1 /*
2 * Copyright (C) 2010 Dan Carpenter.
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 #include "smatch.h"
19
20 static int my_id;
21 static int returned;
22
23 static void match_return(struct expression *ret_value)
24 {
25 if (__inline_fn)
26 return;
27 if (is_reachable())
28 returned = 1;
29 }
30
31 static void match_func_end(struct symbol *sym)
32 {
33 if (__inline_fn)
34 return;
35 if (!is_reachable() && !returned)
36 sm_info("info: add to no_return_funcs");
37 returned = 0;
38 }
39
40 void check_no_return(int id)
41 {
42 if (!option_info)
43 return;
44 my_id = id;
45 add_hook(&match_return, RETURN_HOOK);
46 add_hook(&match_func_end, END_FUNC_HOOK);
47 }
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1 /*
2 * Copyright (C) 2010 Dan Carpenter.
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 #include "smatch.h"
19 #include "smatch_slist.h"
20
21 static int my_id;
22 static int returned;
23
24 static void match_return(struct expression *ret_value)
25 {
26 if (__inline_fn)
27 return;
28 if (is_reachable())
29 returned = 1;
30 }
31
32 static void match_func_end(struct symbol *sym)
33 {
34 if (__inline_fn)
35 return;
36 if (out_of_memory() || taking_too_long())
37 return;
38 if (!is_reachable() && !returned)
39 sm_info("info: add to no_return_funcs");
40 returned = 0;
41 }
42
43 void check_no_return(int id)
44 {
45 if (!option_info)
46 return;
47 my_id = id;
48 add_hook(&match_return, RETURN_HOOK);
49 add_hook(&match_func_end, END_FUNC_HOOK);
50 }
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