getPdbPath

    pub fn getPdbPath(self: *Coff) !?[]const u8 {
        assert(self.is_image);

        const data_dirs = self.getDataDirectories();
        if (@backingInt(IMAGE.DIRECTORY_ENTRY.DEBUG) >= data_dirs.len) return null;

        const debug_dir = data_dirs[@backingInt(IMAGE.DIRECTORY_ENTRY.DEBUG)];
        var reader: std.Io.Reader = .fixed(self.data);

        if (self.is_loaded) {
            reader.seek = debug_dir.virtual_address;
        } else {
            // Find what section the debug_dir is in, in order to convert the RVA to a file offset
            for (self.getSectionHeaders()) |*sect| {
                if (debug_dir.virtual_address >= sect.virtual_address and debug_dir.virtual_address < sect.virtual_address + sect.virtual_size) {
                    reader.seek = sect.pointer_to_raw_data + (debug_dir.virtual_address - sect.virtual_address);
                    break;
                }
            } else return error.InvalidDebugDirectory;
        }

        // Find the correct DebugDirectoryEntry, and where its data is stored.
        // It can be in any section.
        const debug_dir_entry_count = debug_dir.size / @sizeOf(DebugDirectoryEntry);
        var i: u32 = 0;
        while (i < debug_dir_entry_count) : (i += 1) {
            const debug_dir_entry = try reader.takeStruct(DebugDirectoryEntry, .little);
            if (debug_dir_entry.type == .CODEVIEW) {
                const dir_offset = if (self.is_loaded) debug_dir_entry.address_of_raw_data else debug_dir_entry.pointer_to_raw_data;
                reader.seek = dir_offset;
                break;
            }
        } else return null;

        const code_view_signature = try reader.takeArray(4);
        // 'RSDS' indicates PDB70 format, used by lld.
        if (!mem.eql(u8, code_view_signature, "RSDS"))
            return error.InvalidPEMagic;
        try reader.readSliceAll(self.guid[0..]);
        self.age = try reader.takeInt(u32, .little);

        // Finally read the null-terminated string.
        const start = reader.seek;
        const len = std.mem.findScalar(u8, self.data[start..], 0) orelse return null;
        return self.data[start .. start + len];
    }