===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/midicat/midicat.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -c -r1.1 -r1.2
*** src/usr.bin/midicat/midicat.c	2018/11/30 07:08:24	1.1
--- src/usr.bin/midicat/midicat.c	2019/06/28 13:35:02	1.2
***************
*** 98,104 ****
  			ifd = STDIN_FILENO;
  		else {
  			ifd = open(ifile, O_RDONLY, 0);
! 			if (ifd < 0) {
  				perror(ifile);
  				return 1;
  			}
--- 98,104 ----
  			ifd = STDIN_FILENO;
  		else {
  			ifd = open(ifile, O_RDONLY, 0);
! 			if (ifd == -1) {
  				perror(ifile);
  				return 1;
  			}
***************
*** 108,114 ****
  			ofd = STDOUT_FILENO;
  		else {
  			ofd = open(ofile, O_WRONLY | O_CREAT | O_TRUNC, 0666);
! 			if (ofd < 0) {
  				perror(ofile);
  				return 1;
  			}
--- 108,114 ----
  			ofd = STDOUT_FILENO;
  		else {
  			ofd = open(ofile, O_WRONLY | O_CREAT | O_TRUNC, 0666);
! 			if (ofd == -1) {
  				perror(ofile);
  				return 1;
  			}
***************
*** 141,147 ****
  		}
  	}
  
! 	if (pledge("stdio", NULL) < 0)
  		err(1, "pledge");
  
  	/* transfer until end-of-file or error */
--- 141,147 ----
  		}
  	}
  
! 	if (pledge("stdio", NULL) == -1)
  		err(1, "pledge");
  
  	/* transfer until end-of-file or error */
***************
*** 150,156 ****
  			len = read(ifd, buf, sizeof(buf));
  			if (len == 0)
  				break;
! 			if (len < 0) {
  				perror("stdin");
  				break;
  			}
--- 150,156 ----
  			len = read(ifd, buf, sizeof(buf));
  			if (len == 0)
  				break;
! 			if (len == -1) {
  				perror("stdin");
  				break;
  			}