138 	regfile = NULL;  in main()
139 	listfile = NULL;  in main()
171 			if ((listfile = fopen(optarg, "w")) == NULL) {  in main()
173 				stop(NULL, EX_CANTCREAT);  in main()
187 			if ((ofile = fopen(optarg, "w")) == NULL) {  in main()
189 				stop(NULL, EX_CANTCREAT);  in main()
195 			if ((regdiagfile = fopen(optarg, "w")) == NULL) {  in main()
197 				stop(NULL, EX_CANTCREAT);  in main()
202 			if ((regfile = fopen(optarg, "w")) == NULL) {  in main()
204 				stop(NULL, EX_CANTCREAT);  in main()
220 				     include_dir != NULL;  in main()
232 				if (include_dir == NULL) {  in main()
234 					stop(NULL, EX_OSERR);  in main()
237 				if (include_dir->directory == NULL) {  in main()
239 					stop(NULL, EX_OSERR);  in main()
262 	if (regdiagfile != NULL  in main()
263 	 && (regfile == NULL || stock_include_file == NULL)) {  in main()
275 		if (SLIST_FIRST(&scope_stack) == NULL  in main()
294 		if (ofile != NULL)  in main()
296 		if (regfile != NULL)  in main()
298 		if (listfile != NULL)  in main()
302 	stop(NULL, 0);  in main()
325 	     cur_instr != NULL;  in back_patch()
327 		if (cur_instr->patch_label != NULL) {  in back_patch()
367 	     cur_instr != NULL;  in output_code()
387 	if (patch_arg_list == NULL)  in output_code()
398 	     cur_node != NULL;  in output_code()
426 	     cur_patch != NULL;  in output_code()
444 	     cs != NULL;  in output_code()
475 	while (cur_scope != NULL) {  in dump_scope()
502 	if (new_patch == NULL)  in emit_patch()
538 	if ((ifile = fopen(ifilename, "r")) == NULL) {  in output_listing()
540 		stop(NULL, EX_DATAERR);  in output_listing()
547 	    cur_func != NULL;  in output_listing()
551 	func_values = NULL;  in output_listing()
555 		if (func_values == NULL)  in output_listing()
568 		     cur_func != NULL && SLIST_NEXT(cur_func, links) != NULL;  in output_listing()
599 	     cur_instr != NULL;  in output_listing()
642 	while(fgets(buf, sizeof(buf), ifile) != NULL)  in output_listing()
656 	while (cur_patch != NULL && start_instr == cur_patch->begin) {  in check_patch()
663 			     skip > 0 && cur_patch != NULL;  in check_patch()
690 	if (string != NULL) {  in stop()
692 		if (yyfilename != NULL) {  in stop()
699 	if (ofile != NULL) {  in stop()
708 	if (regfile != NULL) {  in stop()
717 	if (listfile != NULL) {  in stop()
738 	if (new_instr == NULL)  in seq_alloc()
752 	if (new_cs == NULL)  in cs_alloc()
766 	if (new_scope == NULL)  in scope_alloc()
771 	if (SLIST_FIRST(&scope_stack) != NULL) {  in scope_alloc()
795 	while (cur_scope != NULL) {  in process_scope()