1 /* 2 * Copyright (C) 2013 Oracle. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt 16 */ 17 18 /* 19 * struct foo { char buf[10]; }; 20 * 21 * struct foo *p = something(); 22 * if (p->buf) { ... 23 * 24 */ 25 26 #include "smatch.h" 27 28 static int my_id; 29 30 static void match_condition(struct expression *expr) 31 { 32 struct symbol *type; 33 char *str; 34 35 if (expr->type != EXPR_DEREF) 36 return; 37 type = get_type(expr); 38 if (!type || type->type != SYM_ARRAY) 39 return; 40 if (get_macro_name(expr->pos)) 41 return; 42 43 str = expr_to_str(expr); 44 sm_warning("this array is probably non-NULL. '%s'", str); 45 free_string(str); 46 } 47 48 void check_array_condition(int id) 49 { 50 my_id = id; 51 add_hook(&match_condition, CONDITION_HOOK); 52 } 53