824 diff_2_files (struct comparison *cmp)  in diff_2_files()  argument
839   if (read_files (cmp->file, files_can_be_treated_as_binary))  in diff_2_files()
842       if (cmp->file[0].stat.st_size != cmp->file[1].stat.st_size  in diff_2_files()
843 	  && (cmp->file[0].desc < 0 || S_ISREG (cmp->file[0].stat.st_mode))  in diff_2_files()
844 	  && (cmp->file[1].desc < 0 || S_ISREG (cmp->file[1].stat.st_mode)))  in diff_2_files()
848       else if (cmp->file[0].desc == cmp->file[1].desc)  in diff_2_files()
858 			buffer_lcm (STAT_BLOCKSIZE (cmp->file[0].stat),  in diff_2_files()
859 				    STAT_BLOCKSIZE (cmp->file[1].stat),  in diff_2_files()
863 	    cmp->file[f].buffer = xrealloc (cmp->file[f].buffer, buffer_size);  in diff_2_files()
865 	  for (;; cmp->file[0].buffered = cmp->file[1].buffered = 0)  in diff_2_files()
869 		if (0 <= cmp->file[f].desc)  in diff_2_files()
870 		  file_block_read (&cmp->file[f],  in diff_2_files()
871 				   buffer_size - cmp->file[f].buffered);  in diff_2_files()
874 	      if (cmp->file[0].buffered != cmp->file[1].buffered  in diff_2_files()
875 		  || memcmp (cmp->file[0].buffer,  in diff_2_files()
876 			     cmp->file[1].buffer,  in diff_2_files()
877 			     cmp->file[0].buffered))  in diff_2_files()
884 	      if (cmp->file[0].buffered != buffer_size)  in diff_2_files()
892       changes = briefly_report (changes, cmp->file);  in diff_2_files()
901       size_t s = cmp->file[0].buffered_lines + cmp->file[1].buffered_lines + 4;  in diff_2_files()
903       cmp->file[0].changed = flag_space + 1;  in diff_2_files()
904       cmp->file[1].changed = flag_space + cmp->file[0].buffered_lines + 3;  in diff_2_files()
910       discard_confusing_lines (cmp->file);  in diff_2_files()
915       xvec = cmp->file[0].undiscarded;  in diff_2_files()
916       yvec = cmp->file[1].undiscarded;  in diff_2_files()
917       diags = (cmp->file[0].nondiscarded_lines  in diff_2_files()
918 	       + cmp->file[1].nondiscarded_lines + 3);  in diff_2_files()
921       fdiag += cmp->file[1].nondiscarded_lines + 1;  in diff_2_files()
922       bdiag += cmp->file[1].nondiscarded_lines + 1;  in diff_2_files()
931       files[0] = cmp->file[0];  in diff_2_files()
932       files[1] = cmp->file[1];  in diff_2_files()
934       compareseq (0, cmp->file[0].nondiscarded_lines,  in diff_2_files()
935 		  0, cmp->file[1].nondiscarded_lines, minimal);  in diff_2_files()
937       free (fdiag - (cmp->file[1].nondiscarded_lines + 1));  in diff_2_files()
942       shift_boundaries (cmp->file);  in diff_2_files()
948 	script = build_reverse_script (cmp->file);  in diff_2_files()
950 	script = build_script (cmp->file);  in diff_2_files()
985 	changes = briefly_report (changes, cmp->file);  in diff_2_files()
992 	      setup_output (file_label[0] ? file_label[0] : cmp->file[0].name,  in diff_2_files()
993 			    file_label[1] ? file_label[1] : cmp->file[1].name,  in diff_2_files()
994 			    cmp->parent != 0);  in diff_2_files()
1038       free (cmp->file[0].undiscarded);  in diff_2_files()
1044 	  free (cmp->file[f].equivs);  in diff_2_files()
1045 	  free (cmp->file[f].linbuf + cmp->file[f].linbuf_base);  in diff_2_files()
1056 	  if (cmp->file[f].missing_newline)  in diff_2_files()
1059 		     file_label[f] ? file_label[f] : cmp->file[f].name,  in diff_2_files()
1065   if (cmp->file[0].buffer != cmp->file[1].buffer)  in diff_2_files()
1066     free (cmp->file[0].buffer);  in diff_2_files()
1067   free (cmp->file[1].buffer);  in diff_2_files()