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 } 48