mainIdx := ex.IdxFromOffset(maindie.Offset)
			childDies := ex.Children(mainIdx)
			var iEntry *dwarf.Entry
			for _, child := range childDies {
				if child.Tag == dwarf.TagVariable && child.Val(dwarf.AttrName).(string) == "i" {
					iEntry = child
					break
				}
			}
			if iEntry == nil {
				t.Fatalf("didn't find DW_TAG_variable for i in main.main")
			}

	TagTemplateTypeParameter  Tag = 0x2F
	TagTemplateValueParameter Tag = 0x30
	TagThrownType             Tag = 0x31
	TagTryDwarfBlock          Tag = 0x32
	TagVariantPart            Tag = 0x33
	TagVariable               Tag = 0x34
	TagVolatileType           Tag = 0x35
	// The following are new in DWARF 3.
	TagDwarfProcedure  Tag = 0x36
	TagRestrictType    Tag = 0x37
	TagInterfaceType   Tag = 0x38

	// Scan DWARF info for top-level TagVariable entries with AttrName __cgo__i.
	types := make([]dwarf.Type, len(names))
	r := d.Reader()
	for {
		e, err := r.Next()
		if err != nil {
			fatalf("reading DWARF entry: %s", err)
		}
		if e == nil {
			break
		}
		switch e.Tag {
		case dwarf.TagVariable:
			name, _ := e.Val(dwarf.AttrName).(string)

		{"TagTryDwarfBlock", Const, 0},
		{"TagTypeUnit", Const, 3},
		{"TagTypedef", Const, 0},
		{"TagUnionType", Const, 0},
		{"TagUnspecifiedParameters", Const, 0},
		{"TagUnspecifiedType", Const, 0},
		{"TagVariable", Const, 0},
		{"TagVariant", Const, 0},
		{"TagVariantPart", Const, 0},
		{"TagVolatileType", Const, 0},
		{"TagWithStmt", Const, 0},
		{"Type", Type, 0},
		{"TypedefType", Type, 0},