// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package slicereader

import (
	"encoding/binary"
	"fmt"
	"io"
	"unsafe"
)

// This file contains the helper "SliceReader", a utility for
// reading values from a byte slice that may or may not be backed
// by a read-only mmap'd region.

type Reader struct {
	b        []byte

}

// Reader is a helper for reading a string table previously
// serialized by a Writer.Write call.
type Reader struct {
	r    *slicereader.Reader
	strs []string
}

// NewReader creates a stringtab.Reader to read the contents
// of a string table from 'r'.
func NewReader(r *slicereader.Reader) *Reader {
	str := &Reader{
		r: r,
	}
	return str
}

// is turned on.

import (
	"encoding/binary"
	"fmt"
	"internal/coverage"
	"internal/coverage/slicereader"
	"internal/coverage/stringtab"
	"io"
	"os"
)

// See comments in the encodecovmeta package for details on the format.

type CoverageMetaDataDecoder struct {
	r      *slicereader.Reader
	hdr    coverage.MetaSymbolHeader
	strtab *stringtab.Reader
	tmp    []byte
	debug  bool
}

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package slicereader

import (
	"encoding/binary"
	"io"
	"testing"
)

func TestSliceReader(t *testing.T) {
	b := []byte{}

	bt := make([]byte, 4)
	e32 := uint32(1030507)
	binary.LittleEndian.PutUint32(bt, e32)
	b = append(b, bt...)

	bt = make([]byte, 8)

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package decodecounter

import (
	"encoding/binary"
	"fmt"
	"internal/coverage"
	"internal/coverage/slicereader"
	"internal/coverage/stringtab"
	"io"
	"os"
	"strconv"
	"unsafe"
)

// This file contains helpers for reading counter data files created
// during the executions of a coverage-instrumented binary.

// separate self-contained meta-data section for each Go package.

import (
	"bufio"
	"crypto/md5"
	"encoding/binary"
	"fmt"
	"internal/coverage"
	"internal/coverage/slicereader"
	"internal/coverage/stringtab"
	"io"
	"os"
)

// CoverageMetaFileReader provides state and methods for reading
// a meta-data file from a code coverage run.
type CoverageMetaFileReader struct {

	internal/coverage, internal/coverage/uleb128
	< internal/coverage/cmerge,
	  internal/coverage/pods,
	  internal/coverage/slicereader,
	  internal/coverage/slicewriter;

	internal/coverage/slicereader, internal/coverage/slicewriter
	< internal/coverage/stringtab
	< internal/coverage/decodecounter, internal/coverage/decodemeta,

	hdr.Data = uintptr(unsafe.Pointer(p))

	return
}

func f(hdr *reflect2.SliceHeader, p *byte) {
	hdr.Data = uintptr(unsafe.Pointer(p)) // ERROR "write barrier"
}

type SliceHeader struct {
	Data uintptr
}

func g(hdr *SliceHeader, p *byte) {
	// No write barrier for lookalike SliceHeader.
	hdr.Data = uintptr(unsafe.Pointer(p))

	return unsafe.Pointer(reflect.ValueOf(p).Elem().UnsafeAddr())
}

// (6) Conversion of a reflect.SliceHeader or reflect.StringHeader
// Data field to or from Pointer.

func fromSliceData(s []int) unsafe.Pointer { // ERROR "leaking param: s to result ~r0 level=0$"
	return unsafe.Pointer((*reflect.SliceHeader)(unsafe.Pointer(&s)).Data)
}

// are tested to be equivalent to reflect.SliceHeader and reflect.StringHeader.
package unsafeheader

import (
	"unsafe"
)

// Slice is the runtime representation of a slice.
// It cannot be used safely or portably and its representation may
// change in a later release.
//
// Unlike reflect.SliceHeader, its Data field is sufficient to guarantee the