ck_fopen          595 src/sdiff.c          left = ck_fopen (lname, "r");
ck_fopen          597 src/sdiff.c          right = ck_fopen (rname, "r");
ck_fopen          598 src/sdiff.c          out = ck_fopen (output, "w");
ck_fopen         1073 src/sdiff.c    	      tmp = ck_fopen (tmpname, "r");