check_no_return.c

   1 /*
   2  * smatch/check_no_return.c
   3  *
   4  * Copyright (C) 2010 Dan Carpenter.
   5  *
   6  * Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #include "smatch.h"
  11
  12 static int my_id;
  13 static int returned;
  14
  15 static void match_return(struct expression *ret_value)
  16 {
  17         if (is_reachable())
  18                 returned = 1;
  19 }
  20
  21 static int function_is_static()
  22 {
  23         if (cur_func_sym->ctype.modifiers & MOD_STATIC)
  24                 return 1;
  25         return 0;
  26 }
  27
  28 static void match_func_end(struct symbol *sym)
  29 {
  30         if (!function_is_static() && !is_reachable() && !returned)
  31                 sm_info("info: add to no_return_funcs");
  32         returned = 0;
  33 }
  34
  35 void check_no_return(int id)
  36 {
  37         if (!option_info)
  38                 return;
  39         my_id = id;
  40         add_hook(&match_return, RETURN_HOOK);
  41         add_hook(&match_func_end, END_FUNC_HOOK);
  42 }