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
28static int my_id;
29
30static 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
48void check_array_condition(int id)
49{
50	my_id = id;
51	add_hook(&match_condition, CONDITION_HOOK);
52}
53