Fix #18: Segmentation fault due to a pointer pointing to already freed data.

gds-utils/gds-parser.c

@@ -690,6 +690,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 		}
 		rec_type = gds_convert_unsigend_int16(workbuff);
 
+
 		/* if begin: Allocate structures */
 		switch (rec_type) {
 		case BGNLIB:
@@ -865,7 +866,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 		case STRNAME:
 			break;
 		default:
-			GDS_WARN("Unhandled Record: %04x, len: %u", (unsigned int)rec_type, (unsigned int)rec_data_length);
+			GDS_INF("Unhandled Record: %04x, len: %u\n", (unsigned int)rec_type, (unsigned int)rec_data_length);
 			break;
 		} /* switch(rec_type) */
 

gds-utils/gds-tree-checker.c

@@ -184,6 +184,7 @@ int gds_tree_check_reference_loops(struct gds_library *lib)
 			if (res == 0)
 				fprintf(stderr, "Visited cell list should be empty. This is a bug. Please report this.\n");
 			g_list_free(visited_cells);
+			visited_cells = NULL;
 		}
 
 		if (res < 0) {