var startLine = -1
                var startColumn = -1
                var endLine = -1
                var endColumn = -1

                var i = offset
                var line = 1
                var column = 1
                while (i < text.length) {
                    if (i == realStartIndex) {
                        startLine = line
                        startColumn = column

	// at the end of a line.
	startLine := !first
	var c byte
	for r.err == nil && !r.eof {
		c = r.readByteNoBuf()
	Reswitch:
		switch c {
		default:
			startLine = false

		case '\n':
			startLine = true

		case ' ', '\t':
			// leave startLine alone

		case '"':
			startLine = false
			for r.err == nil {
				if r.eof {
					r.syntaxError()

type ParseError struct {
	StartLine int   // Line where the record starts
	Line      int   // Line where the error occurred
	Column    int   // Column (1-based byte index) where the error occurred
	Err       error // The actual error
}

func (e *ParseError) Error() string {
	if e.Err == ErrFieldCount {
		return fmt.Sprintf("record on line %d: %v", e.Line, e.Err)
	}
	if e.StartLine != e.Line {

				name = name[len(namePrefix):]
			}
			if !stringslite.HasPrefix(name, "tiu") {
				t.Errorf("tiuTest+%#x: unexpected function %s", pc-pc1, name)
			}

			start := int(sf.startLine) - tiuStart
			if start != wantStart[name] {
				t.Errorf("tiuTest+%#x: want startLine %d, got %d", pc-pc1, wantStart[name], start)
			}
			if sf.funcID != abi.FuncIDNormal {
				t.Errorf("tiuTest+%#x: bad funcID %v", pc-pc1, sf.funcID)
			}

	return file, int(line32)
}

// startLine returns the starting line number of the function. i.e., the line
// number of the func keyword.
func (f *Func) startLine() int32 {
	fn := f.raw()
	if fn.isInlined() { // inlined version
		fi := (*funcinl)(unsafe.Pointer(fn))
		return fi.startLine
	}
	return fn.funcInfo().startLine
}

// findmoduledatap looks up the moduledata for a PC.
//

			prevPkg = pkg
			// Put a blank line between the current and new blocks, so that the end
			// of a file acts as a blank line.
			lastLine := lastBlock(doc).Pos().EndLine
			delta := lastLine + 2 - newdoc.Blocks[0].Pos().StartLine
			for _, b := range newdoc.Blocks {
				addLines(b, delta)
			}
		}
		// Append non-empty blocks to the result document.
		for _, b := range newdoc.Blocks {
			if _, ok := b.(*md.Empty); !ok {

	_         [3]byte
	nameOff   int32 // offset into pclntab for name of called function
	parentPc  int32 // position of an instruction whose source position is the call site (offset from entry)
	startLine int32 // line number of start of function (func keyword/TEXT directive)
}

// An inlineUnwinder iterates over the stack of inlined calls at a PC by
// decoding the inline table. The last step of iteration is always the frame of

		ni.File = filepath.Clean(fname)
	}
	if o.OrigFnNames {
		ni.OrigName = line.Function.SystemName
	}
	if o.ObjNames || (ni.Name == "" && ni.OrigName == "") {
		ni.Objfile = objfile
		ni.StartLine = int(line.Function.StartLine)
	}
	return ni
}

type tags struct {
	t    []*Tag
	flat bool
}

func (t tags) Len() int      { return len(t.t) }

	if start == 0 {
		if fns[0].Info.StartLine != 0 {
			start = fns[0].Info.StartLine
		} else {
			start = fns[0].Info.Lineno - margin
		}
	} else {
		start -= margin
	}
	if end == 0 {
		end = fns[0].Info.Lineno
	}
	end += margin
	for _, n := range fns {
		lineno := n.Info.Lineno
		nodeStart := n.Info.StartLine
		if nodeStart == 0 {
			nodeStart = lineno - margin
		}

	Column   int64

	functionIDX uint64
}

// Function corresponds to Profile.Function
type Function struct {
	ID         uint64
	Name       string
	SystemName string
	Filename   string
	StartLine  int64

	nameX       int64
	systemNameX int64
	filenameX   int64
}

// Parse parses a profile and checks for its validity. The input
// may be a gzip-compressed encoded protobuf or one of many legacy