518   ssize_t bytes_read = -1;  in Read()  local
520     bytes_read = llvm::sys::RetryAfterSignal(-1, ::read, m_descriptor, buf, num_bytes);  in Read()
521     if (bytes_read == -1) {  in Read()
525       num_bytes = bytes_read;  in Read()
527     bytes_read = ::fread(buf, 1, num_bytes, m_stream);  in Read()
529     if (bytes_read == 0) {  in Read()
536       num_bytes = bytes_read;  in Read()
642     ssize_t bytes_read =  in Read()  local
644     if (bytes_read < 0) {  in Read()
648       offset += bytes_read;  in Read()
649       num_bytes = bytes_read;  in Read()