++)39                    System.out.println(c[l]);40                System.out.println();41            }42        }43        catch (Exception e)44        {45            e.printStackTrace();46        }47    }48}49import java.io.*;50import java.util.*;51import java.util.regex.*;52import java.text.*;53import java.math.*;54import java.awt.geom.*;55{56    public static void main(String[] args)57    {58        {59            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));60            String line;61            while ((line = in.readLine()) != null)62            {63                String[] tokens = line.split(" ");64                int n = Integer.parseInt(tokens[0]);65                int m = Integer.parseInt(tokens[1]);66                if (n == 0 && m == 0)67                    break;68                int[] a = new int[n];69                int[] b = new int[m];

typecheck

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Scan(&a, &b)4    fmt.Println(a + b)5}6import "fmt"7func main() {8    fmt.Scan(&a, &b)9    fmt.Println(a - b)10}11import "fmt"12func main() {13    fmt.Scan(&a, &b)14    fmt.Println(a * b)15}16import "fmt"17func main() {18    fmt.Scan(&a, &b)19    fmt.Println(a / b)20}21import "fmt"22func main() {23    fmt.Scan(&a, &b)24    fmt.Println(a % b)25}26import "fmt"27func main() {28    fmt.Scan(&a, &b)29    fmt.Println(a == b)30}31import "fmt"32func main() {33    fmt.Scan(&a, &b)34    fmt.Println(a != b)35}36import "fmt"37func main() {38    fmt.Scan(&a, &b)39    fmt.Println(a > b)40}41import "fmt"42func main() {43    fmt.Scan(&a, &b)44    fmt.Println(a < b)45}

typecheck

Using AI Code Generation

1import (2func main() {3    f, err := parser.ParseFile(fset, "2.go", nil, parser.ParseComments)4    if err != nil {5        fmt.Println(err)6    }7    conf := types.Config{Importer: importer.Default()}8    info := &types.Info{9        Types: make(map[ast.Expr]types.TypeAndValue),10        Defs:  make(map[*ast.Ident]types.Object),11    }12    _, err = conf.Check("cmd/compile/internal/gc", fset, []*ast.File{f}, info)13    if err != nil {14        fmt.Println(err)15    }16}17import (18func main() {19    f, err := parser.ParseFile(fset, "2.go", nil, parser.ParseComments)20    if err != nil {21        fmt.Println(err)22    }23    conf := types.Config{Importer: importer.Default()}24    info := &types.Info{25        Types: make(map[ast.Expr]types.TypeAndValue),26        Defs:  make(map[*ast.Ident]types.Object),27    }28    _, err = conf.Check("cmd/compile/internal/gc", fset, []*ast.File{f}, info)29    if err != nil {30        fmt.Println(err)31    }32}33import (34func main() {35    f, err := parser.ParseFile(fset, "2.go", nil, parser.ParseComments)36    if err != nil {37        fmt.Println(err)38    }39    conf := types.Config{Importer: importer.Default()}40    info := &types.Info{41        Types: make(map[ast.Expr]types.TypeAndValue),42        Defs:  make(map[*ast.Ident]types.Object),43    }

typecheck

Using AI Code Generation

1import "fmt"2type Point struct {3}4func (p Point) typecheck() {5    fmt.Println("type of p is ", p)6}7func main() {8    p := Point{1, 2}9    p.typecheck()10}11type of p is  {1 2}

typecheck

Using AI Code Generation

1import "fmt"2type compiler interface {3    typecheck() bool4}5func main() {6    c = new(Go)7    fmt.Println(c.typecheck())8}9type Go struct {10}11func (g *Go) typecheck() bool {12    fmt.Println("typecheck for Go")13}14import "fmt"15type compiler interface {16    typecheck() bool17}18func main() {19    c = new(Go)20    fmt.Println(c.typecheck())21}22type Go struct {23}24func (g *Go) typecheck() bool {25    fmt.Println("typecheck for Go")26}27import "fmt"28type compiler interface {29    typecheck() bool30}31func main() {32    c = new(Go)33    fmt.Println(c.typecheck())34}35type Go struct {36}37func (g *Go) typecheck() bool {38    fmt.Println("typecheck for Go")39}40import "fmt"41type compiler interface {42    typecheck() bool43}44func main() {45    c = new(Go)46    fmt.Println(c.typecheck())47}48type Go struct {49}50func (g *Go) typecheck() bool {51    fmt.Println("typecheck for Go")52}53import "fmt"54type compiler interface {55    typecheck() bool56}57func main() {58    c = new(Go)59    fmt.Println(c.typecheck())60}61type Go struct {62}63func (g *Go) typecheck() bool {64    fmt.Println("typecheck for Go")65}66import "fmt"67type compiler interface {68    typecheck() bool69}70func main() {71    c = new(Go)72    fmt.Println(c.typecheck())73}74type Go struct {75}

typecheck

Using AI Code Generation

1import "fmt"2type compiler struct {3}4func (c compiler) typecheck() {5fmt.Println("typecheck method")6}7func main() {8c := compiler{}9c.typecheck()10}

typecheck

Using AI Code Generation

1import (2func main() {3	if a < b {4		fmt.Println("a is smaller")5	}6}7import (8func main() {9	if a > b {10		fmt.Println("a is greater")11	}12}

typecheck

Using AI Code Generation

1import "fmt"2func main() {3   fmt.Println(x)4}5The above code is not giving any error. But if we comment the import fmt statement then it will give an error:6func main() {7   fmt.Println(x)8}9import "fmt"10func main() {11   fmt.Println(x)12   fmt.Println(y)13}14import "fmt"15func main() {16   fmt.Println(x)17   fmt.Println(y)18}19import "fmt"20func main() {21   fmt.Println(x)22}23import "fmt"24func main() {25   fmt.Println(x

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