513   ssize_t bytes_read = -1;  in Read()  local
515     bytes_read = llvm::sys::RetryAfterSignal(-1, ::read, m_descriptor, buf, num_bytes);  in Read()
516     if (bytes_read == -1) {  in Read()
520       num_bytes = bytes_read;  in Read()
522     bytes_read = ::fread(buf, 1, num_bytes, m_stream);  in Read()
524     if (bytes_read == 0) {  in Read()
531       num_bytes = bytes_read;  in Read()
637     ssize_t bytes_read =  in Read()  local
639     if (bytes_read < 0) {  in Read()
643       offset += bytes_read;  in Read()
644       num_bytes = bytes_read;  in Read()