dup can give a negative value
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						 Tatsuya Kinoshita
						Tatsuya Kinoshita
					
				
			
			
				
	
			
			
			
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							| @@ -123,6 +123,7 @@ static int | ||||
| ftp_login(FTP ftp) | ||||
| { | ||||
|     int sock, status; | ||||
|     int sock_wf; | ||||
|  | ||||
|     sock = openSocket(ftp->host, "ftp", 21); | ||||
|     if (sock < 0) | ||||
| @@ -169,7 +170,10 @@ ftp_login(FTP ftp) | ||||
| 	} | ||||
|     } | ||||
|     ftp->rf = newInputStream(sock); | ||||
|     ftp->wf = fdopen(dup(sock), "wb"); | ||||
|     if ((sock_wf = dup(sock)) >= 0 ) | ||||
| 	    ftp->wf = fdopen(sock_wf, "wb"); | ||||
|     else | ||||
| 	    goto open_err; | ||||
|     if (!ftp->rf || !ftp->wf) | ||||
| 	goto open_err; | ||||
|     IStype(ftp->rf) |= IST_UNCLOSE; | ||||
|   | ||||
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