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 } 51