t.Fatal("d.Reader().Next:", err)
	}
	lr, err := d.LineReader(cu)
	if err != nil {
		t.Fatal("d.LineReader:", err)
	}

	// Read entries forward.
	var line LineEntry
	var posTable []LineReaderPos
	var table []LineEntry
	for {
		posTable = append(posTable, lr.Tell())

		err := lr.Next(&line)
		if err != nil {
			if err == io.EOF {
				break
			}
			t.Fatal("lr.Next:", err)
		}

	"io"
	"path"
	"strings"
)

// A LineReader reads a sequence of [LineEntry] structures from a DWARF
// "line" section for a single compilation unit. LineEntries occur in
// order of increasing PC and each [LineEntry] gives metadata for the
// instructions from that [LineEntry]'s PC to just before the next
// [LineEntry]'s PC. The last entry will have the [LineEntry.EndSequence] field set.
type LineReader struct {
	buf buf

pkg debug/dwarf, type Field struct, Class Class
pkg debug/dwarf, type LineEntry struct
pkg debug/dwarf, type LineEntry struct, Address uint64
pkg debug/dwarf, type LineEntry struct, BasicBlock bool
pkg debug/dwarf, type LineEntry struct, Column int
pkg debug/dwarf, type LineEntry struct, Discriminator int
pkg debug/dwarf, type LineEntry struct, EndSequence bool
pkg debug/dwarf, type LineEntry struct, EpilogueBegin bool

			return nil, err
		}
		if e == nil {
			break
		}
		lr, err := dwarfData.LineReader(e)
		if err != nil {
			return nil, err
		}
		if lr == nil {
			continue
		}

		var le dwarf.LineEntry
		for {
			if err := lr.Next(&le); err != nil {
				if err == io.EOF {
					break
				}
				return nil, err
			}
			files[le.File.Name] = true
		}
	}

			continue // golang.org/issue/49372
		}
		if e.Val(dwarf.AttrStmtList) == nil {
			continue
		}
		lrdr, err := dw.LineReader(e)
		must(err)

		var le dwarf.LineEntry

		for {
			err := lrdr.Next(&le)
			if err == io.EOF {
				break
			}
			must(err)
			fl := Line{le.File.Name, le.Line}
			lines[fl] = lines[fl] || le.IsStmt
		}
	}

	if lerr != nil {
		t.Fatalf("error creating DWARF line reader: %v", err)
	}
	if lnrdr == nil {
		t.Fatalf("no line table for main.main compilation unit")
	}
	rows := []dwarf.LineEntry{}
	mainrows := 0
	var lne dwarf.LineEntry
	for {
		err := lnrdr.Next(&lne)
		if err == io.EOF {
			break
		}
		rows = append(rows, lne)
		if err != nil {
			t.Fatalf("error reading next DWARF line: %v", err)

			r := d.Reader()
			entry, err := r.SeekPC(addr)
			if err != nil {
				t.Fatal(err)
			}
			lr, err := d.LineReader(entry)
			if err != nil {
				t.Fatal(err)
			}
			var line dwarf.LineEntry
			if err := lr.SeekPC(addr, &line); err == dwarf.ErrUnknownPC {
				t.Fatalf("did not find file:line for %#x (main.main)", addr)
			} else if err != nil {
				t.Fatal(err)
			}

func (f *file) dwarfSourceLineEntry(r *dwarf.Reader, entry *dwarf.Entry, addr uint64) []driver.Frame {
	lines, err := f.dwarf.LineReader(entry)
	if err != nil {
		return nil
	}
	var lentry dwarf.LineEntry
	if err := lines.SeekPC(addr, &lentry); err != nil {
		return nil
	}

	// Try to find the function name.
	name := ""
FindName:

		{"IntType.BasicType", Field, 0},
		{"LineEntry", Type, 5},
		{"LineEntry.Address", Field, 5},
		{"LineEntry.BasicBlock", Field, 5},
		{"LineEntry.Column", Field, 5},
		{"LineEntry.Discriminator", Field, 5},
		{"LineEntry.EndSequence", Field, 5},
		{"LineEntry.EpilogueBegin", Field, 5},
		{"LineEntry.File", Field, 5},
		{"LineEntry.ISA", Field, 5},
		{"LineEntry.IsStmt", Field, 5},
		{"LineEntry.Line", Field, 5},

            args.add(keyName);
        }
        if (passphrase != null) {
            if (useLegacyGpg) {
                args.add("--no-use-agent");
            } else {
                args.add("--pinentry-mode=loopback");
            }
            args.add("--passphrase-fd");
            args.add("0");
        } else {
            if (useLegacyGpg) {
                args.add("--use-agent");
            }