222   auto src_stream = FileStream::Open(FLAGS_src_file, true, false);  in Main()  local
223   TEST_AND_RETURN_FALSE(src_stream);  in Main()
225     src_stream =  in Main()
226         ExtentStream::CreateForRead(std::move(src_stream), src_extents);  in Main()
227     TEST_AND_RETURN_FALSE(src_stream);  in Main()
232         src_stream, FLAGS_src_file, FLAGS_src_file_type, &src_deflates_bit));  in Main()
238       TEST_AND_RETURN_FALSE(FindDeflateSubBlocks(src_stream, src_deflates_byte,  in Main()
243     TEST_AND_RETURN_FALSE(FindPuffLocations(src_stream, src_deflates_bit,  in Main()
250         PuffinStream::CreateForPuff(std::move(src_stream), puffer,  in Main()
297     TEST_AND_RETURN_FALSE(src_stream->GetSize(&src_stream_size));  in Main()
311       TEST_AND_RETURN_FALSE(src_stream->Read(buffer.data(), read_size));  in Main()
320         src_stream, FLAGS_src_file, FLAGS_src_file_type, &src_deflates_bit));  in Main()
337       TEST_AND_RETURN_FALSE(FindDeflateSubBlocks(src_stream, src_deflates_byte,  in Main()
349         std::move(src_stream), std::move(dst_stream), src_deflates_bit,  in Main()
379         std::move(src_stream), std::move(dst_stream), puffdiff_delta.data(),  in Main()